Quote:
Originally Posted by VENICE BOY  Yep, It's definitely oil dripping out, not gear lube.
I thought a bad seal would cause a lean condition too; but the plug is a perfect color, the engine has lots of smooth power & it idles real smooth...
I also thought the hole I drilled would make it run bad... but it didn't. It's still one of the best running bikes I've ever built.
I'm at a loss to explain this one... this goes against everything I know about these engines!?!?  |
Here's a theory: (just a theory) If the crankshaft bearing is the sealed type, the one with the plastic or metal cover over the balls and inner race, could that be enough to seal off the crankcase against the atmosphere? The bearings on the one I had the seal go bad on appeared to be open, unsealed. The balls and race were visible behind the seal bore. Oh, wait a second...if the bearing seal held back the crankcase pressure how would it leak oil? Duh...told you it was just a theory, and not a very good one. Sorry
Tom