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Old 09-16-2016, 02:24 PM   #15
petehoovie
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Default Re: Tech: Cheap and easy pcv on your 49-53 ford flathead v8

Quote:
Originally Posted by 51 MERC-CT View Post
The primary function of the PCV valve is to close off the back flow to the crankcase in the event of a back fire. Not to regulate flow.
Looks as though the JAMCO unit just evacuates any blow-by out of the crankcase and reroutes it to the exhaust via the intake manifold using vacuum to do so....
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