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XfireZ51 · 01-27-2020

I’m not sure I’d want to block off the crankcase vents. Of course there is the issue, as Marc has described, of a mismatch between cylinder head and IH vents.
But I recently went through a similar exercise. My solution was to use Permatex #2 to seal off the vents from leaking oil into the #2 and #4 cylinder head ports.
This is similar to how I also seal off the coolant ports at the front of each head preventing coolant from seeping into cylinders as well.
Frankly, it would be great if a groove could be machined in the head and IH for use of an O-ring.

01-27-2020	#3
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,686	Re: Injector housing oil leak I’m not sure I’d want to block off the crankcase vents. Of course there is the issue, as Marc has described, of a mismatch between cylinder head and IH vents. But I recently went through a similar exercise. My solution was to use Permatex #2 to seal off the vents from leaking oil into the #2 and #4 cylinder head ports. This is similar to how I also seal off the coolant ports at the front of each head preventing coolant from seeping into cylinders as well. Frankly, it would be great if a groove could be machined in the head and IH for use of an O-ring.