I've been of the belief that the problem is electrolysis between the steel
studs and the aluminum. I encountered a similar problem once trying to get
the fill plug out of the side of the trans (after I had drained all the oil,
of course). BF Crescent wrench and BF hammer finally convinced it to come
out. For the tranny plugs I use a wrap of teflon plumber's tape.
I think the best solution for the tower might be to coat the studs with
anti-sieze compound. I've been doing that on the U20 thermostat housing for
a while now, since it can be stubborn, too.
Gordon Glasgow
Renton, WA
www.gordon-glasgow.org
> Typically the R16 tower becomes 'one with the head' because of
> corrosion between the long studs and the tower. The coolant isn't
> (supposed to be) in this area - just steel bolts, aluminum surround,
> lots of heat, time, pressure, and probably a little moisture seepage.
> After a few years the dissimilar metals pretty much fuse together.
>
> -- John
> John F Sandhoff sandhoff@csus.edu Sacramento, CA
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