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1990 9K motor differences- mating to transmission probl
Posted by Sjer (more from Sjer) on Wed, 5 Feb 2003 12:01:21
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I am trying to mate a rebuilt 1989 ZF automatic transmission (originally on the old motor of my car) to a used 1990 9KT 2.0L motor. The problem is the motor binds (seizes) when the transmission mounting bolts are tightened.
There are several differences between the two motors and it is impossible which of these is causing the problem. The most obvious difference is the crankshaft end. On the old motor, there is a lip present where the torque converter guide (nose in center) goes in, but the new motor has no lip- the shape is identical to the torque converter guide. The second difference is with the flywheels. The new motor has a solid plate riveted to the starter ring gear, but the old motor has six holes in the plate, that fit over very small dimples in the torque converter. I have not yet tried using the old flywheel to see if the motor binds or not when mated to the transmission.
I have tried to verify that both motors are 1990 9KT motors, but the only evidence I have are the VIN numbers. No numbers on the block correspond to the motor numbers I got from the Saab dealership. I kind of have to make the assumption that these are both 1990 9KT motors, in spite of the differences.
The torque converter has been suggested as the cause of the binding problem also. However, it appears to be fully in (0.7" avg, clearance from the transmission mounting face to the flywheel bolt surface). In fact, it won't come out.
Appreciate any help- can't figure this one out.
posted by 67.96.121...
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