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My buddys 800hp Seadoo

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Old 04-17-2008, 11:07 PM
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The pump intake is gonna create incredible drag.
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Old 04-18-2008, 10:20 AM
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Hey CNC, any way of getting some better pics of the engine compartment? The way the 3rd pic looks i cant see any way the stock pump would work since the motor is in the way. And to be honest the pic showing the engines almost looks kinda photo-shoped in reguards to that prop shaft you can see.... i take it there has to be some sort of gearbox involved in this since the engines are mounted inline and the prop shafts are off-center???
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Old 04-18-2008, 02:12 PM
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Wally,
The next time I get down to my buddies shop I'll shoot some more pics. No Photo shop for sure. I included a couple more, still from early, one of just engine in mockup position and the other of the of the whole Seadoo sitting on his horizontal boring mill, drilling holses for the propshaft tubes.
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Old 04-18-2008, 02:36 PM
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it seems like it would be nearly impossible to control this thing at speed unless you can somehow synch the engines together. Get a few more RPM's in one engine than the other and you're gonna be thrown.

Cool project though. good luck and be safe (relatively).
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Old 04-18-2008, 03:16 PM
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Could someone please rename this the

"Darwin Awards Thread"
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Old 04-18-2008, 03:22 PM
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Quote:
Originally Posted by Wally View Post
Hey CNC, any way of getting some better pics of the engine compartment? The way the 3rd pic looks i cant see any way the stock pump would work since the motor is in the way. And to be honest the pic showing the engines almost looks kinda photo-shoped in reguards to that prop shaft you can see.... i take it there has to be some sort of gearbox involved in this since the engines are mounted inline and the prop shafts are off-center???
Seems like a waste of (2) perfectly good 260's.

I was thinking the same in regards to photo-shop becaues in the first pic the size of the rear motor seems out of scale to the jet ski. (motor looks smaller than what one actually is.) After seeing the larger pic in the shop though, it doesn't look like the average 2-seater jet ski.

Here's one that was done awhile ago with a single 2.5.

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Old 04-18-2008, 04:24 PM
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Quote:
Originally Posted by WILDMAN View Post
The pump intake is gonna create incredible drag.

It's blocked off. You can read all about the whole project here. This guy works for Reggie Fountain.

http://www.greenhulk.net/forums/showthread.php?t=47449
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Old 08-07-2008, 07:16 PM
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So has this one with twins hit the water yet?
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Old 08-07-2008, 08:58 PM
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400hp V6 merc?.......dunno about that
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Old 08-08-2008, 11:55 AM
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400hp V6 merc?.......dunno about that
LOL,
A good 2.5 on fuel will make 380 flywheel hp. Those certainly are not "good" motors.
300 is more realistic.
Also he has one setup with a horn, the other with a Smilin Jacks AMS intake... those are going to be a bugger to sync... neither will accelerate the same, make the same power at a given RPM, or consume the same amount of fuel.
The AMS motor is going to be a pig, as they have no vacuum resolution for the ECU to read vacuum in the midrange.
IF, he is making 300hp a motor, that bugger is going to consume 60 gallons an hour!... or more.
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