First, you won't bend any valves. Supras are "non-interference" engines, fortunately. If you can't prevent the crank from turning by some simpler method, you can have a 3" rod welded to the end of an old spark plug. Use a rod about 7/16" dia.--just small enough to slip thru the threaded hole. Grind the sharp edges off the bottom and screw it all the way into a spark plug hole. It will stop that piston from rising more than ~halfway, and the load on the piston won't be very high, compared to what it would be if you use a short rod.
AFTER I got my damper off I used a big drill bit to countersink the threaded holes on the front. As I recall I had a hard time getting the puller bolts into the stock threaded holes.
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"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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