Thread: 502 Help - Water in Oil Filter

Tweet

Hey all. I have a brand new ZZ502 in my 75 Corvette. It had a intake manifold leak (Accel SuperRam) so the the oil turned to a milkshake. It has since been drained but it looks like the oil is still getting water in it.

When we pressurize the coolant system it will hold pressure and slowly start to leak off. New antifreeze will drip out of the oil filter block.

This is a brand new long block from Chevy, it has been sitting since 2007 though.

Any ideas what to do next?

Mike

My guess would be tear it down and find leak. when it was sitting was it winterized??

Originally Posted by cffisher

My guess would be tear it down and find leak. when it was sitting was it winterized??

It was not winterized but it was sitting in my garage here in CA, so it shouldnt be too bad.

wrong head gaskets or wrong heads this enging came from a dealer built ? or a put together build ? you can not used older BBC heads or the older mark 4 head gaskets or they will leak

Originally Posted by pat mccarthy

wrong head gaskets or wrong heads this enging came from a dealer built ? or a put together build ? you can not used older BBC heads or the older mark 4 head gaskets or they will leak

It is a ZZ502 longblock direct from a Chevy dealer.

Originally Posted by PolishMike

It is a ZZ502 longblock direct from a Chevy dealer.

well if the block is not cracked then it is head gasket if or intake leaking there no water plugs in side of the engine to make it leak water in the oil less the block/heads has a spot were the casting is weak sounds like it is going to have to come apart make sure the intake is not bottom out on the block stoping the intake gaskets from sealing up