Quote:
Originally Posted by harleytoprock
To tighten the plug flush or enough for the cotter pin to drop in is not consistent because springs, seats, plugs and bore depth can be dimensionally different. It's best to tighten plug till all free play is removed and then tighten an additional 1 to 1.5 turns. This compresses the spring about 25% of it's free travel and gives the rod end a nice feel. Tight but not too tight.
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That's about where mine are flush, after I take her out for a test drive, if it feels to loose I can always crank it down to where she feels right.
That's the wonderful thing about Model A's, you always get to work on them.