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Knoks can be dificult. the rocker arms can cause a Knock. The two times I ran into this it was because the rocker was actually so loose that it wasn't taping but knocking. Next is colapsed piston skirt. Dodges don't do this as some older blue oval stuff but it can happen. The only way to track this is to pull it apart and start doing some very carefull measurements. Bottom end: Knocks can come from both rod big and small ends as well as mains. It sounds like you had the pan off already. I prefer to measure clearances with "Plasti-guage" but many times I found the problem by pusing and pulling the rods. If you can feel movment its bad. The average person can feel about.007 movement. Your engine probably allows.003 max spec. (check that as I didn't) so if you feel the rod move toward the pisto or away this is the problem. Piston pin knocks are tougher, and quite rare, The engine needs a tear down and carefulll measurment to find this. If the problem doesn't show as a rod check the mains carefully and the ens play on the crank. And finally the weird one, are you sure the flex plate isn't cracked and that all the tourque converter bolts are tight. Did a complete tear down once before I found that. Good Luck |
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