Were it me, I'd run the engine a little to heat up the manifold etc., apply
some good penetrating fluid, (Kroil?) repeat, then try removing the
fastener. Safety first of course. (Though I have yet to see that type of
fluid ignite on a par I've heated up with a propane or MAPP torch.)

The good news is that I'm pretty sure the stud metal is fairly soft. At
least the exhaust manifold stud metal at head is. I realize you at out in
the wild though.

Neil.

On Friday, December 16, 2016, Don Hanson <dhanson928@gmail.com> wrote:

>  Should I run the motor to heat up everything first, or cold? Which is less
> likely to break the studs?
>   the motor is an inline vw ( ABA) with dual downpipe manifold.
> I'm "remote" and I can see and hear some exhaust coming past the gasket on
> the manifold... I'm not keen on breaking any more of the fasteners...some
> have broken before. Thanks
>

--
Neil n

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