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Author Topic: Oil splash at rear of intakr manifold  (Read 2007 times)
Small Block
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Posts: 107

Location: Perth, Australia

« on: November 12, 2018, 07:44:18 am »

Hi guys,

I run a vacupan system, whereby both VC and that rear PCV port is plumbed into a catch can and then out to the exhaust. I have removed the PCV check valve, and just have an open T-fitting pushed into that rubber grommet. Both VC are baffled, but one (RHS) is at the rear of the VC.

I think the vacupan is sucking a heap of oil. I used a qt in one race meet.

What I think is happening is, under hard acceleration while racing, oil is being pushed at the rear of the lifter valley, and being sucked up through the now permanently open PCV port. I didn't have one of those little  mesh filters that go in there, but have now, but haven't tested it yet.

Is my theory right? Can a lot of oil be pushed back there under hard acceleration? I have the TFS Box-R and I know they have a baffle there, but it may not be enough.

Any thoughts?
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