Cometec cam-cover and sump gaskets
Posted: Tue Oct 04, 2016 11:44 pm
After 30 years using the standard double-cork-and-foil sandwich gaskets, using gasket goo on one side and oil on the other, I got fed up replacing them as they came apart whenever I removed the cam cover or sump.
So recently,when assembling my rebuilt engine with a new block and alloy dry sump, I ordered a set of Cometec gaskets. Again, I assembled with gasket goo on one side and oil on the other.
When I started up the engine, the oil was not oozing from the cam cover, it was actually spraying out
So I removed the cam cover, and on visual inspection saw there was some distortion. I replaced it using a new cork gasket, and hey presto, perfect seal.
Checking the sump, there was considerable weeping along the joint just under the oil pump. Tightening up the 1/4" cap screws considerably over their recommended torque eventually stopped the leak.
So, even though the cork gasket breaks up on disassembly, it does seem to give a much better seal
So recently,when assembling my rebuilt engine with a new block and alloy dry sump, I ordered a set of Cometec gaskets. Again, I assembled with gasket goo on one side and oil on the other.
When I started up the engine, the oil was not oozing from the cam cover, it was actually spraying out
So I removed the cam cover, and on visual inspection saw there was some distortion. I replaced it using a new cork gasket, and hey presto, perfect seal.
Checking the sump, there was considerable weeping along the joint just under the oil pump. Tightening up the 1/4" cap screws considerably over their recommended torque eventually stopped the leak.
So, even though the cork gasket breaks up on disassembly, it does seem to give a much better seal