tappet adjusters excess play

Another fix is medium grade Loctite. Remove adjuster & clean adj & threads with Lacquer Thinner first.

You may enjoy this, road testers raved about the 58 Plym. 318 Poly & 2bbl, did 118 mph!

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I did put loctite, in an emergency attempt.
But I found the particular pushrod cup worn more than the others.
I have the feeling that the oil passes throught the threads and lubricate the pushrod cup........