Gonzina wrote on 12/31/69 at 16:00:03:Hi Greg, so what's the norm of this leak do you think it stems from the plug or the gasket?
I was reading other posts and seems like when the plug leaks, the oil comes out from the middle of the cylinder!
Cheers
Claudine
Those are 2 separate leaks, even though the plug leak can blow all over the place and look like it.
I'm gonna try to focus on that middle stud leak when I reassemble mine. I actually think that is a little bit of a design flaw in the head gasket.
There is an oil passage that is sealed by the head gasket, and the gasket has two sealing ridges...one inside and one outside. I believe the stud leak comes from oil that weeps around between those ridges in the seal, and since the nut has no gasket it can leak out around both of those nuts.
My nuts (I can't wait) had small oil drops on it when I took off the head, and I found the gasket was wet with oil all the way around...and yet the combustion chamber was sealed just fine.
This is actually the second time I've done this, and the first time I really paid attention to my torquing to make sure it was sealed right. I leaked anyway.
I think the leak is the head gasket but not in the traditional "blown" way.
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