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Old 09-19-2009, 10:00 PM
CSX4279 CSX4279 is offline
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Join Date: Mar 2005
Location: Delray Beach, FL
Cobra Make, Engine: Shelby CSX4279, aluminum body,427 cast iron medium riser side oiler
Posts: 5
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Default excessive blowby

Maybe you FE wizards can help on this one...newly rebuilt cast iron 427 sideoiler. Pentroof (non vented) valve covers..breather oil cap on oil fill tube at front of intake manifold..vent tube at manifold rear to "puke tank". Tank has both oil pan return AND vent road draft tube. I get oil leaking from draft tube AND liquid oil in puke tank.....being fed up with constant oil on my garage floor AND oil all over the chassis, I blocked off the puke tank (keeping it for looks only on CSX4000 firewall) and ran a PVC valve to the carb. Leaking stopped but when idling, it's like a five alarm fire with all the exhaust smoke and stink. So much so that the sidepipes actually had black LIQUID oil in them. I might add that I am running a solid roller and as a result the intake valley baffle pan could not be installed due to lifter height.....
Any ideas on how I can stop most of this blowby without changing the non-vented valve covers OR do I have no choice? Motor only has 1000 miles on it.
Thanks Bob
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