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View Full Version : Duramax diesel X-80 Re Power has begun. Forum help needed.


dmaxstore
02-13-2013, 11:45 PM
This project has been in the works for about a year now. The platform is a 2003 single prop X80 originally powered by an 8.1 big block. Custom stainless manifolds and up pipes have been fabricated. We have pulled the 8.1 and kicked this project into high gear. Help from this forum will be greatly appreciated to get this project completed. We specialize in Duramax diesel trucks but are new to the water. Input on V drive and prop selection as well as other areas will be needed. Please feel free to kick in some advice.
The new power will be provided by 2009 LMM Duramax removed from a Kodiak. The Kodiak comes equipt with a stronger block so it is a better place to start. Power from the 6.6 Duramax will be left stock for now with twin turbos in mind for the future.

http://i814.photobucket.com/albums/zz61/dmaxstorep/BOAT/IMG_5524.jpg

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/IMG_5700_zps392bb23d.jpg

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/IMG_5699_zps2748e29e.jpg

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/IMG_5672.jpg

FrankSchwab
02-14-2013, 12:01 AM
Wow, this'll be an interesting project to follow.

Prop selection - Eric Johnson from OJ Props (http://mastercraft.com/teamtalk/member.php?u=1537) would be a good guy to talk to. Click the link and send him a PM.

Goinbroke
02-14-2013, 12:14 AM
Frikking Sweet!!!!
I hope this project flys like a bird!
I want to see more D power in Marine.

hkyplyr31
02-14-2013, 01:17 AM
owning a duramax truck myself, I have thought about this quite a few times. It certainly isnt without its drawbacks, but the allure of having that much power should be able to mitigate them. I wouldn't imagine that the stock v-drive would be a good choice, the LMM will probably have almost twice the torque of the 8.1 so im not even sure if it would survive it. Torque is a much smaller factor in the acceleration of boats than in cars so you will probably want to have it geared up to convert the motor torque to prop hp, but this can also be done by changing the prop parameters - so you arent completely locked in once you chose your v-drive.

does the Kodiak LMM come with a DPF? it would be a nice to have on a lake boat to reduce the particulate matter added to the water, but it will also increase operating temperature, add some lag, and limit the maximum idling time.

typical lake boats are turned off when they are stationary whereas a diesel would be better off idling for a few min rather than being shut off and restarted, so a more robust starter would be a good idea (seeing as you should change it out for a marine one anyway) along with larger starting batteries and an upgraded alternator (marine) to charge the starting and auxiliary battery banks.

you also might want to consider a different type of fuel tank and water separator to reduce the amount of water in the fuel, this might also help reduce the amount that the fuel foams when it sloshes around if it becomes problematic.

Im sure I'll think of some more things later - but im excited to see how this progresses.

Aric'sX15
02-14-2013, 01:53 AM
No dpf! Blow some coal! Haha just kidding. Such an awesome project!

psychobilly
02-14-2013, 02:37 AM
You may want to look at what your largest wheel diameter is allowed with the shaft angle. You will probably be turning a 16" or 17" wheel with all the torque that big nasty will produce. Talk about pulling several people!

gotta_ski
02-14-2013, 06:46 AM
Your new stainless manifolds don't appear to have any place for the cooling water to enter, nor any place for the exhaust/water to mix before it is exhausted out the back. What is your plan here? I know nothing about marine diesels and very little about diesel in general other than the basic operating concept, but is this safe? It seems to me that without the exhaust being water-cooled they will get extremely hot. How do you plan to exhaust this very hot air?

This is a fascinating project though. I hope you get it all figured out. I've often wondered why the big v-drive's don't come with a diesel option.

johnlanguab
02-14-2013, 07:29 AM
I can't wait to see how this turns out!

psychobilly
02-14-2013, 07:39 AM
Your new stainless manifolds don't appear to have any place for the cooling water to enter, nor any place for the exhaust/water to mix before it is exhausted out the back. What is your plan here? I know nothing about marine diesels and very little about diesel in general other than the basic operating concept, but is this safe? It seems to me that without the exhaust being water-cooled they will get extremely hot. How do you plan to exhaust this very hot air?

This is a fascinating project though. I hope you get it all figured out. I've often wondered why the big v-drive's don't come with a diesel option.

You're correct there GS... They don't look like wet exhaust manifolds..


dmaxstore, you may want to check with these guys and see what they have or what dirrection to point you...

http://www.mesamarine.com/#Marinization%20Kits

http://www.mesamarine.com/Bowman%20Manifolds.htm#Bowman%20Manifolds


Hope this helps...

You may want to contact this motorhead buddy of mine.

http://www.kanecustomboats.com

Hope this helps. That boat has some SICK grafix:headbang::headbang::headbang:!!!

76S&S
02-14-2013, 08:48 AM
Awesome project!

Subscribed

dmaxstore
02-14-2013, 09:15 AM
Thanks for all the input. These are are liquid cooled manifolds and up pipes. The picture doesn't show the jackets. We still need to fabricate a custom water injected down pipe. We will need some help with the muffler set up though? Not sure if the gas muffler is to restrictive for our boosted diesel.
Anyone have some contact info for a good V drive shop?

willyt
02-14-2013, 09:22 AM
very interesting project - you noted that the diesel will be left stock without turbos, but in on road vehicle applications i thought the LMM had a single turbo.

The kodiak LMM looks to be rated at 620lbs of torque, which certainly isn't double what the big block put out, shoot my MCX is rated at 365 lbs.

The most important choice will be the prop and transmission gearing... since the LMM hits its max torque around 1,600 rpms i'd have to imagine a HUGE prop or a geared up transmission, with the red line at 3,250 rpms you'll need to have a plan for the top end too

Theclarks1111
02-14-2013, 09:26 AM
subscribed as well... really looking forward to seeing this one

MIskier
02-14-2013, 09:40 AM
Thanks for all the input. These are are liquid cooled manifolds and up pipes. The picture doesn't show the jackets. We still need to fabricate a custom water injected down pipe. We will need some help with the muffler set up though? Not sure if the gas muffler is to restrictive for our boosted diesel.
Anyone have some contact info for a good V drive shop?

Are you planning on adding a water jacketed turbo as well? Depending on where you are located talking to Teauge Custom Marine in Cali would be a great place to start.

dmaxstore
02-14-2013, 10:01 AM
very interesting project - you noted that the diesel will be left stock without turbos, but in on road vehicle applications i thought the LMM had a single turbo.

The kodiak LMM looks to be rated at 620lbs of torque, which certainly isn't double what the big block put out, shoot my MCX is rated at 365 lbs.

The most important choice will be the prop and transmission gearing... since the LMM hits its max torque around 1,600 rpms i'd have to imagine a HUGE prop or a geared up transmission, with the red line at 3,250 rpms you'll need to have a plan for the top end too


We will be running the LMM's factory single turbo with a possible twin turbo set up in the future. Our X80's V drive should be able to handle 450 ft lbs, however a different ratio will be needed to optimize the lower RPM. With a stock block and heads the Duramax motor is capable of producing around 650hp or 1200+ ftlbs with proper tunning and turbo's. This motor will not be tuned for max HP just max efficiency.

TayMC197
02-14-2013, 10:52 AM
We will be running the LMM's factory single turbo with a possible twin turbo set up in the future. Our X80's V drive should be able to handle 450 ft lbs, however a different ratio will be needed to optimize the lower RPM. With a stock block and heads the Duramax motor is capable of producing around 650hp or 1200+ ftlbs with proper tunning and turbo's. This motor will not be tuned for max HP just max efficiency.

I'd super charge it and ditch the turbo. You have no air circulation for the intercoolers, you can't have water going through the turbo, and you can't install the water inlets post turbo or your manifold temps will be hot enough to melt things. Super charging it will be the best option for you in this case and fairly easy to do. The heat will be to great with turbos. Now for the exhaust, just straight pipe it with standard water manifolds and zero filtration. If you leave the engine on a stock tune, the amount of black smoke and emissions is low already. Pushing a prop you won't have near the load on the motor that it would in a truck. Also the gas manifolds and exhaust won't hinder the restriction of the duramax (IMHO).

Ski-me
02-14-2013, 10:58 AM
A fellow member installed a diesel into his 190 (smaller boat) but there may be some tips in this thread. Worth reading. I think he was in Turkey so that made it even more interesting.....

http://www.mastercraft.com/teamtalk/showthread.php?t=33716&highlight=diesel

TayMC197
02-14-2013, 11:02 AM
Alright, just looked at your pictures closer and saw a few things that answered some questions. I was thinking you manifolds were exhausting the water but just internal circulation. Thats good but still think you going to run into heat problems with the up pipes unless you can find a cooling system for them as well. Then you have to have an intercooler setup. That will take up room and have zero air circulation unless you can find a heat exchanging coil setup. that will take more plumning etc.

I see the EGR is off and i'd leave that off and bypass... POS in my opinion. I'm very intrested in the project. Please keep us posted. I'm very familiar with the LMM and always looking at ways to improve performance.

dmaxstore
02-14-2013, 11:06 AM
I'd super charge it and ditch the turbo. You have no air circulation for the intercoolers, you can't have water going through the turbo, and you can't install the water inlets post turbo or your manifold temps will be hot enough to melt things. Super charging it will be the best option for you in this case and fairly easy to do. The heat will be to great with turbos. Now for the exhaust, just straight pipe it with standard water manifolds and zero filtration. If you leave the engine on a stock tune, the amount of black smoke and emissions is low already. Pushing a prop you won't have near the load on the motor that it would in a truck. Also the gas manifolds and exhaust won't hinder the restriction of the duramax (IMHO).

Water to air inter cooler will be used. They are very efficient in restricted air flow applications. We want to use a stock motor and turbo for cost effectiveness.

TayMC197
02-14-2013, 11:08 AM
http://www.banksmarine.com/

Check this out, I might just buy this and retro fit my 197

FourFourty
02-14-2013, 11:47 AM
Alright, just looked at your pictures closer and saw a few things that answered some questions. I was thinking you manifolds were exhausting the water but just internal circulation. Thats good but still think you going to run into heat problems with the up pipes unless you can find a cooling system for them as well. Then you have to have an intercooler setup. That will take up room and have zero air circulation unless you can find a heat exchanging coil setup. that will take more plumning etc.

I see the EGR is off and i'd leave that off and bypass... POS in my opinion. I'm very intrested in the project. Please keep us posted. I'm very familiar with the LMM and always looking at ways to improve performance.

I think the up pipes will be the biggest challange. The last thing you would want, is water jacketed up pipes. They would cool the exhaust, and drastically reduce turbo efficiency. A double wall pipe, and creative heat shielding, might do the trick...

The intercooler should be easy. There are tons of liquid/air heat exchangers that would work.

hkyplyr31
02-14-2013, 08:03 PM
you might be able to get away with a ceramic coated up pipe and a thermal wrap around the outside. if the pipe still gets too hot you could add a heat shield and water cool that or run a heat pipe to something metal that is exposed to the water.

psychobilly
02-14-2013, 08:21 PM
I found this in the Glen L forum and it also has the source below,


"I found the following information regarding cooling the exhaust manifolds.
Coast Guard requires: safety related
There is a distinction for high and low output engines.
In the written part as well exchange of information with reference to an turbo exhaust manifold and its cooling influence relative to engine efficiency.


A marine-specific exhaust manifold must be installed - something completely different from any other application. The
Coast Guard requires the manifold to be heat shielded so that if something flammable comes in contact with it, there's
no fire. This can be accomplished with very expensive insulation (space shuttle tile material) and heat shields. That
improves engine efficiency about 10%
compared to a water jacketed manifold because more heat is available to run the turbocharger. Turbochargers and
exhaust elbows must also be insulated or water jacketed. Again, water jacketing reduces efficiency but may present a
slightly cooler surface for decreased radiated heat to the engine room. Higher output engines absolutely REQUIRE
water jacketed exhaust system parts to absorb the thermal stresses - dry insulated manifolds crack under those
conditions. Needless to say, water jacketed parts in expensive diesels are cooled by the engine's antifreeze/coolant
mixture because sea water is too corrosive.

Source : seaskills / DieselMarinization "

Now, I recon you would be better off with wet exhaust as you already stated you are going stock standard on the motor builld as you will have more than enough power... If you don't want to burn down the house I think wet exhaust is the way to go but I ain't an expert. As for the risers, I recon they could be wrapped up.

I'm not an expert on this so my .02 would be to contact an expert and get their opinion and your options such as TayMC197 suggested http://www.banksmarine.com/ or that oufit I posted on page 1 I think it was.

I want to see it ROLL COAL!!!!!! :headbang::woohoo::headbang:

thamax
02-14-2013, 10:26 PM
PPE put a LBZ motor in a boat a couple of years ago the biggest deal was the inboard outbaord looked like something from offshore racing boat. i see you already bought there manifolds and up pipes they also make a water cooled turbo pedestal. i think a water to air intercooler would real work well. efi live tuned and some add on gauges like pyro and boost. weight wise whats the difference between the 8.1 and 6.6? vdrive wise i know ZF makes stuff rated up to 600-700lbs of torque that duramax has so much top torque and speed maybe a 2 speed so can good bottom end power and then still be able to cruise at 50-60 mph that be a direction to go also

dmaxstore
02-14-2013, 10:42 PM
The liquid cooled up pipes and manifolds we are using are completely new and 1 off. This will be there test motor. PPE has liquid cooled up pipes and turbo pedestal. They have done some marine conversions and we are a dealer for them. However most of this project will be all new and experimental..
How do I get in touch with ZF? My biggest concern right now is Vdrive strength and gear ratio. I would like to get more info on what they have to offer.
We are fabricating a custom billet aluminum flex plate to mate up with the bell housing.. Next test fitting the LMM for clearance. As of now it looks like we will need to modify the oil pan.

Again any V-drive help will be appreciated..

psychobilly
02-15-2013, 02:31 AM
Along with what I PMed you, you may want to call SKIDIM and talk to Richard about the ZF gears as they sell them and he's very knowledgable. Every time I've went to buy something from them, they have been honest with me and VERY helpful, even when it came to trouble shooting an issue. Very nice, stand up people there.

gotjag941
02-15-2013, 07:51 AM
Call Chris Jones he is a V Drive Expert tel:954-812-5558 He will have all the info your in need of...Good luck

dmaxstore
02-15-2013, 10:29 AM
Along with what I PMed you, you may want to call SKIDIM and talk to Richard about the ZF gears as they sell them and he's very knowledgable. Every time I've went to buy something from them, they have been honest with me and VERY helpful, even when it came to trouble shooting an issue. Very nice, stand up people there.


10-4 I will give him a call.


Call Chris Jones he is a V Drive Expert tel:954-812-5558 He will have all the info your in need of...Good luck

Thank you

thamax
02-15-2013, 11:00 AM
how bought the cruise control whats your plan for the prefect pass system and the diagnostics sytem built into dash? you are adding billet fuel rails to the motor from the looks of that photo? is this going to be closed loop cooling sytem or run off raw water?

Table Rocker
02-15-2013, 11:54 AM
There is a company in New Zealand that does conversions using a different diesel.
http://www.marinediesel.net.nz/home.htm
Here is a Nautique they did:
http://www.marinediesel.net.nz/rp-superair.htm
They had a U.S. affiliate in Stillwater, Oklahoma, but they might no longer be doing it.
http://www.perfprotech.com
http://www.h2osportsunlimited.com
Here is a diesel in a Tigé.
http://www.marinediesel.net.nz/tige/CIMG0900.jpg

Hopefully someone will have some info that would help.

dmaxstore
02-15-2013, 06:51 PM
There is a company in New Zealand that does conversions using a different diesel.
http://www.marinediesel.net.nz/home.htm
Here is a Nautique they did:
http://www.marinediesel.net.nz/rp-superair.htm
They had a U.S. affiliate in Stillwater, Oklahoma, but they might no longer be doing it.
http://www.perfprotech.com
http://www.h2osportsunlimited.com
Here is a diesel in a Tigé.
http://www.marinediesel.net.nz/tige/CIMG0900.jpg

Hopefully someone will have some info that would help.


I am aware of this company. They do offer a Duramax crate motor ready to drop in. the bad thing is they cost $50k and have to come with full emissions including DPF.

Table Rocker
02-15-2013, 07:14 PM
I was just thinking you might be able to contact the guys in Stillwater regarding drive ratio and prop pitch. I have no idea how helpful they would be.

dmaxstore
02-18-2013, 03:40 PM
how bought the cruise control whats your plan for the prefect pass system and the diagnostics sytem built into dash? you are adding billet fuel rails to the motor from the looks of that photo? is this going to be closed loop cooling sytem or run off raw water?


Not concerned about the perfect pass at this time. We will have to see if it can still be utilized.

dmaxstore
02-20-2013, 12:36 PM
We need the following V Drive (ZF-63-IV-1.294 ratio in position A) Any help getting one of these will be appreciated.
:):):):):):):)

Thank you Greg at Acme props for the assistance so far. Im sure we will be needing much more when this project hits the water.

krutzmart
03-18-2013, 07:44 PM
Dmax,
How is the conversion coming along.
Please post some pics if you can ?

dmaxstore
03-18-2013, 10:43 PM
Dmax,
How is the conversion coming along.
Please post some pics if you can ?

We should have some progress to report next week. The last 2 weeks have been all work and no play.

dmaxstore
03-20-2013, 01:12 AM
Billet flex plate adapter plate has arrived :) We have time set aside this Friday to get some more of this project ready for the lake::D


http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/Mastercraft1_zps73bd8867.jpg

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/Mastercraft2_zpsd11522c4.jpg

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/Mastercraft3_zps88e73e30.jpg

dmaxstore
03-20-2013, 01:19 AM
Big thanks to Eric at OJ props for the recent input. Prop selection help is much appreciated. :toast:

Aric'sX15
03-20-2013, 01:43 AM
This thing needs to role some coal soon!!!!

thamax
03-20-2013, 08:30 PM
looks good how about the oil pan? will it? did u find a different V-drive to run yet? or staying with the oem

dmaxstore
03-21-2013, 10:33 AM
Pretty sure this is the one we will be installing (ZF-63-IV-1.294 ratio in position A). However I am trying to get a call back from Mastercraft to verify some of the details of the 4.2 tdi they are running in the X55.

Stefan
03-21-2013, 10:52 AM
However I am trying to get a call back from Mastercraft to verify some of the details of the 4.2 tdi they are running in the X55.

Ist the 4.2TDI something they're selling officially or just a test project?

JRW160
03-21-2013, 12:46 PM
Ist the 4.2TDI something they're selling officially or just a test project?
It was an option, but tdi optioned boats are pretty rare. I think there was a ridiculous upcharge ($15k maybe?). I'm not sure if it is still available.
http://www.mastercraft.com/qai/parse/mcpower/tdi255/

dmaxstore
03-21-2013, 12:58 PM
It was an option, but tdi optioned boats are pretty rare. I think there was a ridiculous upcharge ($15k maybe?). I'm not sure if it is still available.
http://www.mastercraft.com/qai/parse/mcpower/tdi255/




Talked to Bill Gatos at Mastercraft today. Yes the 4.2 TDI is available (europe) I imagine the TDI up charge is in the 30-40k range.
Got some specs on the V-drive and RPM with prop combo they are using. The 4.2 tdi is turning 5200 rpm with a 1.5 to 1 V-drive and a 14.75 x17.5 prop. The Dmax will run about 3300 RPM and use a 1.294 to 1 V drive and prop to be determined.

clrussell
03-21-2013, 01:28 PM
Where you guys located at??


Tapatalk

dmaxstore
03-21-2013, 02:34 PM
Where you guys located at??


Tapatalk




Northern CA, between Sacramento and South Lake TAHOE.

clrussell
03-21-2013, 03:27 PM
Cool! I was hoping like Texas or something and you were hiring!


Tapatalk

dmaxstore
03-21-2013, 05:18 PM
Bell housing bolted up to a core short block. No oil pan on at this point.

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/mstrcraft1_zps35510530.jpg




Dropping in for a test fit.

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/mstrcrft5_zpsbb126029.jpg


V drive connected and motor mocked up on blocks. Motor mounts will be modified and oil pan will need some adjustments.

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/mstrcrft6_zps88f721b4.jpg

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/mstrcraft2_zps46b686c5.jpg

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/mstrcraft3_zps41dc33f9.jpg

krutzmart
04-02-2013, 01:04 PM
DMAX,
Have you put alot of thought into your electrical ? Sure you have.....

What types of electrical issue are you going to run into tieing into factory harness ?

Or are you planning on pullen some new wire ?

Great Project
Thanks

dmaxstore
04-08-2013, 05:39 PM
DMAX,
Have you put alot of thought into your electrical ? Sure you have.....

What types of electrical issue are you going to run into tieing into factory harness ?

Or are you planning on pullen some new wire ?

Great Project
Thanks


We will have some help from PPE or another custom harness builder when we get there. The New ZF V-Drive has arrived with a 1.29 ratio.

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/Vdrive_zps3d69c5ab.jpg

dmaxstore
04-09-2013, 06:12 PM
Motor mounts have been made. Now time for oil pan mod, this will be a bit more technical.




http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/MTRMOUNT3_zps0c306e4b.jpg


http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/MTRMOUNT2_zpsca3645ea.jpg


http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/MTRMOUNT_zpse408dcc1.jpg

gotjag941
04-09-2013, 07:14 PM
Can't wait to heard about the finished product

Sotipnomon
04-10-2013, 12:13 AM
Being new to my own boat, having bought a duramax to pull it and selling diesel fuel for a living, I am interested...

dmaxstore
04-12-2013, 03:31 PM
Oil pan pretty much done except a trip to the powder coat shop. We ended up modifying the stock pan and it worked out very well.


http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/pan3_zps9c5fc9f4.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/pan3_zps9c5fc9f4.jpg.html)

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/pan2_zpsb8f96c9b.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/pan2_zpsb8f96c9b.jpg.html)

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/pan1_zpsef42b59a.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/pan1_zpsef42b59a.jpg.html)

TOO-TALL
04-12-2013, 06:56 PM
WOW.....what a awesome project.can't wait to see the end result.

petermegan
04-13-2013, 02:09 AM
Lot of work, it is coming along great. Love the progress photos.

quincyfirefighter
04-13-2013, 09:52 AM
Northern CA, between Sacramento and South Lake TAHOE.

Awesome project.... dmax sounds like you may be around my old stomping grounds. Lived in Granite Bay when I was a kid. Son lives and works in El Dorado Hills. PM me were you are if you want... :cool:

dmaxstore
04-13-2013, 11:23 AM
We are located just outside of Placerville in Diamond Springs. We specialize in Duramax diesels so putting one in a boat just makes sense. Trips across Lake Tahoe are in the plans for this summer.

dmaxstore
04-13-2013, 08:57 PM
Dropped and shortened oil pick up for custom pan.

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/oil2_zps8072c378.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/oil2_zps8072c378.jpg.html)


http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/oil1_zps44e12769.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/oil1_zps44e12769.jpg.html)

thamax
04-16-2013, 07:59 PM
looks like all the mounting issues are figured out whats the plan for controls? PPE got something that will help you out like throttle setup and engine harness. the 8.1 had a dbw wire throttle right? whats this going to have? that pan and engine mount looks factory good work. maybe MC will check this thread out and offer a real diesel not a 4.5 that is Europe only

dmaxstore
04-16-2013, 10:16 PM
PPE is building the Harness now. We will be using the LBZ throttle by wire, modified for this project.

Here is the pan back from powder coat and installed. A fresh coat of black paint has been applied. Head studs and heads going back on tomorrow. Followed up by the V-drive and going back in the boat.


http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/MCmotor_zpsa67e4abf.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/MCmotor_zpsa67e4abf.jpg.html)

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/MCmotor1_zpsb8e2d1ee.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/MCmotor1_zpsb8e2d1ee.jpg.html)

clrussell
04-16-2013, 10:47 PM
Sweet.... Can't wait


Tapatalk

dmaxstore
04-18-2013, 10:11 AM
ARP studs are in, and heads back on. No better time to do this than now.

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/Studs_zps6beb1dfb.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/Studs_zps6beb1dfb.jpg.html)

Brian B
04-18-2013, 01:16 PM
Did I meet you at King Of The Hammers? You have a sick dmax dually right?

Very cool project!

dmaxstore
04-18-2013, 01:23 PM
Did I meet you at King Of The Hammers? You have a sick dmax dually right?

Very cool project!

10-4 I was at KOH this year. Very fun.

46Chief
04-18-2013, 02:10 PM
Curious about the optimium RPM range of the Duramax?

How low can the RPMS be while still pulling good power?

Whats the redline on one?

zvery cool build, I don't envy trying to shoehorn that thing into a V-drive configuration at all.

timvan
04-18-2013, 02:31 PM
Curious about the optimium RPM range of the Duramax?

How low can the RPMS be while still pulling good power?

Whats the redline on one?

zvery cool build, I don't envy trying to shoehorn that thing into a V-drive configuration at all.

All depends on the tune, this build looks like it should handle a stout tune if the fuel is there

dmaxstore
04-18-2013, 02:47 PM
Optimal RPM for the Duramax is 1800-2000. We will probably set a max RPM at 3300 although redline is around 4k.

dmaxstore
04-26-2013, 01:23 PM
Motor,V-drive, and valve covers installed. Starting on injection and harness next.

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/Boat_zps67e6b2c9.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/Boat_zps67e6b2c9.jpg.html)

zsqure
04-26-2013, 02:04 PM
Sweet!

bjw444
04-26-2013, 03:28 PM
I love it!!

thamax
04-30-2013, 02:50 PM
what are u going to use for a lift pump? something external or in tank?

dmaxstore
04-30-2013, 03:40 PM
what are u going to use for a lift pump? something external or in tank?



The OE Duramax fuel system does not have a lift pump, just the injection pump. This is a poor design and we will be adding an Airdog fuel system. We run these on all of our trucks and highly recommend them.

Forrest-X45
04-30-2013, 05:19 PM
The OE Duramax fuel system does not have a lift pump, just the injection pump. This is a poor design and we will be adding an Airdog fuel system. We run these on all of our trucks and highly recommend them.

Just curious why the factory CP3 injection pump is a poor design? It seems to work great and the factory dmaxes produce great power. However, I can definitely see the advantages to an aftermarket lift pump like the Airdog.

dmaxstore
04-30-2013, 05:50 PM
Just curious why the factory CP3 injection pump is a poor design? It seems to work great and the factory dmaxes produce great power. However, I can definitely see the advantages to an aftermarket lift pump like the Airdog.


The CP3 is a good unit. The fuel system running to the CP3 is a bad design. It runs from the motor to the tank under vacuum. It does not filter fuel very good and has poor water separation. These are all the reasons the AirDog fuel system is highly recommended and will be used.

petermegan
04-30-2013, 06:13 PM
Geez, you guys aren't needing much help from the Forum. Top Job. Have Fun

thamax
05-01-2013, 09:57 PM
Ok so airdog is external pump filter combo I run one all my diesels what will the pickup be oem with the pump removed or something custom?

dmaxstore
05-02-2013, 06:08 PM
Turbo, Injectors, High pressure lines installed. Its getting hot and we want to get this boat in the water. Waiting for (Harness, Intercooler, Heat exchanger)


http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/boatmotor_zpse3ddaa65.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/boatmotor_zpse3ddaa65.jpg.html)

gotjag941
05-02-2013, 07:06 PM
That's awesome Im jealous

clrussell
05-02-2013, 07:11 PM
Still stock turbo? Or decide to go ahead and add something else?


Tapatalk

dmaxstore
05-02-2013, 07:15 PM
Still stock turbo? Or decide to go ahead and add something else?


Tapatalk



Using stock turbo, it will be perfect for the power levels we are going for.

clrussell
05-02-2013, 07:34 PM
Awesome, can't wait to see final product.. Look great!

I'll send you a pm about trans kits in a bit


Tapatalk

dmaxstore
05-13-2013, 11:29 PM
Motor came back out for some minor adjustments. Its back in now and getting ready for harness.


http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/Boat5_zps4b6020cd.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/Boat5_zps4b6020cd.jpg.html)

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/Boat6_zps7ecc0597.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/Boat6_zps7ecc0597.jpg.html)


Custom adapter made to connect fresh water impeller to our ATI harmonic damper. This adapter came out sweet, thanks Airpoint;)

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/BoatImpellerDrive_zpsb9f7d092.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/BoatImpellerDrive_zpsb9f7d092.jpg.html)

dmaxstore
06-06-2013, 07:05 PM
Estimated temps this weekend are in the triple digits. Our mission is to have this boat burning diesel by next weekend and making waves in Lake Tahoe over the 4th of July.
Final electrical, IC plumbing and exhaust system under fabrication.

We will need some Props for testing, (Anyone?)


http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/MSTRCRAFT_zps1bd03db8.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/MSTRCRAFT_zps1bd03db8.jpg.html)

Traxx822
06-06-2013, 07:18 PM
um um um um um .... oh my god.

thamax
06-07-2013, 04:58 PM
can you tell us about you water to air intercooler looks big and bolted together so it can be cleaned? will u run straight from the raw water pump to the intercooler then the motor?

dmaxstore
06-07-2013, 05:14 PM
Penninsular diesel supplied the intercooler it is serviceable. It is the same one they have been running on their 6.5 diesels for years. It will get raw lake water through it. This boat will use a closed cooling system with a Penninsular diesel heat exchanger and oil cooler. Raw water will run through the oil cooler then the heat exchanger next the intercooler followed by the manifolds and up pipes exiting out the exhaust down pipe and through the OE exhaust ports.

Jerseydave
06-07-2013, 05:57 PM
Great work so far. That D-max would be such a great engine in an X-star!

I can picture it now......a lifted 2500 Suburban with a D-max pulling a D-max powered X-star!
Can you say "dream rig!"

dmaxstore
06-07-2013, 06:23 PM
Great work so far. That D-max would be such a great engine in an X-star!

I can picture it now......a lifted 2500 Suburban with a D-max pulling a D-max powered X-star!
Can you say "dream rig!"




She will look good behind our tow rig.:D

http://i814.photobucket.com/albums/zz61/dmaxstorep/2005%20Duramax/IMG_5865_zpsbf774504.jpg (http://s814.photobucket.com/user/dmaxstorep/media/2005%20Duramax/IMG_5865_zpsbf774504.jpg.html)

dmaxstore
06-08-2013, 11:56 AM
We are waiting for some more mandrel bends to show up Monday so we can finish up the inter cooler piping,cooling, and exhaust systems. We test fit the motor cover late yesterday and had to loose about 2 inches off of each rear ice chest to clear the air charger and heat exchanger. The fit is very good and this re power looks like it came off the showroom floor.
Our ECM is on its way back from the master of all Duramax tuning (Rob Coddens) we should be uploading some running video by next weekend.

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/boat9_zps09d058c5.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/boat9_zps09d058c5.jpg.html)

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/boat8_zps837940fd.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/boat8_zps837940fd.jpg.html)

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/boat10_zps48d56264.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/boat10_zps48d56264.jpg.html)

barefoot
06-08-2013, 03:23 PM
That thing is just BaD A&&! I'm envious of people that can do this. Figuring out how to put a diesel in a boat, converting it to a marine application, and pulling it off is impressive. My hats off to you guys!

Skipper
06-09-2013, 03:37 PM
That is incredible! What kind of horse power and torque do you think you'll get out of it? How does that compare to the gasoline engines that come standard in that boat?

dmaxstore
06-09-2013, 03:44 PM
This should make around 350 HP and 600 ftlbs. It's capable of a lot more but we are really looking for economy. We will turn it up once everything has been tested.

petermegan
06-09-2013, 08:09 PM
Very professional guys, didn't need much forum help there. Better go looking for a lowwwww drop hitch for your towbar :)

dmaxstore
06-10-2013, 11:52 AM
Very professional guys, didn't need much forum help there. Better go looking for a lowwwww drop hitch for your towbar :)


Looking for some Prop's to test out, got the drop hitch covered.;)

CantRepeat
06-10-2013, 12:13 PM
Looking for some Prop's to test out, got the drop hitch covered.;)


Call OJ Props and tell them what you are doing. I'm pretty sure Eric will work with you on loaners.

dmaxstore
06-10-2013, 12:57 PM
Call OJ Props and tell them what you are doing. I'm pretty sure Eric will work with you on loaners.



10-4, just talked to Eric. We will be running the 14.75x17.5 we already have to get some base line #s to go by.

Forrest-X45
06-10-2013, 04:18 PM
Eric at OJ is great but I would give the guys a call at Acme. That X-80 would love one of their new 15" props. A 15x15.75 or 15x17.75 would work very well or they will have better suggestions. Plus they have more cup sizes to try.

Acme Props - 1-888-661-Acme

I just tried one of their 15" props and it is outstanding.

thamax
06-10-2013, 07:18 PM
looks like it will be running this week what did u guys do with 8.1 that came out of the boat?

dmaxstore
06-10-2013, 07:28 PM
looks like it will be running this week what did u guys do with 8.1 that came out of the boat?


Its just sitting here complete if you know anyone who wants it. It runs great and has 392 hours on it.

petermegan
06-10-2013, 07:53 PM
Eric at OJ is great but I would give the guys a call at Acme. That X-80 would love one of their new 15" props. A 15x15.75 or 15x17.75 would work very well or they will have better suggestions. Plus they have more cup sizes to try.

Acme Props - 1-888-661-Acme

I just tried one of their 15" props and it is outstanding.

Try as many cup sizes as you can, that's my motto. :)

CantRepeat
06-10-2013, 08:58 PM
Try as many cup sizes as you can, that's my motto. :)

I'm happy with anything at or above the double D range.

dmaxstore
06-10-2013, 11:37 PM
Fuel system is near completion. We modified the OE sending unit and pick up, it turned out pretty cool and should work very well submerged in diesel. The tried, true, and popular Airdog DF-165 fuel system has been mounted and plumbed.

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/fuelsender1_zps8ba076c8.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/fuelsender1_zps8ba076c8.jpg.html)


http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/fuelsender_zps8a4edd97.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/fuelsender_zps8a4edd97.jpg.html)

dmaxstore
06-12-2013, 10:42 PM
Exhaust system finished up today. Chris with Alpine design put the TIG welder in overdrive. Got the exhaust and inter cooler pipes finished up. We will be using the factory exhaust ports with this stainless masterpiece.


http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/BoatExhaust1_zps9af165df.jpeg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/BoatExhaust1_zps9af165df.jpeg.html)


http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/BoatExhaust2_zps8ec90127.jpeg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/BoatExhaust2_zps8ec90127.jpeg.html)

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/BoatExhaust3_zps3673fe11.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/BoatExhaust3_zps3673fe11.jpg.html)

SILENTxNOISE
06-13-2013, 12:23 AM
Holy hell.. I would love to see this run!

dmaxstore
06-14-2013, 05:25 PM
Shes alive: :thumb Here is a quick link. Electrical is not finished and there is still plenty to do. This is a milestone for this project and we are very excited to hit the water.




Duramax powered Mastercraft X80 - YouTube (http://youtu.be/HOY0zVsSQC4)

SILENTxNOISE
06-14-2013, 06:07 PM
Shes alive: :thumb Here is a quick link. Electrical is not finished and there is still plenty to do. This is a milestone for this project and we are very excited to hit the water.




Duramax powered Mastercraft X80 - YouTube (http://youtu.be/HOY0zVsSQC4)


That put a smile on my face! Couldn't imagine what it'll sound like going down the lake!

Forrest-X45
06-14-2013, 06:19 PM
Way cool project! Keep the updates coming and I can't wait to see the water test.

dmaxstore
06-14-2013, 06:29 PM
That put a smile on my face! Couldn't imagine what it'll sound like going down the lake!



Pretty sure it is going to be very quiet on the water. Its quite a bit quieter than the 8.1 gasser that came out.

clrussell
06-14-2013, 07:26 PM
All In all has this been that difficult? Say like much more difficult than swapping a gas truck to a diesel?

P.s. I love how it sounds!!


Tapatalk

dmaxstore
06-14-2013, 09:36 PM
Here is a little more running video. We plan on dipping it in the lake tomorrow to test out a couple more things.


http://youtu.be/97mKEHatDyM

dmaxstore
06-16-2013, 10:48 AM
The day we have been waiting for has arrived. Lake day.:D

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/BoatDiesel_zps12e2ce18.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/BoatDiesel_zps12e2ce18.jpg.html)


First time in the water. We did not have a MAF sensor in so we are running on reduced power and RPM for today. The new V-drive is pretty noisy until it gets a little throttle. All in all everything went extremely well. Prop testing and finishing the electrical will be on next weeks agenda.


http://youtu.be/qeGhqZQzjT0

TOO-TALL
06-16-2013, 12:53 PM
WOW.....That sounds bad azz! nice work

willyt
06-16-2013, 05:05 PM
Its just sitting here complete if you know anyone who wants it. It runs great and has 392 hours on it.


What's the story? Do you guys still have it? How much would you want for it?

88 PS190
06-16-2013, 08:33 PM
The new V-drive is pretty noisy until it gets a little throttle. All in all everything went extremely well. Prop testing and finishing the electrical will be on next weeks agenda.


http://youtu.be/qeGhqZQzjT0



What's the idle RPM like?

dmaxstore
06-17-2013, 10:34 AM
What's the idle RPM like?



We did not have any gauges on this trip. The idle seemed a little high and it was hard to keep the boat under 8mph when in gear. Fine tuning will be done this week and then back to the lake.

Here is a better clip under acceleration.


http://youtu.be/1JKkM_k6L2M

thamax
06-17-2013, 11:42 PM
how much difference in power would say the boat has now? seems to get up and go pretty good for a x-80

dmaxstore
06-18-2013, 08:50 AM
how much difference in power would say the boat has now? seems to get up and go pretty good for a x-80

It's still a little early to tell. The current tune should be around 350hp and 620ftlbs. On the first day out without a MAF sensor we were not even getting those #s. However the throttle response and power was night and day compared to the gas motor. Once tuning and prop selection are dialed we will post up some more info.

CruisinGA
06-18-2013, 09:13 AM
I want to see someone footing behind this boat :D

thamax
06-18-2013, 04:37 PM
thats awesome did u stay under 15K on the project

dmaxstore
06-18-2013, 05:19 PM
thats awesome did u stay under 15K on the project Probably in that ball park. Not including the used motor or out time.

thamax
06-25-2013, 12:47 PM
any updates so far? get the MAF installed?

dmaxstore
06-25-2013, 12:53 PM
MAF is in and we are working on the mounting bracket today. Also finishing the electrical and should be going back in our local lake this weekend. Big trip planned for the 4th of July in Lake Tahoe.:)

thamax
06-26-2013, 01:58 PM
Keep us posted on the progress

bzettler83
07-08-2013, 07:47 PM
Cant wait for an update and new video!

dmaxstore
07-08-2013, 09:21 PM
Here are a couple more pics. Motor in before cover installed. The custom intake with MAF sensor turned out sweet but did not work as well as we anticipated. We will need to make some tweeks in order to get a better MAF reading. At this point with the first tune installed she runs better with the MAF unplugged. This issue will be easily fixed using an OE style intake or fine tuning the MAF sensor.
We are still running the same prop as the big block had and hoping to get some props for testing A.S.A.P


http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/MastercraftMotor_zpscac14ee4.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/MastercraftMotor_zpscac14ee4.jpg.html)

Baldwin Beach, South Lake Tahoe, CA 4th of July weekend 2013.

http://i814.photobucket.com/albums/zz61/dmaxstorep/Mastercraft%20X80/4thboat_zps97b20f8f.jpg (http://s814.photobucket.com/user/dmaxstorep/media/Mastercraft%20X80/4thboat_zps97b20f8f.jpg.html)

TOO-TALL
07-08-2013, 11:01 PM
Looking awesome..

Question:
Are those go pro mounts on the right side forward tower leg?

dmaxstore
07-09-2013, 10:09 AM
Looking awesome..

Question:
Are those go pro mounts on the right side forward tower leg?



No, we mounted 2 sets of Rigid Industries D2 lights to the tower.

thamax
07-09-2013, 07:51 PM
So what kind performance are you getting so far? I know there is still tuning and changes you will make. How gals per hour? does it cruise at 50 mph or 40?

dmaxstore
07-10-2013, 12:08 AM
So what kind performance are you getting so far? I know there is still tuning and changes you will make. How gals per hour? does it cruise at 50 mph or 40?



So far we are running the same prop our 8.1 had. The top speed with it at 5k rpm was around 37mph. We did change the V-dirve from a 1.5 to 1 to a 1.29 to 1 ratio for the conversion. With the Duramax we are running a WOT of 3200 rpm and getting a top speed of 34 mph. The results early on are impressive and show much potential. We have sourced a different prop with a lot more pitch from a friend and will be testing it this weekend. Correct prop and tuning should make a substantial improvement all over the rpm range. We are anxiously waiting for Eric from O.J props to get back from vacation. He has been nice enough to offer his expertise and get us some props to test. We will also be adding about 50hp to the current tune of 360hp very soon

thamax
07-10-2013, 12:25 AM
what prop is on right now size and pitch? maybe somebody knows what they ran with the Yanmar diesels back some years ago when MC had a short run of them or the current TDI diesels! was the ever a X-80 with twin Yanmars? i've seen twin LY6 but nothing bigger

dmaxstore
07-10-2013, 11:43 AM
what prop is on right now size and pitch? maybe somebody knows what they ran with the Yanmar diesels back some years ago when MC had a short run of them or the current TDI diesels! was the ever a X-80 with twin Yanmars? i've seen twin LY6 but nothing bigger


I would love to know what the details on that prop are also. The current prop that was on the 8.1 and still on now is an OJ 14.75 x 17.5. A friend of mine is loaning us a 14x20 with a 180 cup for testing this weekend.

thamax
07-10-2013, 12:45 PM
That is a big change in size and pitch there is a yellow 05 x-star on eBay with a yanmar diesel no prop or spec pics maybe contact the seller for some insight. I think u have the power to spin a pretty large prop but picking the right pitch is tricky and cup size! Is it making 500ft pounds of troque but 1/3 slower

dmaxstore
07-10-2013, 01:05 PM
That is a big change in size and pitch there is a yellow 05 x-star on eBay with a yanmar diesel no prop or spec pics maybe contact the seller for some insight. I think u have the power to spin a pretty large prop but picking the right pitch is tricky and cup size! Is it making 500ft pounds of troque but 1/3 slower


Currently making 360hp and 700ftlb's wich is pretty much stock power, we will probably bump that a bit also. Yes the loaner prop is a big jump, trial and error time.:)

Thrall
07-10-2013, 01:15 PM
The Yanmar has considerably less torque than the Dmax so not a good comparison.
I've seen 19.5 pitch props on the Lsa x45.
Jumping from 17.5 to 20 pitch should give you a few more mph at least.
Not sure how limited in dia the x80 is but I think much over 20" pitch on a 14" ish prop and you won't have enough surface area to take full advantage of the added pitch.

Very interesting awesome project. Keep up the good work.

76S&S
07-10-2013, 03:50 PM
I don't know for certain, but I would guess that the Yanmar doesn't turn nearly the rpm's of the D'max. So, I'm not sure that is a good comparison.

thamax
07-10-2013, 04:52 PM
I understand they are totally different setups. rpms is everything on boats! all the gasers spin at 5-5200 rpms while the redline on this dmax is somewhere in the high 3000-4000k so alot of difference that is my point there. yanmar 6LP is rated up to 3800 rpms! they still build them check there website out yanmarmarine.com

dmaxstore
07-10-2013, 05:39 PM
I understand they are totally different setups. rpms is everything on boats! all the gasers spin at 5-5200 rpms while the redline on this dmax is somewhere in the high 3000-4000k so alot of difference that is my point there. yanmar 6LP is rated up to 3800 rpms! they still build them check there website out yanmarmarine.com


The LMM Duramax has a Redline of 4700 rpm. We have limited the Redline through tuning to 3300. We increased the out put speed of the prop with the new V-drive ratio. More adjustment can be made with tuning and prop selection.

thamax
07-10-2013, 07:55 PM
Are you hitting 3300 rpms right now? where will you set the redline after tuning?

jgraham37128
07-10-2013, 08:13 PM
The LMM Duramax has a Redline of 4700 rpm. We have limited the Redline through tuning to 3300. We increased the out put speed of the prop with the new V-drive ratio. More adjustment can be made with tuning and prop selection.

I would call Eric at OJ props I bet he will know exactly what you need.

dmaxstore
07-11-2013, 09:29 AM
Are you hitting 3300 rpms right now? where will you set the redline after tuning?



Yes we are running 3300 rpm at WOT now and do not plan on raising it with the tuning. Eric @ OJ props has been helping us with prop selection.

Forrest-X45
07-11-2013, 03:12 PM
Working with Eric and OJ is great but I feel you are missing a huge opportunity by not consulting the guys at Acme Marine. I have tested a number of props and finally tested one from Acme this summer and it their prop made a noticeable difference over the others I was testing. I would recommend at least giving them a call and potentially trying one of their props.

1 888 661 ACME

dmaxstore
07-11-2013, 03:17 PM
Working with Eric and OJ is great but I feel you are missing a huge opportunity by not consulting the guys at Acme Marine. I have tested a number of props and finally tested one from Acme this summer and it their prop made a noticeable difference over the others I was testing. I would recommend at least giving them a call and potentially trying one of their props.

1 888 661 ACME



Thanks for the info.

dmaxstore
07-21-2013, 11:40 AM
We ran the 14x20 prop last weekend. It gave us a bit more mid range but no additional top speed. Eric @ OJ props has been nice enough to send us a 14x15.5 to test out. We will be trying it out this week.

cbryan70
07-21-2013, 09:56 PM
15.5 isn't going to give u any more speed especially going from a 20 pitch

dmaxstore
07-22-2013, 12:12 PM
15.5 isn't going to give u any more speed especially going from a 20 pitch




We are probably gooing to ad some RPM too.

thamax
07-22-2013, 01:48 PM
You should talk to robert at nettle props he can help you out and add insight on the setup. He will work with you on getting it right. deals in acme and OJ so he knows both brands well. whats the elevation that the boat is used at? what is boat overall weight any ballast or just running around empty.

512-836-2287

Midnightrider
08-04-2013, 10:29 AM
simply beautiful

1redTA
10-26-2013, 09:08 PM
Bump for updates?

dmaxstore
10-28-2013, 10:56 AM
The Boat is inside for the winter. For the last trip of the year we turned the RPM up to 3700 and it worked well. Top speed is around 40mph full of passengers. Eric at OJ props is going to send us out a 22 pitch prop to experiment with. Plans for 2014 will be to ad an electric selectable side exit exhaust cut out so we can hear the turbo when we want it heard:D. Finish hooking up the mechanical gauges so we are not relying solely on the digital gauge. Also we will be adding as much ballast as possible to see what the wake can do.

clrussell
10-28-2013, 11:13 AM
Dsp5 with smoke/ lope tune?? ;)

Table Rocker
07-21-2014, 10:33 PM
I wonder what happened with this. He hasn't logged on since October of last year.

1redTA
07-22-2014, 07:04 AM
maybe he's rolling coal on the water?

clrussell
07-22-2014, 07:46 AM
I think they had it going last year and had some videos of it.. Last I heard or saw of it