In regards to tight spark plugs, it was written:
> You also might try getting the engine up to normal running temperature
> before attempting to remove the plugs. As aluminum expands at a
> faster rate than steel, the plug hole should open up slightly more than
> the plug expands in it thus making the plug a bit easier to remove
> without damage.
I'm not a machinist, but if aluminum expands, won't such expansion
actually squeeze the hole smaller since the expanding metal has to
go _somewhere_?
To my knowledge, torqueing a spark plug on a hot head is likely to lead
to needing to experiment with installing helicoil inserts :-)
-- John
John F Sandhoff sandhoff@csus.edu Sacramento, CA
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