Thread: For a stock 02 gp1200r
09-04-2006, 10:51 PM #1
For a stock 02 gp1200r
What would be a good prop for a stock 02 1200r. I would like some low end power. ski is completly stock. Really dont want to mess with relialablity. Ski runs great. Nice not to worry when wave jumping. Anthing else good for wave jumping also intake grates? so on
09-04-2006, 11:07 PM #2
Biggest reason for holeshot slippage is the pump shoe (reinforce it). I used a 13/19 solas before going big bore. Are you sure it's the prop?
09-04-2006, 11:12 PM #3Originally Posted by RonG
09-04-2006, 11:38 PM #4
Solas 13/19 impeller, Riva or R&D 1200 double bar grate and a pump plug kit and seal the pump, also step the stock sponsons. Reinforcing the pump is a good idea; However if you are running a stock engine you may not have any problems.
09-05-2006, 06:56 AM #5Originally Posted by spud
09-05-2006, 07:58 AM #6
just to add another option a Skat Swirl impeller will have a better holeshot than a Solas but it will be a couple mph slower on top
they offer a version for the older style pump and they also offer a version for the 05 pump
adding the 05 pump will also further improve your holeshot
09-05-2006, 11:12 AM #7
- Join Date
- Jan 2006
- Texas City, Texas
Let's get him up to speed guys.
The first "must do mod" on a GPR is to seal the shoe and pump area. Even with the stock impeller, this mod will help to minimize cavitation. Make sure all of the cavities in the shoe are filled either with a Pump plug kit (PPK) or with silicone. Completely seal between the shoe and transom plate. Recess the shoe as far into the hull as possible. Do a search on this, as it is extreemly important because a sealed shoe/pump effects the performance on virtually any "performance" mod you do on a GPR.
Get a 13/19 Concorde as this impeller will also improve hole shot and allows for a better top end... even with a stock engine.
As you get closer to 67-68 mph, safety becomes a serious issue using a stock intake grate. As you decellerate, the GPR will take a very dramatic turn usually to the left, ejecting and potentially hurting the rider. Adding an R&D 1200 double bar intake or the RIVA intake will all but eliminate this issue with a speed loss of .5 to 1mph. The safety feature is well worth the speed loss.
With out doing any engine mods, your GPR will just plain perform better with the mods other forum members have laid before you.
Hope this helps
09-05-2006, 11:16 AM #8
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