My GPRXP build

[John's truck]

So I'm starting this build thread but the ski project is already progressing. I bought an 08 RXP-X 255 that had hit a bridge. I got a lot of what I need from that. Unfortunately it hydrolocked, bent valves and a rod, and the cylinder bores are rusty and the gauges don't work. But I did get the ECU, injectors, wiring harness, X supercharger, tons of stuff.

I also bought an 01 GP1200R from my buddy with a thrown rod. The blue fairing are pristine and I put them in the back seat of the Jeep. He also included a GPRXP engine mount kit and midshaft/bearing that he had bought used.

[John's truck]

So I got the hull gutted, bought the pump tunnel reinforcement and glued it in with anchor adhesive

[John's truck]

Got some aluminum pipe and fitted my Seadoo gas tank. I put a new filter under the pump. I know this is probably all stuff you guys have seen 100 times. It's my first time though

[John's truck]

Filled the transom plate and shoe with Flex Seal. I fitted the transom plate, opened the hole for VTS and made a small bracket. I spaced the VTS nut using a PVC electrical conduit coupler I shaved down. Yes I cleaned the old silicone off the transom plate with a wire wheel and got it super clean before applying new silicone.

[John's truck]

I'm going to be using the 08 PX water box and factor exit elbow. I grabbed the free-flow J pipe off my RXTX, a piece of the PX's factory exhaust hose, and bought a silicone 2.75 to 3.5 coupler 90. I also bought a 1' piece of 4" wet exhaust to connect the manifold to waterbox. Its in the garage, not in this pic.

[John's truck]

I made some brackets for my relief valves, drilled and tapped the setback and epoxied the barbed fittings in place. I got a 50mm M6 stainless motherboard standoff for my steering cable extension. I'm using a SHO/SVHO steering nozzle. Also, I drilled the trim ring a little lower and used my Seadoo steering cable ends for the VTS. I ordered a piece of M6 all thread to make my trim extension rod. Still waiting on that.

[troyheb]

Good looking job so far. You plan on keeping the PX motor stock?

[John's truck]

Good looking job so far. You plan on keeping the PX motor stock?

I'm getting an engine out of a 215 and we're going to do a freshen up rebuild with ARP hardware but otherwise OEM bottom end. Supertech valves, titanium retainers... then put my X charger and everything on it. But yeah, its going to be stock X charger, 42 injectors, stock tune, etc. Just a bone stock 255. I'm going to run the Yam boat prop (16/23?) and hopefully I'm not all over the rev limiter

[John's truck]

Stainless all thead I ordered was delivered so I mocked up my trim rod. I dont know if VTS is all the way in or out so I can't cut it down to size yet

[John's truck]

Mocked up the RXPX bars on the ski, then made a bracket for the DESS post, roughed it up then painted with enamel then truck bedliner. I had to drill and tap the broken bolts in in the VTS switchbox

[John's truck]

Made a reinforcement plate for the front intake grate bolts out of the bracket for the X intercooler

[John's truck]

Upgraded the ride plate inserts to GP1300r plates

[John's truck]

Cut and epoxied some plates for the pump shoe. Its since been drilled and everything's glued in place

[John's truck]

Built a battery tray out of aluminum. Used old Seadoo OPAS bushings for the rear spacers

[John's truck]

Shimmed the stock trim tabs. 2 washers on each bolt. I might take one out later, we'll see