Wrong Gearbox ?

[colinC]

Hi,
This is my first post on Saabsceen, Hope someone can help, I have just had the gearbox on my 1993 9000cs 2.3T replaced due to pinion bearing noise (was beginning to sound like a helicopter), got the car back and all seemed well until I took it onto the motorway, the car seems to be reving up a lot lot quicker and the revs seem higher than before, now pulling 4500 rpm @ 100MPH in 5th gear. It makes for an extremely quick car under 70Mph but I am running out of revs too quick when accelerating very fast, I used to be able to just pull 70 in second and now it is a bit noisy doing this in third. Could it be possible that I have had a 1994 Gearbox fitted ?, if so is there any problem with the RPM I am now pulling?
I checked the new gearbox to see if I could find the codes on it but the little plate has no writing left on it. Any help gratefully appreciated

[wrighar]

Colin,

If yours really is a 1993 (not a MY94 registered in 1993), then you can only have a gearbox from a 1993 car or older, they changed engine and gearbox design for 1994.

This sounds as if you have a injection gearbox fitted (or at least another 4.45 ratio diff gerabox fitted).

A 1993 2.3 Turbo would have either had a 4.05 diff (25mph per 1000) Carlssons, late CC 2.3T's and early CS 2.3T or 3.61 diff (28mph per 1000) (aero's and later cs 2.3T's

Who fitted the new box?
It sounds like you've gone from a 3.61 box to a 4.45 one (or one extreme to the other).
I'd be worried as a 4.45 diff box will not last very long with a 2.3T as the diff will not take the power.

Andrew

[colinC]

Job was done by Neo Brothers, Waltham Cross, I ran my vin through a decoder and it came back with 1993 Model series D, car has APC and is on an L plate

[mark e]

Colin,

As Andrew says, it sounds like the wrong ratio box has been fitted. I have a MY93 2.3T and it is a 3.61 ratio. If you are not happy then I would write immediately to them, rejecting the box as being of incorrect specification and not fit for purpose. Be polite but firm, and say you want it replaced with one of the correct spec. Don't waste your time trying to negotiate over the phone.

Welcome to Saabscene BTW

HTH

[billj]

If you could pull 70 in 2nd gear, your original gearbox was a 3.61:1 ratio. Sounds like you have had a 4.05:1 or 4.45:1 fitted instead. I'd definitely get them to change it if they didn't mention they weren't giving you the same gearbox.

[Mark in Ireland]

Neo Brothers, Waltham Cross *[/b]

That says it all.........ripped me off twice, once with a gearbox too. Don't expect too much customer support....I got none!

[colinC]

Thanks for all the replys, I have spoken to Neo Brothers and am taking the car up there on Saturday morning for a road test

[turkish]

ColinC_2.3T

I am just having my box replaced at the moment, The code for this box is GM75403, it is for an early 2.3 turbo DI/APC engine, with the close ratio's, mine runs out of puff at approx 58m.ph in 2nd and 3rd at 88 ish.

It sounds as if you might have this box installed.

I also heard from saab flight, that the later 9000 boxes were the same as found in Vauxhall vectra's.

Hope this helps.

[colinC]

*ColinC_2.3T

I am just having my box replaced at the moment, The code for this box is GM75403, it is for an early 2.3 turbo DI/APC engine, with the close ratio's, mine runs out of puff at approx 58m.ph in 2nd and 3rd at 88 ish.

It sounds as if you might have this box installed.

I also heard from saab flight, that the later 9000 boxes were the same as found in Vauxhall vectra's.

Hope this helps.[/b]

Thanks turkish, what year and model is that ? and is it an origenal gearbox ?

Col

[wrighar]

Colin,

Turkish's box is a 4.05 ration box (it was my uncle old car...)

I sound like you have teh 4.45 ratio for injections only.... (as 100mph at 4500 = 22mph per 1000 (or 4.45 rationin 5th))

Andrew

[turkish]

Mine is a 1991 2.3 Turbo CSE non Tronic engine.

[colinC]

Thanks evryone for all the help, need some help with Gearbox codes now, from what I can gather, please correct me if I am wrong, Pre 94 with a final drive of 4.05 has a code of GM and 1994 and on with a final drive of 3.61 has FM, what code is the 4.45 or is it a different final drive in a GM gearbox, if so re all the FM's 3.61 or have I lost the plot all together, thanks in advance

[wrighar]

GM is old long gearboxes of all ratios up to 1993
FM is new short gearboxes of all rations from 1994

the numbers ar the important bit.

You want a version 4 gearbox from this list...

Version 1:
GMT5301, GMT5401
'86-'87 2.0 turbo, no ABS
4.05:1 final drive with bushings behind spider gears
Engine-oil dipstick is notched and used to measure tranny oil level through
the fill hole.
Small inner driver.

Version 2:
GM75401, GM75301, GM75402
'88-'90 2.0 turbo ABS
4.05:1 final drive with bushings behind spider gears
Fill hole is moved to the front of the tranny case because the early rear
fill hole would be nearly impossible to get to with the ABS brake system
right above it. '88 has a cap bolt with dipstick attached to it, '89-'90
have a proper dipstick and tube.
Small inner driver.

Version 3:
GM75403
'91-'92 2.3 turbo, ABS (ABS/TC in '92)
4.05:1 final drive with bushings behind spider gears
Front dipstick for level checking and filling.
The earlier rear fill hole was not drilled anymore because it's
near-impossible to get to with the ABS brake system right above it.
Large inner driver.

Version 4:
GM75701
'93 CST, CSET and Aero
3.61:1 final drive with *needle bearings* behind spider gears
Front dipstick for level checking and filling.
Large inner driver.

Version 5:
FM751xx
'94 CST, CSET and Aero
3.61:1 final drive with *needle bearings* behind spider gears
Reverse-gear synchro, and revised synchro and selector function throughout.
Fill plug, level plug, drain plug, no dipstick.
Large inner driver.

Version 6:
FM751xx
'95-'98 CSET and Aero
3.61:1 final drive with bushings behind spider gears
Reverse-gear synchro, and revised synchro and selector function throughout.
Fill plug, level plug, drain plug, no dipstick.
Large inner driver.

Version 7:
FM750xx
'95-'97 CS LPT
3.61:1 final drive with bushings behind spider gears
Reverse-gear synchro, and revised synchro and selector function throughout.
Fill plug, level plug, drain plug, no dipstick.
Small inner driver.


The following trannies are from non-turbo cars, and have the super-short
4.45:1 final drive, and should give a 9kT the power to climb trees:
GMT5202, GMT5203 ('87 9000S)
GM65101, GM65102 ('88-'90 9000S)
GM65103 ('90 9000S 2.0 and 2.3, '91-'92 9000S, '93 CS/CSE non-turbo)
FM510xx ('94 CS/CSE non-turbo) *[/b]

Andrew

[colinC]

Thanks Andrew, I am now well armed for my jaunt from S. London to Waltham cross now,

The following trannies are from non-turbo cars, and have the super-short
4.45:1 final drive, and should give a 9kT the power to climb trees *[/b]

The climb trees bit is true, never had low end power like this before,

[tandino]

Ahh - my good friends Neo B'stards - sounds like theyve stiched up another customer...
I wish you luck - you will need it

Pete.