frozen bolts in aluminum

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wß - 10 Feb 2006 22:45 GMT

I am posting this for a friend.
He has a '91 Vette which has aluminum intake and heads. He has/is
removing the intake and some of the bolts are seized. Seized to the
point that he has twisted one off. Is there some recommended technique
to "un-seizing" these bolts? If not, what is the recommended course of
action once one is twisted off? Any hints, tips, suggestions, or funny
jokes I can pass on will be appreciated.
Frankly it reminds me of the old VW engine and it's problems.

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Nate Nagel - 10 Feb 2006 23:31 GMT

> I am posting this for a friend.
> He has a '91 Vette which has aluminum intake and heads. He has/is
[quoted text clipped - 4 lines]
> jokes I can pass on will be appreciated.
> Frankly it reminds me of the old VW engine and it's problems.

This has to be one of my *least* favorite situations, penetrating oil
and heat both help but be very careful with the latter. Aluminum is
nowhere near as forgiving as cast iron. Bet your friend will be sure to
put anti-seize on all the bolts when he reinstalls. If any of the
threads in the heads are dorked up heli-coils or other threaded insert
type deals are the way to go.

nate

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Brian - 14 Feb 2006 15:24 GMT

Nate is dead on. The only thing I have success with is heat. Sometimes a
lot of it, actually. Totally a PITA and use anti-sieze when the bolts are
re-installed.

Brian

>> I am posting this for a friend.
>> He has a '91 Vette which has aluminum intake and heads. He has/is
[quoted text clipped - 13 lines]
>
> nate

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Dave Baker - 11 Feb 2006 00:33 GMT

My website contains tips on removing stubborn fasteners.

www.pumaracing.co.uk
--
Dave Baker

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