I have a 7MGTE in my 3000GT Turbo-A Supra with a huge, larger than standard turbo, and I want to up the boost.
What is the max boost I can safely run ?
I have heard that tensioning the head tighter than standard will help preserve the life of the head, and stop the dreaded 7MGTE blown headgasket problem. My supra has only done 65,000km, so hopefully the head gasket is still in good condition.
I heard tensioning it to 72 was ok, but should I buy new head bolts and torque it to 80 ? How much are new head bolts ?