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ZachDaddy
04-25-2012, 08:02 PM
How does someone really know how much HP your engine produces? The manual says that HP can vary from one powerplant to another up to 10 percent.

Is there a way to increase horsepower on the MC engines that is inexpensive?

east tx skier
04-25-2012, 08:05 PM
Which boat do you have? You can easily and inexpensively bolt on horsepower to older, carbureted boats.

The way to know what you have is to have your engine dyno'd.

ZachDaddy
04-25-2012, 08:19 PM
2007 X15 with MCX motor and Acme 1285 prop. We are running 2200 pounds of ballast and I do not have a wake plate so the boat struggles to get on plane if we get to heavy.

We burn a ton of gas with full thottle holeshots, so I'm looking to possible solutions like an Acme 2305 prop thats 15" x 12" w/1.05 cup. The wake plate would be the quickest fix but its to expensive at 1500 plus install.

east tx skier
04-25-2012, 08:20 PM
Based on anecdotal evidence, horsepower is probably close to 311 hp not considering what is lost to the exhaust tips. No idea how to increase the horsepower.

bzettler83
04-25-2012, 08:29 PM
Inexepnsive? Probably not.

I am sure you could port the throttle body, have some one re-program the computer, but short of that you are stuck. Everything else would likely cost a pretty penny.

I have learned over the years, most inexpensive upgrades make such a small difference they arent worth it.

93Prostar190
04-25-2012, 08:33 PM
The wake plate is not a bad option to help the bow rise.

Or you could shorten the rope and carry 500 less lbs. :)

Good luck.....

AZX9
04-25-2012, 08:35 PM
2007 X15 with MCX motor and Acme 1285 prop. We are running 2200 pounds of ballast and I do not have a wake plate so the boat struggles to get on plane if we get to heavy.

We burn a ton of gas with full thottle holeshots, so I'm looking to possible solutions like an Acme 2305 prop thats 15" x 12" w/1.05 cup. The wake plate would be the quickest fix but its to expensive at 1500 plus install.

Your first check should be what rpm you are running at wide open throttle. The MCX should be in the 4800 - 5200 rpm at WOT. For more pull and hole shot you would want to be on the high end. Effectively making it easier to spin the prop with a lower pitch prop. If this is in line when ballast are not loaded then you may need to drop a pitch or two to compensate for the extra load. Of course you will loose top end and your cruise speen will be screaming RPM.

madcityskier
04-25-2012, 09:34 PM
Why not throw more weight in the bow and call it a day?

Jeff d
04-25-2012, 09:49 PM
Something's not right. I'm running 2,700 lbs in an '00 230 VRS (same hull as 1st gen X30) and with the 330 HP LTR and the stock prop it does ok. It doesn't jump on plane "Like a boss" or anything but I don't even use WOT to get there. My boat is about 250-300 lbs lighter (dry weight) but I'm hauling another 500 lbs of ballast + people weight (3-5 adults usually). You're supposed to have 20 more HP too.

So, I'd say either your engine isn't running right, you have weight distribution issues, or your prop isn't right.

mikeg205
04-25-2012, 09:58 PM
here you go... have at it.... http://www.youtube.com/watch?v=cgBc0o73CyM

this awesome - pricey but awesome... go to a local mechanic to have the engine checked....you need an engine guy...someone who can test the motor...I have 2 guys I can go to...but luckily don't have to.

2200 pounds plus people + 3600 dry weight no gas.....plus gear... I think you're overloaded...and under powered...my .02...

vision
04-25-2012, 11:21 PM
Why not throw more weight in the bow and call it a day?

Agreed. If the motor is dogging with your set up, then you may want to move more weight forward or have the engine checked.

I have your motor in a larger heavier boat (X-star) running 2500lbs ballast and it gets up easily.

mikeg205
04-25-2012, 11:25 PM
Agreed. If the motor is dogging with your set up, then you may want to move more weight forward or have the engine checked.

I have your motor in a larger heavier boat (X-star) running 2500lbs ballast and it gets up easily.

How are you propped compared to original poster?

snork
04-26-2012, 09:05 AM
Vision what prop you run'n?

vision
04-27-2012, 12:19 AM
Vision what prop you run'n?

With the original OJ 14.25 x 14 prop, similar to the ACME 1285, the boat had minimal to no issues with 2500lbs of ballast.

I have actually propped our boat down to 14.75 x 13 as it allows us to run a little more ballast from time to time.