Quote:
Originally Posted by KLF
I have changed quite a few HGs, at least a dozen, probably more. 3VZ-E's, 22R/RE's, even a couple 4A Corolla engines. I have never once re-torqued a head bolt. Ever. Never had a failure either.
But I ALWAYS ALWAYS use Toyota red coolant, mixed with distilled water. My '87 has had it since new, and it's still on the original radiator. The inside of that engine is still sparkling clean, even after 220K miles.
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NEVER retorque a TTY headbolt such as found on the 3VZE.
I have retorqued 22R headbolts and found them slightly out of spec. It is a service item.
Agreed that it pales in comparison to lousy coolant condition as a cause of HG failure though.