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with a MHG with o-ringed block at 18psi and running lean, this motor got hot enough to burn the pistons, but did not blow a head gasket. I just never heard of it before and can not find any info on the internet with that combo. Depending on how deep the o-ring grooves are, i will attempt...

Hello all, I have been a member at celicasupra.com forever, but just recently.... I purchased a car, with a half assembled 7mgte. The engine had o-ring grooves machined into the block, dont know if the head had receiver grooves, but i would think not since the gasket used was METAL. This...