How many miles on your Supra

[MA70-3.0GT]

Nah, the factory torque spec is WAY too low. Possible re-torqueing could do it IF done in wrong order but probably more likely overheating from a bhg or putting cold coolant in a hot motor would cause a crack?

Anyway, think mine's on 130k miles or so, engine rebuilt with all new bearings, pistons, rings & re-con head before I got it (p/o/ blew it up big time somehow, was bits of piston in car!), then h/g blew right away with factory specs & he abandoned it.

only around 3/4000 miles between when I replaced h/g and torqued up nicely & when the turbo let go ages ago. Finally got a brand new turbo on it's way as we speak

[MJG]

89 turbo, origional owner with 46,319 miles.

[pandrade]

The Toyota mechanic and my mechanic say not to increase the torque of the head bolts.

i went on the tsrm and torqued it in the proper procdure of coarse checking if they where to proper specs in the first place, then went to the NEW proper specs. iv had no issues at all whith head gaskets( knock on wood)