| Geoff Branch wrote:
> What head gasket to use?  Are the copper ones any better?
The only head gaskets I have ever blown were the copper/asbestos type.
Never a problem with the paper type. 
> While the head is off, I'll take it to the shop.  Should unleaded > seats be 
>put in ?
This is pretty much a waste of money. 19 years on a rebuilt engine and
still no head problems. I did not have any valve seats replaced back
then.
> How does one tell if rings are oversized?
clean off the piston tops, they will be marked 0.10, 0.20. 0.30 etc.
 
> Would reversing the lines going to the heater have done this?
Nope.
-- 
Frank Clarici
Toms River, NJ
http://www.exit109.com/~spritenut
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