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Old 03-22-2021, 05:31 PM
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ronstory ronstory is offline
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Quote:
Originally Posted by Dave Neptune View Post
Ron, lock washers should not be used on studs or bolts going into a water jacket or oil galley. The liquid will move up the threads and leak out of the gap in the lock washer, use flat washers for a "seal". In some cases a "star-lock" can be used, however I have not had a problem with a properly torqued flat washer ever coming loose.

RobH2, nice work and perseverance while contorted.

Dave Neptune
Dave--

My comment above regard lock washers was related to exhaust flange only. With a healthy manifold, the studs should do not penetrate the coolant passage. However, I had a "special" manifold that came with all-thread as a stud and nut on the *inside* of the passage. (sigh)

I should have just thrown it away, but tried to save $400... when I had already spend $3k on parts and machining. Penny wise, Dollar foolish.

Agree on the flat washers for rest of fasteners with liquid penetration... just not the exhaust flange.
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Ron
Portland, OR
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