exhaust studs and oil cooler removal

[Screwdriver]

So how does this work?

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[/size]Well, what a lot of people seem to ignore is that if you heat up the male thread, you are also heating up the female alloy because it is in such close proximity. Also the coefficient of expansion for aluminium is higher, up to twice that of steel. Ordinarily it is a devil of a job heating alloy which is a notorious heat sink so it is much easier to heat the steel bolt. Also if you go to all that trouble to heat up the alloy, good luck trying not to also heat the bolt.
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[/size]Yes you can fiddle around with cooling, chilling and even dousing with water but the plain fact of the matter is, if you heat the bolt cherry red, it will come out and you don't need to spend more than a few seconds on it either.
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