I decided to pop the head off my Grubee today. I took a very small amount of material off the combustion chamber then smoothed it all out. There was a ridge in the chamber. Using my Dremal tool I ground the ridge smooth. The spark plug is slanted on this motor so I ground all the showing threads down. Also port matched the intake and exhaust gaskets as they were too small and protruding into there respective tracts. I think the idle improved a little and the throttle response did a lot. I also sanded and polished some of the fins on the head for looks. I don't have any pictures because I was too excited to do the job and put it back together. Any other light Dremel mods?
Anyone else do these mods? How do yall think it did on yours? I would like to know.
