Crankcase Ventilation - CLASS RACER FORUM

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Crankcase Ventilation

02-10-2013, 10:31 PM

Ron Gusack

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Join Date: Feb 2009

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Re: Crankcase Ventilation

Quote:

Originally Posted by Frank Castros

I've seen engines with a shop rag taped around the valve cover breather tube. What's up with that?

Engines with lots of blow by build pressure in the crankcase and if there's enough, a mist of oil will be pushed out of the valve cover breather. The rag was supposed to catch the oil. I haven't seen that done for many years.

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