Quote:
Originally Posted by 1930-Pickup
If you need a solution to exhaust manifold nuts backing off, you could use interference-fit brass nuts. This was a fairly common item and solution in years gone by. They would have cost a few cents more, so that's probably why Henry didn't use them  |
Ford used brass nuts on the exhaust manifold to exhaust pipe studs on the flat head V-8s for many years.
FWIW, about 25 years ago I worked w/a fellow that was a heavy equipment mechanic that had worked for a CAT dealer for a number of years. He told me that CAT had stopped using lock washers because they had done tests that showed that fasteners stayed done up just as well w/out them as with them.