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Turbocharging Seadoo XP

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I have a 1994 SeaDoo XP I would like to put a Turbocharger on. I have the whole winter to put in a new engine and other accessories. I really want to build a Pursuit Marine Drive to run off the excess engine heat when needed and I also would like a working instrument panel. Does anyone have any links for this or any kits or tips? Also, is there anywhere I can harvest heat from the engine to boil water? If there is can you please tell me if it will stay hot and if it will provide enough heat. Is there anyway I can pressurize the steam? The last thing is that I need a source of small bubbles and I was wondering if anywhere on the engine can do that or if I should figure out a way to pressurize the steam and create bubbles from an auxiliary device since the bubbles and the steam are travelling to the same place. The dive will sit in the bow of the jet ski where I have the most room. I will have a copper pipe deliver the steam to the bow to the drive. The drive throttle will always be at full from control by a toggle switch.


To explain this as best as possible, The engine is ran until enough heat is generated causing a green light to flash from a heat sensor. When that green light flashes it signals the engine is ready to start the Marine Drive. The marine drive is started when a toggle switch is set to the on position. When it is set to the on position water will begin to be suctioned into the steam generator, compressed, then shot into the drive itself with small air bubbles. Water is always rushing through the drive so I must make as aerodynamic as possible. The drive itself will be build from titanium. When the steam enters the drive it shoots out the water almost like the jet ski itself. That process is continued until the safety toggle switch is turned off. The toggle switch panel will have 2 switches 1 with a safety cover. The first is the drive safety and the second is the drive itself. The safety works like a boat switch connecting to the wristband. It stops the pump so water cannot continue to flow. The tube where the water is heated will be a copper tank, where the water will be boiled, pressurized, and shot into the drive.
Thank you so much. I know It's a lot but please try to answer as best as possible.
-John
 
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A turbo on a two stroke, especially a underpowered 94 XP? Good luck with that and best of luck. Just buy a 787 XP and enjoy.
 
Are you talking Turbo or Pursuit Marine Drive? They seem to be two completely different things. As a toy engineering project, it may be cool, but if this is something to ride, I agree with Miki.

But to answer your question, these have open loop cooling systems at low pressures, so boiling water and creating air bubbles is not going to happen without a ton of work and you likely wont have the space to do it.
 
Turbocharge the engine. Add a Pursuit marine drive at the back for extra power. I have the design for the marine drive. It should fit with all my extra room. I will still try. Wish me luck.
 
i'd love to see the results.

I've ridden a turbo 4tec conversion and its SCARY, as in I never went full throttle, I backed down around 85mph on gps then went back to the ramp because I thought I had chit my pants.
 
Wow! What speed do you think a turbocharged 657 1994 SeaDoo XP Would go with a Pursuit marine drive(300hp) aiding the speed? Probably too fast... Do you know the legal watercraft speed in Colorado? If I were to go full speed I'd probably need an ocean!
 
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So where in the world is the 300 HP coming from? NOT recaptured heat... A 94 xp with a 657 will do about 45. With a turbo and tons of pump work, you may get it to 60. So why spend that kind of money. Just get a 787 xp and pipe and prop it. Cheaper and way more bullet proof. No idea about the bubble drive though. Sounds like vaporware... Hmmm Colorado haze?
 
The reason they sold it was because it was never tested and never went anywhere. It was just a design theory from what I read. It was going to be a revolutionary recreational drive system that never materialized.

As for the turbos they have been tried on two strokes for years with very little success and lots of burnt pistons. The 2 stroke does not lend itself to forced induction by design since the intake and exhaust ports are open at the same time bleeding off most of your boosts pressure.

You have a big uphill battle ahead of you but I'll keep the popcorn hot.
 
Mikidymac, Turbo on two stroke has been used for years and has been successful. Stock sleds are at 160 HP with 7 to 8 lbs of boost bringing up to 220 to 225 HP. Here is some information and check out the video. See the link below.

https://www.facebook.com/TurboboyzTurboPerformance/ or enter [MENTION=11427]turbo[/MENTION]boyzTurboPerformance in the FB search box.

David
 
Mikidymac, Turbo on two stroke has been used for years and has been successful. Stock sleds are at 160 HP with 7 to 8 lbs of boost bringing up to 220 to 225 HP. Here is some information and check out the video. See the link below.

https://www.facebook.com/TurboboyzTurboPerformance/ or enter [MENTION=11427]turbo[/MENTION]boyzTurboPerformance in the FB search box.

David

Well there you go. Being a poor California boy the only snowmobile I have ever seen was going up a ski slope.

You are still going to have the challenges of oiling the turbo and the wet exhaust issues. I guess like with most things with enough time and money it could be done but why not just buy a 787 X4 or even build a 951 X4 for less money.
 
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I'm trying to find a way to hit 100 mph on a Jetski... I do have a dual trailer so I could buy another. Oh yeah, Thanks dps for the info!
 
You won't do it on any of the 90's hulls and especially a 94' XP. You would need one of the highest efficiency hulls and above 400 HP. Those that have tried it have spent upwards of $20,000.
 
100 on an X4, a new rider, and an experimental drive. What could go wrong.... And yes, you will likely be breaking some kind of law.

But on the brighter side, you will be featured on the Darwin awards.
 
it would be even cooler if you added a waterskiing kitten on the back during the trial run.

just sayin....

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even safer... let the dog drive.

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Just use Google. It is easier than than talking about fantasy drives. And as far as the Scania the 3,600 lb weight and 2,300 max rpm might be a little counterproductive in a PWC.
I am out till reality returns.
43c59a32c74b97b5507b52a41c34eeb9.jpg
 
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