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Regular maintainence and a new head gasket would probably be more than enough to get the car to go much more than the 90,000 miles you've got on there right now.
It's tough to say when the head gasket will go, I could say that it could go tomorrow. It might also go up to 100,000 miles from now. I just hope that your HG will last a bit longer thanks to the religious maintainence, but no guarantees.
If you have the funds right now, you might even want to take care of the head gasket before it goes - you'll prevent any potential damage to your engine this way. Machine the head, get the block surface as clean/smooth as you can, stick in an OEM gasket (I stress OEM, as aftermarket gaskets can be a bit shoddy), and torque down a fresh set of head bolts to 72lb-ft (Factory spec is too low at 55 +/- 3lb-ft.). Put new valve seals, camshaft seals, timing belt, etc, and you'll have a Supra running in tip-top shape.
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85 Cressida // RIP 11/2003
95 Pontiac Bonneville SSEi | 3800 SC | 225hp/275lb-ft
Last edited by repinS; 03-19-2005 at 12:07 PM.
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