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Re: Please help id gearbox

Posted: Thu Oct 14, 2021 12:05 am
by uwbuurman
Jeroen wrote: Wed Oct 13, 2021 9:46 pm Reverse switch on top, my money would be on eco/overdrive 5-speed
+1

Does it have a speedo cable acces?

Re: Please help id gearbox

Posted: Tue Oct 19, 2021 8:58 am
by Amur73
I'm going to double check at the next opportunity.

Re: Please help id gearbox

Posted: Tue Oct 19, 2021 11:01 pm
by TaylorGoesFast
uwbuurman wrote: Mon Oct 11, 2021 7:19 am Size says it all, and the difference between 4 and 5 speed is the length. Argree with Jeroen, pic of the whole thing, from the side is all we need to determin.
Late 5 speed is shorter than the 4 speed.

Re: Please help id gearbox

Posted: Tue Oct 19, 2021 11:05 pm
by Amur73
3771489 wrote: Tue Oct 12, 2021 7:57 pm In highest spot gearbox is flat surface and stamped some numbers + two letters.
Those letters:
T or BO -> m10 Getrag 245 CR
BJ or GJ -> m20 Getrag 245 CR
BN,GH or GL -> m10 Getrag 245 OD
GC,GG or GM -> m20 Getrag 245 OD
ME,MF -> m10 Getrag 240 OD
MG -> m20 Getrag 240 OD
CR = "sport" and OD = overdrive

Would you mind marking this place (stamped numbers) on some example photo please?

Re: Please help id gearbox

Posted: Wed Oct 20, 2021 6:31 am
by 3771489
Image

Re: Please help id gearbox

Posted: Wed Oct 20, 2021 7:30 am
by Amur73
Thank you!

Re: Please help id gearbox

Posted: Wed Oct 20, 2021 11:45 am
by uwbuurman
TaylorGoesFast wrote: Tue Oct 19, 2021 11:01 pm
uwbuurman wrote: Mon Oct 11, 2021 7:19 am Size says it all, and the difference between 4 and 5 speed is the length. Argree with Jeroen, pic of the whole thing, from the side is all we need to determin.
Late 5 speed is shorter than the 4 speed.
Is that a fact? Never seen that.

Re: Please help id gearbox

Posted: Wed Oct 20, 2021 12:10 pm
by Jeroen
Only with the very latest 5 speeds, these do not have the extension anymore and are a few cm's shorter than the 4-speed indeed.

Re: Please help id gearbox

Posted: Wed Oct 20, 2021 3:19 pm
by 3771489
They are not.

Back: 242 (4-speed)
Middle: 240 (latest 5-speed)
Front: 245 (5-speed)

Image

Re: Please help id gearbox

Posted: Thu Oct 21, 2021 12:48 am
by uwbuurman
3771489 wrote: Wed Oct 20, 2021 3:19 pm They are not.

Back: 242 (4-speed)
Middle: 240 (latest 5-speed)
Front: 245 (5-speed)

Image
This is what I remember. No way a late 5 speed is shorter than the 4 speed. The photo says it all. Tnx!

Re: Please help id gearbox

Posted: Mon Oct 25, 2021 3:11 pm
by TaylorGoesFast
I guess https://www.bmwe21.net/?page_id=124 needs to be updated then :D

Re: Please help id gearbox

Posted: Mon Oct 25, 2021 5:04 pm
by Jeroen
Info's already there, just scroll down. Has been there for a while already.