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24
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2/20/2018
Location
Mount Clemens, MI
US
Anyone have luck running a higher compression piston in their 15 crf450. Pros and cons would be great! Also, I’m not planning to run race fuel, I hear that plays into the equation. Thanks in advance to all recommendations.
Wiseco racers choice was a heavier piston. I'd go Cp x piston again.
Pros is more power.
Cons is you need race gas. At least a 50/50 mix.
My 450 has a CP 13.5, stage 1 hotcams, and a tokyo mods remapped ecu and it wont run on pump gas correctly - even before the cams and remap. Full race gas only in it.
The 250F Has a wiseco in it and it runs ok on pump gas, but im not going to be running pump gas in it regardless.
The Shop
I'd suggest a vortex Ecu instead of the cam. My bike runs strong.
Have you had your bottom end apart yet with the recall. I put a pro x crank in at that time which weighed the same as stock( dare say it comes from the same Japanese manufacturer) and I had the run out adjusted.
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