quarter size whole on transmission

[LMKDSMVIC]

ok i've searched for like a half hour on something that could answer my question and i found nothing so i apologize if i didnt look hard enough, anyways on a friday night i was cruising around "the wash" (for those who live in or near madison,WI) and i downshifted in second going about 40ish and killed this civic trying to race, anyways after i put it in nuetral coming out of third i heard pieces come out of under me like "clink clink clink" after that my speedometer dropped to zero and wouldnt move at all. i tried shifting into all gears and after i let go of the clutch to engage it, the car stalled even though i was rolling at about 50 mph, i realized i could not go anymore so i rolled into the nearest parking spot and checked it out. smoke came out from under the hood and under the car. the engine still runs hard i just cant go anywhere even after i applied gas and let go of the clutch pedal. at first i thought it was the clutch but it wasnt. the next day i checked it out under the car and found a quarter size whole on the shell of the transmission or whatever. I want to know what exactly i have to fix, replace or do i need to get a complete new tranny? oh yeah i have a 5-speed mitsubishi eclipse gs so it has the 420A engine. let me know i would appreciate it. also is there a transmission for sale on the market that is ment for performance that will fit the 420A motor? im planning on getting a hahn stage 1 or 3 kit and i want my clutch to be able handle even though the stock clutch is suppose to be able to, but i might as well put in a performance clutch while the engine is out. I thank you for reading all of this and a thanks in adance to anyones help.

 

[roadrunner2176]

You abused the tranny and threw the differential pin through the case. You need a new half case at the very minimum. This happens quite often, usually when the fluid overheats and the pin seizes from lack of lubrication and ends up going through the case. The nv-t350 tranny is a good trans, just not one built to be abused. If you replace or rebuild the trans, get the bracket from chrysler (6-10 dollars) that supports the pin so this wont happen again.