valvetrain

Hey guys, I'm building a Predator 212 for a minibike. I'm going to be running 14cc heads, flat top piston with .020" lower compression height, and a billet rod that's .020" longer to account for the lowered compression height. I plan on running 1.3:1 ratio rocker arms and I was wondering what...

I picked up a pair of GX340s for $50 and spent yesterday stripping one for parts and fixing the other. They're both from generators, so I'll have to modify the crank or make an adapter and mill off the "bellhousing" for use on something else. First impressions: I like how much bigger and...

Currently running 18lb springs 1.3 stamped rocker, gx200 head gasket on a genuine gx160. I already have the billet flywheel and rod, I am now looking for more rpm. My thought is start with valve train before major hp stuff. That way the valvetrain should match the capabilities of the rotating...