Done a full rebuild on the engine,fitted composite head gaskets,pumped oil round the engine by driving up the oil pump,fitted the engine and next day oil appeared at the head joint on both heads.
Took the heads back off and found oil covering both sides of the gasket on both heads.
Measured the thickness of the gasket at the metal sealing rings for the cylinders and found it greater than the composite gasket material even after it had been compressed.
It would seem then that the head can not compress the composite part of the gasket enough to seal the oil passage from the block to the head.
Ive measured the bolt depths,dowel pin clearance even compression tested it before I took it apart,alls fine.
The engine was fine before the rebuild so it all points to the gaskets.
Been in touch with the supplier,very helpful and has agreed to send new gaskets (Elring brand this time) but can not explain why they failed as they sell loads with no problems,apparently.
Have I missed some thing? Am I alone with this issue?
I do know that I will be putting some sealant around the oil feed hole this time.
