Torque convertor issue

[jvginpdx]

I have a 1990 Cressida, same as Supra.

When I pulled the engine to fix the usual BHG problem, I thought I could use the opportunity to pull the torque convertor out and pour out the ATF. I have pulled torque convertors before on old Chevys, they go back on any old way. So I just shoved it in any old way, and noticed that the engine would not bolt up. So I partially tightened the bolts on the right side, then got an extra long bolt on the left side, so it would grab. The engine was at a slight angle at the time. Still would not go in. I heard a POP ! noise. and thought OH F--- ! What did I ruin.

I pulled the engine back out. My flexplate is bent badly, so I need an other one. Now the POP. It could have been the nipple part of the torque convertor popping in to the crank shaft suddenly, or it could mean damage inside the pump? How should I check things out? Should I pull the pump and take it to a transmission place to get checked out?

I noticed that the notch in the torque convertor needs to slide over the raised fingers in the transmission. It needs to go on exactly right, orit wont fit. Is there a trick to getting it on easily, or is this just trial and error?

Any help is appreciated!