crankcase pressure
11-13-2017, 10:23 PM
#1
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crankcase pressure I have a SBC just installed a new set of aluminum heads. After a 500 miles trip the engine starter pushing oil out the valve covers and pit stick tube . Just running the engine at idle you can fell the pressure out the valve covers. Compression test shows 150 on seven and one at 145.However cylinder leak down test shows 85%
Last edited by lowpro47; 12-25-2017 at 09:43 PM. Reason: I found the icause of my problem, seven out of eight top compression ring were cracked in two or three pieces. Time for a rebuild.
12-25-2017, 07:33 PM
#4
I just got a deal on a dual catch can set up from a member here. I had the same problem. But it only slung the oil at high rpms. I figured it was a mixture of pressure/rocker arm motion. So I puts a flat plate over the breather hole and threaded an -6 fitting into it, and ran a line from that to a catch can with breather. It's basically a remote mount breather. And since I got two cans, I used the other one for the pc. Been on for 2 weeks and no messy valve covers and no oil in the intake and on my plugs. I just verified this today.
Last edited by startingstock; 12-25-2017 at 07:39 PM.