Originally Posted by
the Wasp
hey guys. I found the cylinders matting deck on my 91's "lower case" is marked up a bit. how would I clean it up safely. I have some 400 grit DA sandpaper. I could stick it to some thick sheet metal and clean it up. but I'm worried it won't remain flat. what you all think?
Jim
You are talking about the top face of the crankcase (?)
One soft swipe with a clean , second cut (fine) 10 or 12 inch mill file should do it. Just need to level out any raised burrs. Most people over-do it badly especially when they use sandypaper.
Yep Dave, they are different and many folks get crossed up. Often you can spot the ill-fitting squished out push rod tube seal.