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Originally Posted by nitrorocket
Come back the next day and retorque, they will tighten a little more.  |
Good practice with any headgasket. What I usually do is after they sit a few hours come back and then in order back off the bolt about 1/4 turn and then retorque. I like to repeat this excersize about 5 times with a few hours "set time" between each cycle. Obvious issue to watch for is you need to use a non-hardening thread sealer otherwise you risk the chance of disturbing the seal.
In my experience MLS gaskets don't take a heat-set, so there is no need to retorque after the first heat cycle, but doing so is a very good idea with standard composition gaskets. If I were using new heads I would still retorque MLS gaskets as the aluminum will probably stress-relieve and move a little bit after the first couple heat cycles.