[6pack] 6pack Digest, Vol 5, Issue 134

[Jimandruthhome at aol.com]

Quite a long time ago now, I had what seemed to be a head gasket  failure, 
and may well have been. Whatever the cause, in remedying it my  machinist 
found a crack between exhaust and intake in one combustion  chamber.  The 
valve seats are a little too close together. This  seems to be a fairly common 
problem.  It's fixable with TIG welding  followed by stress relief.  I'm 
still running the same head 30 years  later.
 
Jim Knight, '71 TR6 

I took it to the machine shop they found 
cracks in a couple  places between the exhaust and intake valves, I guess a 
somewhat common  occurrence.  Greg Lemon