Re: Why no lock-washers?
I have always thought that it isn’t that they work loose, it’s that the high temps on the manifold cause the metals to expand and contract which changes their relative fitment. On the head I have assumed it was the head gasket getting settled in. No science here, just my assumptions.
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Ray Horton, Portland, OR
As you go through life, keep your eye on the donut, not the hole.
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