So for the second time I popped the front and back seal on my intake. The first time I thought that I hadn't put down a sufficient amount of RTV, so I pulled the intake a couple weeks back to have a look. I had plenty of RTV but what is happening is that at high RPM apparently there is too much crankcase pressure and it is pushing oil out the front and back of the manifold.
I do have a pcv in the drivers side cover and a breather in the passengers side cover.
I did a leak down test about a month ago and all cylinders tested out good, but you can hear air getting past the rings. I changed the valve springs out a week or so ago and aired up the cylinders and there is enough air getting past the rings where you can feel it coming out of the breather and pcv holes....but no different than when I did the leak down test.
So...I can't have my motor pushing oil out the front and back seals of the intake, not gonna work for me. Unless I can improve my pcv somehow I think that I'm going to have to yank the motor and install some new rings. If memory serves me correctly we used KB hyper pistons with standard rings. I'll have to talk to my buddy and see if he remembers any better than I do.
The specs on my motor are:
-350 4 bolt block bored 30 over
-stock 5.7 rods
-KB hyper flat top pistons
-The rotating assembly was balanced and the block was clearanced and zero decked
Assuming that everything is good in there what kind of rings would I want to go with? I'd like to run something proven that will have less blowby than the current standard rings....some kind of file to fit rings?
Anywho, the rest of the specs on my engine are:
-Edelbrock performer RPM heads 70cc
-Crower solid flat cam .242/.248 .482/.504 114/110
-Holley Stealth Ram intake
-30 lb injectors
-GM CC small body distributor
-Thorley tri-y headers
-2.5 x-pipe and 2.5 exhaust
On a side note, I made my first 12 second pass the other [email protected]