Thread: GP1200R rev limiter issue
06-13-2009, 01:52 PM #1
GP1200R rev limiter issue
Heres a quick rundown on my ski:
Free Flow Exhaust
Pro-Tec 150psi Head
800R intake grate
nujet 6.5 impeller
5hr old Pro-X Pistons
At the beginning of the season, my ski was running great, no issues at all
Then, about a month ago, one of my pistons chipped (they had 250hrs on them) and luckily did no cylinder wall damage. So, I replaced all 3 pistons with Pro-X replacements.
Since the rebuild, my ski hits the rev limiter (Im assuming this, no tach) when im running WOT. Also, there is no longer a smooth transition from the power valves being closed to when they open. It feels like turbo lag, all of the power slams at once (around 4500ish RPMS) Currently, my assumption is that since the engine has new pistons/rings it is making more power.
What should I do to keep it from bouncing off the limiter? A new impeller? If so, which one? Thanks.
06-13-2009, 07:49 PM #2
If you are hitting the rev limiter check to see if you have a bad impeller or a big gap between the impeller and wear ring.
06-19-2009, 03:27 PM #3
There was a ~.020" gap between the wear ring and impeller. Also, the impeller was looking a bit rough. Needless to say, I replaced the impeller (with another nu-jet 6.5) and the wear right. However, the problem still exists - It's hitting the governor.
Any input would be great, thanks.
06-20-2009, 05:27 PM #4
06-22-2009, 05:41 AM #5
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