My friend Ricky just got a new 6.5HP OHV engine at Harbor Fright and this is a big upgrade from the old 5HP B&S from 1996 that wasn’t OHV. This new engine really get the go kart moving, and the only reason it is doing burn outs is because the clutch engages to late, and he hopes to get that replaced with a new one soon. But this thing really gets moving. and he has not hooked up the throttle cable to the peddle yet so that's why hes pushing the throttle with his hand. But i hope to get more ...