codeofdastreets
10+ Year Contributor
- 504
- 2
- Sep 25, 2008
-
dunedin,
Florida
Hey I was just curious of what the diffrence between the 1990 dsm and the 1991 dsm are??
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Some of you guys are screwing this up, 91's could also have the early trans with the 22 spline output shaft...
That's funny because I've never come across a 90 that had one and believe me I've searched every yard I could find for one. Maybe it's an East/West thing for eproms or something.
Anyway, codeofdastreets, it is possible to use the 91-94 ecu in the 90. Heres a few articles about the wring differences.
http://www.dsmtuners.com/forums/art...4-ecu-swap-into-1990-dsm-ignition-wiring.html
DSMChips.com | DSM ECU Chips Enchanced by Keydiver
http://www.dsmtuners.com/forums/bolt-tech/213438-91-t-body-cas-90-a.html
My '91 has an oil cooler. I thought they put the oil cooler on all turbo cars. Or is it a different style oil coolers on the '90?
Is this why on some 90´s and 91´s the fuel and rpm gauges wont work?
The ECU issue.
Only the first month of 91 builds.
Oh? And what month was that? My finding is most 91's have 22 splines... possibly only the late ones had 23
CAPS says that on manual AWD cars the 22 spline transfer case, MD739053, was used from 1989.03.1 to 1990.06.3 and from 1990.07.1 to 1994.05.1 the 23 spline MD785205 was used.
Production of 1991 model AWD cars started 1990.06.2 so the first couple of weeks they got 22 spline transfer cases.[/QUOTE
]Ok now let's say I have a 90 gsx but break a tranny or transfercase at the track. Lucky I have a 91 tranny nd tranfercase on the side. How whould I make this work in my 90gsx?? Whould have the get a 91 driveshaft??
CAPS says that on manual AWD cars the 22 spline transfer case, MD739053, was used from 1989.03.1 to 1990.06.3 and from 1990.07.1 to 1994.05.1 the 23 spline MD785205 was used.
Production of 1991 model AWD cars started 1990.06.2 so the first couple of weeks they got 22 spline transfer cases.[/QUOTE
]Ok now let's say I have a 90 gsx but break a tranny or transfercase at the track. Lucky I have a 91 tranny nd tranfercase on the side. How whould I make this work in my 90gsx?? Whould have the get a 91 driveshaft??
If you swap both the transfer case and trans to a 23 spline it'll be fine. If I remember right when i did mine I just had to switch the shifter brackets over from the 90 to the new trans. Everything else bolted up fine. However if you only have the transfer case you'll have to swap the output shaft on the trans to the 23 spline or it wont bolt up.
CAPS says that on manual AWD cars the 22 spline transfer case, MD739053, was used from 1989.03.1 to 1990.06.3 and from 1990.07.1 to 1994.05.1 the 23 spline MD785205 was used.
Production of 1991 model AWD cars started 1990.06.2 so the first couple of weeks they got 22 spline transfer cases.
Mines an august build and it had a 22 spline early gear-set trans in it. It was removed at 106k miles and the vins match, its never been out of the car.
CAPS says that on manual AWD cars the 22 spline transfer case, MD739053, was used from 1989.03.1 to 1990.06.3 and from 1990.07.1 to 1994.05.1 the 23 spline MD785205 was used.
Production of 1991 model AWD cars started 1990.06.2 so the first couple of weeks they got 22 spline transfer cases.
What does caps list for ABS components for a 90?
I've got quite a few 90 cars and none have ABS and I have yet to see a 90 with ABS. (Doesn't mean it's not possible) Like others here, I'd swear they didn't. Like I read it in the VFAQ or other acceptable source.
They must have been out of the right trans that day.
CAPS isn't the DSM bible...
, no it's just what every dealer uses as the absolute reference for what parts go in what car. It may not be perfect but it is as close to the bible as we get.
It's just a parts reference, point is it's obviously not right. And if you have a 91, there's like a 50% chance it being 22 spline...