Ok I did an engine swap z24i to z24i, nothing too complex.
Anyway the good starter grinds and won't engage. It was new on the blown motor. Works fine and both spins and pops out engaged on the ground.
Now. The blown motor was a manual trans that did not have a large spacer between the engine and flywheel.
The new motor was an automatic and did have the spacer. I did not use the spacer because the manual didn't have it.
Am I going to have to drop the trans or is there anything else I could do? Could I put two washers between the starter and the block to see if it would hook up like that?
Of course you really can't see anything because of the manifold.
New/old motor spins freely and I pulled the exhaust side plugs just to try with no compression.
Also the first two times I bumped it when I finished installing it, it did turn the motor.