Auto to MT..need help

[nismo93s13]

i need help guys. im stuck trying to take out a MT to put into my AT. i've taken out all the transmission-to-engine bolts, the starter, the rear driveshaft, and everything attached to the shifter but the shifter itself. yet, i still dont know how to pull out the transmission without force, which i havent tried yet. am i supposed to wedge in a pry bar between the transmission and motor to force the transmission out? am i missing something else here? i REALLY dont want to have to drop the motor too, unless that's the best way to go at it.also, what type of fluid should i use for the transmission?

[NISTECH]

if you got all the bell bolts out on the front side and rear side, you should be able to push up and pull down on the tail shaft of the trans to work it loose from the engine. if i remember correctly there is one block to trans bell housing bolt that comes from the front side near the starter and maybe 4 from the front side near the bottom that attach a couple of brakets from the lower part of the engine block.

[nismo93s13]

also, i have 2 ECU's , one labeled 10 and the other is 28. which one do i use with the AT-MT swap. and, the transmission is from a 91 maybe 92 240. i read that using the ECU from my AT car would be fine, but whats the best way to go? is there really any differences between the AT and MT ECU's when it comes to how the car operates?

nismo93s13

[574-240sx]

I'm still currently using my stock auto ecu. I have done the swap. You also need to bypass the neutral saftey switch. Also if the transmission hasn't loosened up you have not got all the bolts off yet. There are two bolts toward the top that are hard to get out. Just feel behind the engine on the bell houseing looking for bolts. Also make sure the two stupid brakets are disconnected on the bottom. Nick

[nismo93s13]

ok, i got the motor out. i had all but one bolt which i couldn't see. when it comes to the wiring, the sensors/wiring to the AT is different than the ones on the MT that i have. since i have the MT wiring, ECU, and ECU wiring harness on hand, should i just go ahead and switch out my AT ECU and wiring harness for the MT ones? seems to be the easy/safe way to go to me. give me some input.

[574-240sx]

I did not have to change my ecu you should just be able to change in the in the manual transmission wiring harness and you should be fine. Also you will have to bypass the manual wiring harness. I have posted about that already just search for bypassing the neutral saftey switch. Also why did you take the motor out? Nick

[nismo93s13]

sorry, i meant that i dropped the AT out. so far, i've put in the MT, clutch lines, brake and clutch pedal w/ clutch cylinder, and bolted up the MT driveshaft to the differential. heres one problem, when i was trying to bolt the driveshaft to the MT, it wasn't a perfect fit. there's a 1-2 inch gap between the bolts on the tail end of the MT and the bolts from the driveshaft, even with the bushing in between them. note: i haven't lowered the car itself from the jackstands, the transmission isn't jacked back up into position, and the motor is still slightly lowered from when i needed to get access to some motor-to-transmission bolts. also, i am using the driveshaft, front and rear, from the MT car that i got the transmission from. and my car is a convertible (if that makes any difference). so, what am i doing wrong? am i supposed to get the MT and motor into the correct position for the MT to bolt up perfectly to the driveshaft? please, anybody help me out here. i only have 2 days at the most to get the rest of this done.

[574-240sx]

Did you put back the carrier in the middle to hol dthe drive shaft up. And have you put the manual (non auto crossmember) crossmember back in along with the rear engine/transmission mount. Do you have ABS also? It might make a difference in the drive shaft. Or did the manual drive shaft come from an ABS car. Nick

[nismo93s13]

ok, the AT is from my 93 convertible. the MT parts are all from the same 91 MT car. i measured the rear piece, the end that bolts up to the differential, and they're both about 21.5in. long. the front piece on the AT diff. is slid onto the AT, but the front piece on the MT diff. is bolted onto a 1-2in. thick rubber bushing (3bolts) with the tail end of the transmission bolting up to it as well. what can you tell me now?

edit: i looked bothof my cars up on the "specifications" diagrams on the SoCal240sx site and i found out that neither of my cars are ABS. what does this mean, should everything bolt right up if i do it right?

thanksnismo93s13

[574-240sx]

Ok from what you told me it should work. Have you got the crossmember from the manual car put in yet. Also does it slide in the transmission at all. Also pics would help alot with captions it would help me better see your situation. Email is [email protected] . Nick

[nismo93s13]

i got all of the wires except two spliced into the relay box. i need to know where the green/orange wire and yellow/red goes into the relay box. also the neutral position sensor/plug from the MT transmission is still unplugged, and i have no idea where to hook it up to the relay box.

also, my battery is dead so when i went to jumpstart the car, the car was cranking. does this mean that one of my wires is not hooked up correctly? btw, this was without me cranking on the ignition.

thanksdavid s.nismo93s13