1989 Supra blown head gasket

[bahamutmaster]

Originally Posted by mrnickleye

Don't use a metal head gasket unless you resurface the block, anlong with the head. This means a complete overhaul, as the block needs to go to the machine shop too.

I'm using OEM gasket for 1 1/2 years now, with no issues. And I push it damn hard, a lot.

You must have something else wrong. The block may be the problem, since the steam returned right away.

Did you torque the bolts to 72 lb ft ??

Did you look REALLY closely at the gasket and head and block to find any sign of where the gasket may have blown??

Mine, as so many others have experienced, was a tiny spot next to #6 cylinder. Also, the area on the block had a tiny place that was eaten away from the coolant/heat.

An ISHINO (OEM) gasket is WAY more forgiving (seals better) for surfaces that have not been resurfaced to a very fine RA factor.

check this info out:

http://www.aa1car.com/library/2003/eb30320.htm

do you have to torque it down to 72? the haynes book says its 58.

[mastergrader007]

58 is why 99% of 7m's have blown their gaskets. undertorqued from factory with no recall. trust me, im doing my BHG as we speak. torque em!!!