View Single Post
Old 02-12-2018, 11:26 AM   #3
Senior Member
700rpm's Avatar
Join Date: May 2010
Location: Portland, Oregon
Posts: 5,261
Default 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.
Ray Horton, Beaver Chapter, MAFCA, Portland, OR

As you go through life, keep your eye on the donut, not the hole.
700rpm is offline   Reply With Quote