39cc air cooled Ported and polished exhaust, tranfers, reed cage and everything mached. Modified expantion chamber tuned for 12/13.000rpm but engines tops out at 13.500rpm at moment because Im using lots of oil in the mix. when running 40:1 it tops out at 15.000rpm not under load. Ported Carb. and high flow filter. the engine is now all apart waiting for new rings and a SUPER porting job done by me, the one in the video is just a mild porting, the one now...WILD PORTING! thanks for watching
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