Thread: Intake gaksets blowing out....

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I have not put any type of gauge on the crank case pressure, but I have blown air through the breathers and lines to determine that they are functioning. While excessive crank case pressure may be the source of the problem, I did have a severe crank case pressure problem with a sbc a couple years ago. However, the difference was, that it would constantly blow out oil pan and timing cover gaskets.....not intake gaskets. I am in the process of removing the intake, at the moment. I suppopse I could put the original intake back on the motor, and check the results. If the problem is corrected, that tells me 2 things....the new intake has problems...and never buy an intake at a swap meet.

Originally Posted by lodilobo

I have not put any type of gauge on the crank case pressure, but I have blown air through the breathers and lines to determine that they are functioning. While excessive crank case pressure may be the source of the problem, I did have a severe crank case pressure problem with a sbc a couple years ago. However, the difference was, that it would constantly blow out oil pan and timing cover gaskets.....not intake gaskets. I am in the process of removing the intake, at the moment. I suppopse I could put the original intake back on the motor, and check the results. If the problem is corrected, that tells me 2 things....the new intake has problems...and never buy an intake at a swap meet.

if you blow thru the hose at the valve covers that not going to tell you that the check valves are bad you need to know at ex pressure can not get in the engine this needs to be check on the other end