- May 15, 2008
I;ve tried some of the mods I read about on this forum, including removing the base gasket, from the bottom of the cylinder, to increase compression. I had to use a dremmel bit to trim the edge of the cyl. head for piston clearance, I also enlarged the top of the exhaust port and took a little material of the bottom of the intake ports. I left about 2" of the muffler baffle tube remain inside the muffler,and drilled 2 _ 1/4" holes in the cap at the muffler tip. The results were pretty dramatic,mid range torque, is way up . the throttle response is very quick, I also put the carb. metering rod in a drill to spin it while pinching some 360 grit sand paper around it to put a more slender profile on the needle. My bike is still pretty quiet, and so far relieable the only thing else I would do is get a better carb . Just make sure if you deleat the base gasket and use sealer, test fit your cyl. head so the piston doesnt smack the head!