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Engine Nut
07-06-2006, 11:37 PM
Thought you guys might want to see what the NEW MCX with the ETX CAT exhaust loks like. Testing shows performance equal to or better than the MCX with conventional ETX manifolds.

Engine Nut

bigmac
07-07-2006, 12:24 AM
Thought you guys might want to see what the NEW MCX with the ETX CAT exhaust loks like. Testing shows performance equal to or better than the MCX with conventional ETX manifolds.

Engine NutVery cool. Thanks for posting. Looks like the manifolds are on backwards, though... :D

BuoyChaser
07-07-2006, 12:36 AM
Very cool. Thanks for posting. Looks like the manifolds are on backwards, though... :D
what are the benefits, any quieter???

NatesGr8
07-07-2006, 12:52 AM
better emissions???

Engine Nut
07-07-2006, 08:35 AM
The catalyst exhaust system reduces exhaust emissions dramatically. It reduces Hydrocarbon (HC) and oxides of nitrogen (NOx) to less than 5 grams combined and reduces Carbon Monoxide (CO) to extremely low levels.

Engine Nut

bdecker
07-07-2006, 08:50 AM
Is it true that a closed cooling system will be required as well?

Engine Nut
07-07-2006, 02:20 PM
No, closed cooling is not required. The systsm works fine with raw water cooling.

east tx skier
07-07-2006, 02:46 PM
Thanks for posting, EN.

NatesGr8
07-07-2006, 07:58 PM
hey enginenut, have any extras lying around, i'd be willing to throw one in my boat and give it a test run. :rolleyes:

Ric
07-07-2006, 08:02 PM
Thought you guys might want to see what the NEW MCX with the ETX CAT exhaust loks like. Testing shows performance equal to or better than the MCX with conventional ETX manifolds.

Engine Nut
nut would this bring the ability to have a closed loop system?

Engine Nut
07-07-2006, 11:52 PM
Yes, the system has oxygen sensors in each manifold right before the catalyst so it runs in closed loop up to about 4200 RPM.

H20skeefreek
07-08-2006, 12:51 AM
Very cool. Thanks for posting. Looks like the manifolds are on backwards, though... :D
definitely NOT on backwards!

erkoehler
07-08-2006, 12:53 AM
I'm more interested in footing behind the new 400hp engine thats coming out:) It's gonna be sssssssssssswwwwwweeeeeeettttt!

Workin' 4 Toys
07-08-2006, 01:12 AM
Kind of funny, it's not even in a boat, and you still can't see any of the BLOCK... There is ALOT of "stuff" on there.....:eek:

Workin' 4 Toys
07-08-2006, 01:12 AM
I'm more interested in footing behind the new 400hp engine thats coming out:) It's gonna be sssssssssssswwwwwweeeeeeettttt!
If the mufflers can be removed, I may be interested........;)

erkoehler
07-08-2006, 01:20 AM
If the mufflers can be removed, I may be interested........;)


$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
















and no warranty

sand2snow22
07-08-2006, 03:08 AM
The catalyst exhaust system reduces exhaust emissions dramatically. It reduces Hydrocarbon (HC) and oxides of nitrogen (NOx) to less than 5 grams combined and reduces Carbon Monoxide (CO) to extremely low levels.

Engine Nut

EN, what are the emissions on the 2005 MCX? What's the HP rating, too? Thanks......

Ric
07-08-2006, 11:36 AM
Kind of funny, it's not even in a boat, and you still can't see any of the BLOCK... There is ALOT of "stuff" on there.....:eek:
doesn't look like any more "stuff" on it than the current mcx... The manifolds do look fatter though.

probably gave back the touted weight savings achieved when first going to the aluminum etx

JimN
07-08-2006, 12:08 PM
What is the stainless-looking cylinder, mounted vertically behind and above the oil filter?

Workin' 4 Toys
07-08-2006, 04:17 PM
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
















and no warranty
That's it, the decision has been made.........:mad:

Ric
07-08-2006, 04:59 PM
Yes, the system has oxygen sensors in each manifold right before the catalyst so it runs in closed loop up to about 4200 RPM.
will there be a problem with the new blended fuels (ethanol)

TMCNo1
07-08-2006, 05:46 PM
Very cool. Thanks for posting. Looks like the manifolds are on backwards, though... :D


They are on backwards for a V-Drive, but I suppose that the engine pictured is a Direct-Drive.

TMCNo1
07-08-2006, 05:52 PM
What is the stainless-looking cylinder, mounted vertically behind and above the oil filter?


Looks like the transmission cooler was installed on the engine after it was painted, the outlet tube is on the bottom and I guess the inlet tube is hidden behind the hose above it.

JimN
07-08-2006, 06:24 PM
TMCNo1- look at the black lines going to the front of the motor- that's where the oil cooler is. They have the usual brass fittings, too. It's next to the upper pulley (with an unpainted clamp) and is between the raw water pump and the thermostat housing.

Engine Nut
07-08-2006, 09:09 PM
The combined HC and NOx for a 2005 model MCX is 11.74 grams/KW-h compred to less than 5 for the Catalyst Motor. MC adveriises the MCX at 350 HP.


EN, what are the emissions on the 2005 MCX? What's the HP rating, too? Thanks......

Engine Nut
07-08-2006, 09:17 PM
Oops we forgot to remove that before taking the photo. It is a fuel pump. We used the same base engine to photograph the engines for MasterCraft, Skier's Choice and Malibu. We just changed the intake plenum tops and used one engine for all three photos. Guess the guy directing the photo shoot (not me) missed that.

What is the stainless-looking cylinder, mounted vertically behind and above the oil filter?

TMCNo1
07-08-2006, 09:17 PM
TMCNo1- look at the black lines going to the front of the motor- that's where the oil cooler is. They have the usual brass fittings, too. It's next to the upper pulley (with an unpainted clamp) and is between the raw water pump and the thermostat housing.



Thanks JimN, I guess someone will have to tell what it is, got me stumped!

TMCNo1
07-08-2006, 09:23 PM
Oops we forgot to remove that before taking the photo. It is a fuel pump. We used the same base engine to photograph the engines for MasterCraft, Skier's Choice and Malibu. We just changed the intake plenum tops and used one engine for all three photos. Guess the guy directing the photo shoot (not me) missed that.



Works for me!
Now a stupid question, is the fuel pump on some engines, no longer in the fuel tank or was the pump there for test purposes?

Engine Nut
07-08-2006, 09:38 PM
It was just there because this was a show engine that we used at the Miami boat show that was originally set up as a generic Indmar model which does use a fuel pump on the engine. We just forgot to remove it when we put the MCX plenum on. MasterCraft will continue to use pump in tank and 2007 Malibus will get PIT as well although not the same system as MC uses. The Indmar versions as used in Supra and Moomba boats will continue to use pump on engine.

Engine Nut
07-08-2006, 09:41 PM
The system will be able to tolerate 10% etahnol.

will there be a problem with the new blended fuels (ethanol)

BriEOD
07-08-2006, 09:50 PM
That thing looks sweet. Thanks for sharing EN.