Trying to find info on a 1999 Riva GP 1200R3

[AsianToo]

Hi everyone - I'm new here and I'm hoping some of you used to race the gp1200. I just got a 99 gp1200 r3 and I'm wondering if anyone here has owned one, or has some background info on it. For '99 there were only 150 made. Riva wasn't that helpful with specific equipment, just too old. Thanks in advance.

[sandman7793]

What do you want to know?

[AsianToo]

How about anything and everything. My only time with skis in general is getting my 96 running and cutting my 94 and making my YouTube jet boat. Generally, what should I be concerned about pre wet test and what kind of performance could I see? Thanks

[AsianToo]

I did some work on the ski and found out some of the parts on it. It has "Buckshot" carbs with an R&D manifold. Block has been ported and epoxy coated. It has a billet head and Riva triple pipes. I'd still like to know what kind of speed these ran.

[Adam]

Hope this helps 70mph

[Adam]

The Carbs were modified to Rivas specs , Buckshots maybe . It didn’t have an R&D manifold according to the magazine test. Solas XO impeller , Advent / Riva CDI on Mod 1 Peak speed of 69.8 mph on the radar and 190 hp . I’m surprised Riva aren’t more helpful, they built these craft .

[AsianToo]

Got it fired up today. All seems good. I'll try to wet test it this week. May go to the river this wknd and get some time on it. I'll post a top speed if I go out.

[AsianToo]

Quick update - put it in the lake today. Water was flat as glass - I got it up to half throttle before it was porposing really bad. Cavitating at each hop(55 on GPS) full throttle it wanted to jump out of the water. Motor runs strong, has a good hit and wants to rpm, just can't hang on with all the bouncing. I've got to prep a single trailer then I'll get under it and check everything out. Hopefully I'll get in the water tomorrow. Pics coming soon

[Adam]

You will need to shim down the rear two mounts of the ride plate to hold the nose down . This will help but don’t go to much or you will scrub speed . It’s a fine balance between hook up and bounce . The 98 GP1200 had a longer ride plate which helps hold the nose down , an R&D ride plate works very well if you can find one .

[AsianToo]

I found out I have a Riva plate with no shims. I found a stock ride plate and I put 4 ss washers on the back bolts - about 0.160". I'll put a digital level on it before I get back out.