How many RPM's should an Ultra 150....

[Captcasey]

How many RPM's should a stock 2000 Ultra witha solas 15-20 impeller turn on smooth water... downhill?

Thanks

[FastUltra]

Re: How many RPM's should an Ultra 150....

On an aftermarket tach I would say a stock Ultra with a 16/20 should turn between 6750-7000 RPMS. Its very hard to say some hulls are beter then others some engines have high compression numbers. But around those numbers is where you should be.