Posted by Vaughn [172.68.142.74] on Thursday, June 28, 2018 at 22:39:27 :
In Reply to: It was head gasket. But why? posted by jim lee [162.158.107.40] on Thursday, June 28, 2018 at 15:04:00 :
It's the type of gasket, half copper, half paper. Not a good gasket to use unless all machined surfaces are re-machined.
- Do you lug the engine hard? That can build a lot of pressure.
- Is the head warpage greater than .003? Heating/cooling can work the head gasket at thin points on that kind of gasket.
- Do you have a low area between the two cylinders in the thinnest part? This does not allow good sealing, blowing the gasket over time.
- Did you blow the head water jackets to blow out pieces of lose rust? Pieces inevitably will fall out under the head preventing a good seal.
- Did you use a head gasket sealer made to deal with pressure, it does make a difference.
- Were the machined surfaces good and clean prior to assembly?
- Did you retorque after getting the engine to operating temperature, and anytime after that?
Buy a good head gasket!
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