Mm 700 Power Inc jetting for 8,000-10,000ft.

Mountain Mod 700

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Joined
Feb 7, 2018
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3
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Wisconsin
I have a 2000 MTN Max, ported and polished engine with power inc end dump pipes and air box mod. I know these pipes run at 8500 rpms. I need an idea for jetting at 8-10k feet. I tried 138.3 PTO and 140's but won't pull the rpms, I tried nocking weight out of the primary but didn't change the rpms. Need some advice.
 

primary spring might be too stiff for your clutching. i am by no means a clutching expert but it might be asking for a softer spring. are you using power inc clutching reccomendadions as a base without the porting?
 


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