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They do 70plus mph with a na motor . I would be looking at a boost leak or at the clutch ..

Mine will be rebuilt when i get time . Motor is built

Mine ran 95.5mph with a boat prop @8650 rpm. I have a sho pump now , think i need a 15/24 for similar results . Nice work mate

Turbo ski reliability is relative to the motor build and boost and revs . I have done a 170mile ride in a day , 16psi and 8500rpm it was doing 92mph . 07 siemens ecu with a LB turbo flash . It won...

My turbo gprxp was built with a basic motor , valves , springs ,retainers ,pistons and balanced . 95mph at 8650rpm , i did 170 miles in a day . GRF kit is jacketed . Dont need a waterbox , you need...

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Still there TJ ......

Apparently some big mouthed idiot was telling everyone how so many stock skis do 100mph now , boats that do 100mph need full captuals and just about fire suits where as jetski just need a helmet and...

With my gprxp i have a few pump setups now , i have a trusty HO pump with a boat prop , it cavitates like a pig but at 30mph it pulls like a train . And a sho pump with a 17/27 skat that is similar...

Great work from you 2 crazy blokes . This is what we expect from you .. love it .

Great for tuning

If your speedo tops out in MPH you can change dash so it reads kmh . I have seen mine read 97mph ..

Got a few vouchers from santa ? Will they do ?

The older one is faster and when setup correctly , handle better

Nice to see them still getting built . What Riva plate did you get ? The old style ? The one the same as R&D plate is the one to get

Hahaha ... completely different adrenaline rush .. nothing beats the midrange acceleration of the gpr , the rxtx feels slow in comparison, definitely not slow though .. the B2B was run today here in...

If my workload slows abit , i will have time to assemble the motor , i could get it going in a few weeks if i could but im thinking of respraying it too another colour , its looking like a bit of a...

Locally buddy , joe at southern jetski cleaned it up and assembled it for me ..this was from a gti130 with 385hrs

441530, got the head done , supertech everything , seats cleaned up , new guides , etc .

I would listen to WFO .. he is the master .. nice work hitting 90mph ..be careful of it stuffing

I haven't broken any as yet .... touch wood .....

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Nice light lacey flywheel .. thanks again Evan .. legend ..

Im not too sure on how the yamaha 1800 fits the gpr , but i think it uses all the FX midshaft and driveshaft . is it possible to use the gpr midshaft and fit the fx coupler to it ?

sold ... :p

I have one on my 18 . Stock it was seeing very little oil every 4 tanks . It has 26hrs now and its been flashed . So that may change . As the GRF man has said ... its a ace engine problem and no...

Great write up kevin and jerry . I think they need to be tested in what ever way is faster .. with or without launch control . As the skis are manufactured that way . Really thats like saying take a...

I have run 22psi for 20 minutes wide open through an old 185 mani that is bolted ... lol .. i wouldnt trust a repaired one