Recent content by rsonnicksen

OK. I should have known that. It is an open header. The stock muffler kept vibrating loose because I've got the engine off the mower frame (which the muffler mounted to). I'll rig up a pipe. Diverging if I can find one. In the meantime, I put a scope on the P-lead of the ignition system...

Nope. Was an air-vane governor, but I removed it.

Hi, Totally new to this site so bear with me. I read through some of the DuraForce related posts from several years ago, but not seeing what I need. I'm running a stock LawnBoy DuraForce engine upside down (flipped carb over). Under no load I can't seem to get more than about 4000 RPM out of...