What's your compression?

Wheelaholics · Jun 5, 2014

Just curious as to if anyone has checked their compression on their GROM. I have the 160 Big Bore Kit and mine is sitting at 200 PSI

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BFox · May 31, 2015

I just tested mine today. I have a Kitaco 164cc bbk and Kitaco type 1 cam. Cold engine it was at 170psi. After a ride and letting it cool for 10 minutes it was 190psi.

RACER X · Jun 1, 2015

Take 181cc, like 195 cold

Strokd_GE · Jun 1, 2015

130cc (+1mm factory piston) with a .015 shave in the head, reshaped combustion chamber and a DCR cam tested 180psi cold

What's your compression?

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