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From: Hank Dozier
Remote Name: 184.108.40.206
Date: February 24, 2003
Old MOPARs did have the threaded holes through the exhaust into the coolant. Also some head bolt holes on some go through as well! Best course of action that I have had in the past is to chase the threads very good with a tap and blow out with aire after a squirt of acetone. Then use the plumber's teflon paste to coat the threads and tighten into the heads using a double-nut technique. This should seal the threads. Headbolts get same service except for the double-nut part.