Originally Posted by FREAKAH
I wouldn't have used it on the piston and the inside of the sleeve.
I did not polish the inside of the piston sleeve and did not touch the piston at all.
Well... I did wipe the piston so that it wouldn't be so oily to handle - same with the inside of the piston sleeve - but not too much.
The problem was the build-up on the crankshaft. A lot of people said it was abnormal - either discoloration or rust. It didn't wipe off, so I just figured I would take it off
Josh Cyrul's engine maintenance tips (http://www.cefx.net/tips/nitro/maintenance/
) says it's okay to use scotch-brite and aluminum polish. "If for any reason you have rust or build up on the crank it is a good idea to clean it up with the Scotch-brite and polish it as it will help your engines performance" . I figure he knows what he is talking about.
But you are quite right about a number of things. When I turn the flywheel by hand, I can feel something is different. I lubricated everything before I reassembled the engine and also put about 6 drops down the glow plug hole after I was done. I've been hand turning the engine quite a bit since then and it's kinda "notchy" at TDC. The engine has always
been tight at TDC, this might be okay. ... maybe.
I'll find out how bad an idea this was tomorrow morning when I fire up the engine. If it blows up on me, I'll be stopping by Hobbietat at lunch time on Monday.