650/X-2 best impeller mod. ski

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dfw
A 650 Solas "I" pitched down to match the engine or a modified 750 concord 11-16. A modified Skat 750 big hub will be best for rough water.
 
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dfw
what about skat 9-17

A 9-17 will be close, maybe even perfect depending on the port height, compression, and pipe length. 650s become very sensitive to load once the operating RPM has been raised. You need to be able to tune the pump so that it gets on the pipe quick enough.
 
Location
dfw
lm gonna go real aggressive on the porting
l just want it to pull hard to 52-3
lm going to use a dales cdi atleast

Im using a factorypipe

sounds like a moddified 750 bighub

Stop while you're ahead and buy a big pin 750 engine. A stock high port 750 with that 650 Factory Pipe will make as much power as the hottest race gas 650s, with much better reliability.
 
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