Originally Posted by
nipmuck2
I have a McCoy "60" Red Head racing engine that is frozen. I also have a McCoy 35, seems and looks new (frozen) McCoy 35 used (frozen) and a McCoy 29. How can I loosen the varnish without hurting the engine. I will take pictures later.
To loosen the engine remove the plug --- take a heat gun and heat the cylinder until its hot--turn the prop nut and the engine will free up. Let it cool and then oil it lightly with a high quality synthetic gun oil---I have done this countless times. Good luck!