vented oil fill cap dry sump
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Joined: Dec 2023
Posts: 71
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vented oil fill cap dry sump
has anyone installed a vented oil cap as in UPR with a one way breather type ... wondering if this will be a benefit or cause vac leak .. reasoning is high hp hci under WOT
Intermediate
Joined: Dec 2008
Posts: 38
Likes: 2
From: O'Fallon, MO
I run a vented cap from CFM performance on my H/C/I 2009 Z06 with no issue. It has a check ball to keep unmetered air out, while venting crankcase pressure when needed. Not sure how much it helps, but it hasn't hurt.
Reason I run it is my other car (99 H/C/I WS6) was smoking a bit on decel. Adding the CFM performance cap eliminated it completely.
Reason I run it is my other car (99 H/C/I WS6) was smoking a bit on decel. Adding the CFM performance cap eliminated it completely.
Safety Car
Joined: May 2016
Posts: 4,578
Likes: 1,786
From: Erlanger, Kentucky
You could go with a Mighty Mouse catch can. There is a vented breather option but the catch can has a 1-way valve to prevent a vacuum leak. And the catch can will allow much more flow of the PCV system which is good.
