Tim, If you are not saving the pistons and have the crankshaft out of the
block, why not set the block in a hydrolic press? Then place a suitable size
thick piece of steel on top of the piston and press them out. I have a feeling
they will move rather easily since you have been soaking them with penatrant.
Ken Suhre
Tim wrote: Has anyone tried
> to free stuck pistons out of an
> old motor.
> I picked up a spare 1147 Spit motor that has been sitting
> with
> the head off for
> at least 15 years.
>
> Pistons 2 & 3 were at BDC and came out
> pretty easily after soaking in Kroil and
> PB Blaster for several days, then
> tapping out with a piece of wood and hammer.
> Pistons 1 & 4 are at TDC and
> pretty well frozen in place. Penetrants doesn't
> seem to weep past the
> rings. I've tried heating the pistons a few times
> with a
> propane torch.
> That hasn't helped much either.
>
> I have the motor on a stand and alternate
> soaking it from the top or bottom
> every free days. I understand much patience
> is required. Eventually I may have
> to use brute force and bust the out. Not
> a big deal since the block will need to
> bored out. But at this point I'm
> still hopeful that they can be removed intact.
>
>
> Thanks,
> Tim
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