I dont even know where to start, i dropped the transmission today and it wasnt what i was expecting......
bit of history first,
flexplate #1
didnt seem to fit right it ran into the face of the converter before the outside bolt holes touched the pads(actually had to use the bolts to bend the flexplate to the coverter) the converter sat back too far making it run into the tranny pump i believe causing it to fail.
Flexplate #2
i got a new converter and plate(fits the same) so i think im real smart and trace out the bellhousing on a piece of 3/16" aluminum plate cut it out, drill bolt holes and now i have a "shim" for between the motor and the transmission. the rubbing vibration at speed is almost gone but when the second one cracks i realize that my "super cool shim" doesnt allow the dowel pins to center the bellhousing to the engine block which may have been the reason it failed.
Flexplate # 3
A month ago after the second one fails i buy a B&M flexplate and it fits way better. the converter comes farther forward and the only part of the converter that touches the flexplate are the pads. i toss the shim and bolt it up to the engine. but still have the weird vibration when i step on it which goes something like this under hard acceleration
ziiiiiing ziiiing ziiing ziing zing zing zing zing.........(if that makes sense)
Today
i dropped the transmission and pull out the torque converter and the new converter has no rub marks at all. as you can see from the picture of the pump, the first torque converter was rubbing, so aI assumethe vibration that I was getting was still from that. The back of the new torque converter is pristine. So since I have installed the 2nd flex plate and torque converter, there hasn't been any rubbing.
- there is almost no crankshaft endplay
- the converter hub is seated in all the way into the crankshaft (you can see where it's rubbing against the back of the crankshaft)
- measured the hub and the crankshaft hole , they are almost identical
- blew thru the tranny cooler lines, (transmission fluid doesn't taste good) but it doesn't feel restricted
- crankshaft bolts are all tight and plate is square against the flange
Here's the pics, I don't have a clue what's goin on.