Wes wrote:

"John Kunkel" wrote:


No need to heat the rod if you use a good lubricant and properly support the
piston while pressing.


A bit of lube on an interferance fit can save one from disaster.

It is amazing how quick, the hot / cold thing seems to equalize and grip like a gorilla.
DAMHIKT.

Boiling water on a rag wrapped round the rod (to provide a resevoir of
heat), and plumbers pipe freezing spray for the pin (better still if its
hollow and you can stuff some rag down it to provide a resevoir of
freezing spray and you've got a fair chance it will just drop in. If
not, check how tight it feels and either apply more boiling water and
freezer spray and procede as advised above or farm it out to a pro if it
is not even starting to fit. At 100 deg C, there is no risk of
de-tempering anything. Just make sure its absolutely square ...