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Old 01-24-2010, 03:43 AM   #33
3" Exhaust
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Join Date: Nov 2005
Location: Phoenix, AZ
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How did your turbo oil line get a hole? When I had to pull the cyl. head off my '90, I gave up trying to get the bolt out and just cut the lines off--big mistake. I thought I'd be able to weld or braze threaded fittings on them for future disassembly, but that didn't pan out.

I ended up buying a used line assembly from someone on this forum.

You need to be aware that nearly all Mk 3 Supras get head gasket leaks--BHG, or blown head gasket. The problem is that Toyota didn't use enough torque on the head bolts. I bought my '90 when it only had 65,000 miles on it and the prev. owner had retorqued the bolts tighter. At ~80,000 the gasket let go between 2 cyls.

If I ever had to replace another head gasket on a turbo Supra I would pull the engine rather than do it in the car, and reinstall as much stuff as I could while the engine was bolted to a stand.

Remove all the oil around the spark plugs, then pull the plugs. Use a good flashlight and look at the top of each piston. They should be dry. If you see water you may as well fix it before you put it back together.
"You see, wire telegraph is like a very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? Radio operates the same way: You send signals here, they receive them there. The only difference is there is no cat." A. Einstein

1988 and 1990 Turbo Supras
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