Loctite 243 on exhaust nuts?

texasSlick

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I have never had a problem keeping the exhaust nuts on....it has always been a problem getting them off without taking the threads in the head with them. If yours keep coming loose, I would suggest you bodge up some sort of wire security system, or a keeper setscrew, rather than risk bonding the nuts to the threads in the head.
 
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Without trying to go into a long winded statement, it depends on the condition of the threads in the head, ditto; the exhaust nuts and what material it is made from.
If all are in good condition all should be well, but you have to tighten the nuts again when the engine is hot, and Dural nuts are probably the best.
 
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