24V AWD Swap Knowledge Base

[The Dark Side of Will]

I'll just have to count teeth when I get both.

I would like to put the DZ sixth into a BZ box, if you know anyone who has some gears hanging around.

[Nisse Järnet]

A5S 300J (old designation)
A Transmission type. S = Manual transmission. A = Automatic transmission
5 Number of forward gears
S Type of top gear. D = Direct gear. S = Overdrive gear
300 Max. input torque (Nm)
J Code letter of transmission manufacturer. G = Getrag. J = Jatco. R = GMPT (General Motors Powertrain). Z = ZF (Zahnradfabrik Friedrichshafen)
SMG SMG = Sequential M gearbox/transmission

GS6-37BZ (new designation according to BMW Group Standard GS 90007)
G drive
S Transmission type. S = Manual transmission. A = Automatic transmission
6 Number of forward gears
- = Standard with manual gearshift. HP = Hydraulic planetary gear
37 Transmission type. 26 = D-transmission. 31 = C-transmission. 39 = F-transmission. 37 = H-transmission. 53 = G-transmission
B Gear set. B = Petrol/gasoline gear ratio. D = Diesel gear ratio
Z Code letter of transmission manufacturer. G = Getrag. Z = ZF (Zahnradfabrik Friedrichshafen)

BMW designation.---- Manufacturer-----Manufacturer designation-------Remark
----S5D 200G-------------Getrag------------B transmission (220/5)
----S5D 200G-------------Getrag------------B transmission (221/5)-------for M41 engine only
----S5D 250G-------------Getrag------------B transmission (220/5)-------Reinforced design
----S5D 260Z-------------ZF-----------------C-transmission (S5-31 D)----for M51 engine only
----S5D 280Z-------------ZF-----------------C-transmission (S5-31)
----S5D 310Z-------------ZF-----------------C-transmission (S5-31)-------up to 9.95
----S5D 320Z-------------ZF-----------------C-transmission (S5-31)-------from 9.95 (reinforced design)
----GS5S31BZ(SMG)-----ZF-----------------C transmission SMG
----GS5-39DZ-------------ZF-----------------F transmission
----S6S 420G-------------Getrag------------D-transmission (226/6)
----S6S 420G(SMG)------Getrag------------D transmission SMG
----S6S 560G-------------Getrag------------E-transmission (286/6)
----GS6-37BZ-------------ZF-----------------H-transmission
----GS6S37BZ(SMG)-----ZF-----------------H-transmission
----GS6-37DZ-------------ZF-----------------H-transmission
----GS6-37BG-------------Getrag------------H-transmission
----GS6-53BZ-------------ZF-----------------G-transmission
----GS6-53DZ-------------ZF-----------------G-transmission
----GS6-17BG-------------Getrag------------I-transmission

Automatic transmission:
BMW designation.----Manufacturer----Manufacturer designation-------------Remark
----A4S 200R-------------GMPT-------------------GM4
----A4S 270R-------------GMPT-------------------THM-R1w-------------Transmission wide-stepped
----A4S 310R-------------GMPT-------------------THM-R1
----A5S 300J--------------Jatco-------------------Jatco
----A5S 310Z--------------ZF----------------------5HP-18
----A5S 325Z--------------ZF----------------------5HP-19
----A5S 440Z--------------ZF----------------------5HP-24
----A5S 560Z--------------ZF----------------------5HP-30
----A5S 360R/390R-------GM---------------------GM5
----GA6HP19Z-------------ZF----------------------6HP19
----GA6HP26Z-------------ZF----------------------6HP26
----GA6HP32Z-------------ZF----------------------6HP32
----GS7S47BG-------------Getrag-----------------SMG-------------------Motorsport M5

http://www.kneb.net/bmw/E36-7/BMW%20TIS%20Transmission%20designations.pdf

http://www.kneb.net/bmw

[Nisse Järnet]

Heres a 325D

https://www.bildelsbasen.se/?link=item&searchmode=3&page=1&order=price&asc=1&query=GS6-53DZ&post_id=29520816

[Nisse Järnet]

Yes it does, heres from a 135i for example :)

https://www.bildelsbasen.se/?link=item&searchmode=3&page=1&query=GS6-53BZ&post_id=32774194

Hmm i dont think ive read about it in english forums, but in swedish :) People normally use DZ versions in M20 configs here because it fits the engine angle. Pretty common that they use DZ on M50s too though, mostly because of better price and theres is more of them. But BZ version is getting more used because of the better gearing as i mentioned and that the angle is like the M50 etc.
Specially the first gear is short on the DZ and most people here doesnt really like that :P

Oh and there are more than one bellhousing at least on the GS6-53DZ, some are too big and doesnt fit M20/M50 etc. It has to do with the codes after the gearbox model, like HGA, THGZ etc.

[The Dark Side of Will]

It has to be, really :)

We'll see when I grab one and crack it open ;D

All DZ gearboxes i have checked has got the 20 degree angle and diesel ratios, the E46/E39 x30d GS6-53DZ/GS5-39DZ and E9x 320d-330d GS6-37DZ/53DZ gearboxes for example is commonly used on turbo builds over here.

That is exactly what I'd expect to see based on the RealOEM info.

The E9x 335i GS6-53BZ is getting more common because of 30 degree angle and better gearing ratios.

Do the tags actually say BZ? Is there an English thread anywhere in which someone grabs a 335i box and counts input/output turns to estimate ratios?

[Nisse Järnet]

;) That must be it.

I think the tag will be sufficient for determining which configuration it is.
I'll have one of each... I'll be getting tooth counts all over the place.

OBTW, here are the configuration identifiers:

GS6-53BZ-THGZ 02/2002 - 07/2010
E60 LCI through 12/2009

GS6-53BZ-THA9 01/2009 - 06/2013
F10 through 06/2013

GS6-53DZ-THGX 03/2006 - 09/2008
E93 LCI through 10/2013
E60 LCI through 12/2009

It has to be, really :) All DZ gearboxes i have checked has got the 20 degree angle and diesel ratios, the E46/E39 x30d GS6-53DZ/GS5-39DZ and E9x 320d-330d GS6-37DZ/53DZ gearboxes for example is commonly used on turbo builds over here.
The E9x 335i GS6-53BZ is getting more common because of 30 degree angle and better gearing ratios.

[The Dark Side of Will]

That has to be an error on realoem. Just check the ratios :)

;) That must be it.

I think the tag will be sufficient for determining which configuration it is.
I'll have one of each... I'll be getting tooth counts all over the place.

OBTW, here are the configuration identifiers:

GS6-53BZ-THGZ 02/2002 - 07/2010
E60 LCI through 12/2009

GS6-53BZ-THA9 01/2009 - 06/2013
F10 through 06/2013

GS6-53DZ-THGX 03/2006 - 09/2008
E93 LCI through 10/2013
E60 LCI through 12/2009

[Nisse Järnet]

Going to make me whip it out, eh?
E90 335i DZ:

http://www.realoem.com/bmw/enUS/showparts?id=VB73-USA-03_2006_E90_BMW_335i&diagId=23_0926#23007571423

E60 LCI 550i BZ
http://www.realoem.com/bmw/enUS/show...36#23007571425

That has to be an error on realoem. Just check the ratios :)

[The Dark Side of Will]

As long as one can make one's own button, a Tilton is actually cheaper than an aluminum flywheel & performance clutch combo typically sold for BMW's, especially V8's and/or the S62.
The Tilton pressure plate is about $500 and the disks are about $200.
UUC's clutch & flywheel combos for the E39 M5 *START* at $1800, but that company isn't exactly known for bargain prices.

[nando]

yeah, but not cheap.

[The Dark Side of Will]

I would have said "all out" would be a Jerico, Lenco or Weismann...

A dual organic QM or organic/ceramic Tilton is supposedly fairly street friendly.

[nando]

interestingly, the N series motors still have the hole for the pilot bearing in the crankshaft (the M20 bearing is a direct fit).

but yeah, if you're going all out it probably doesn't make a big difference.

[The Dark Side of Will]

I haven't discussed a clutch much yet because I was expecting to use a Tilton or Quartermaster dual disk 7.25" unit. I'd use an M62 flexplate with a custom made "button" bolted down on top of it to act as the friction surface and clamping face for the clutch. I can easily make that part taller to account for a shorter input shaft, and make it to accept the pilot bearing as well. It's probably easier that way as I can use the correct pilot bearing for the transmission and don't have to worry about finding one that fits both the crank bore and the input shaft.

[nando]

Just an FYI - if you're looking at transmissions from later BMWs, they have a shorter input shaft - and the pilot bearing is part of the flywheel, rather than going into the crank. Basically any of the "N" series motors have transmissions with the shorter shaft. And at least some quantity of those engines have flywheels with a 6 bolt pattern instead of 8.

[The Dark Side of Will]

Even the e90/e91 335d was offered as a manual over here if I'm not mistaken.

RealOEM disagrees:

No manual transmission listed for US cars:

http://www.realoem.com/bmw/enUS/partgrp?id=PN73-USA-11-2007-E90N-BMW-335d

No manual transmission listed for Euro cars:

http://www.realoem.com/bmw/enUS/partgrp?id=PN71-EUR-05-2008-E90N-BMW-335d

I initially only checked 335d's, but the 325d's and 330d's do come with -53DZ's

http://www.realoem.com/bmw/enUS/partxref?id=PR91-EUR-07-2007-E90N-BMW-330d&mg=23&sg=05&diagId=23_1066&q=23007582711&series=E90N

But that doesn't change the fact that all the turbo 6 cylinder gas cars that I checked on *also* came with the DZ trans, and only the V8's received the BZ.
BMW did eventually "downgrade" the turbo 6's to the GS6-45BZ, and entirely stopped offering manual transmissions with the V8's.