Getrag transmission numbers decoding
- Thread starter Bmachine
- Start date
As far as I can tell, this 262.0.510.00 refers to a 265. Unlike what any of the numbers on the casing seem to indicate.
Some info I found, although not referencing casing numbers says this:
All credit to user Chris Wright on bigcoupe.com
http://www.bigcoupe.com/phpBB2/viewtopic.php?t=18798
An explanation of how to count the transmission case pieces:
In this article (and many others), the bell housing is not counted as a piece of the transmission case. The transmission may be made up of an Main case and a Tail piece bolted to it (2 piece transmission) or a Main case, Intermediate section and Tail piece all bolted together (3 piece transmission). The bell housing may be an integral casting with the Main case or it may be a separate bolt on piece, but if so, it is not counted as a transmission piece. The reference to fins are the cooling fins cast into the bottom of the case.
_______
Basically on the e12 based cars before 06/82, the following transmissions were found:
262/(9?) - 2 piece aluminum case with removable bell housing - No fins - No Intermediate section - 4 speed was used in cars up to '79
265/6 ----- 3 piece aluminum case with removable bell housing - No fins - 97mm Intermediate section - 5 speed OD, used in '80 to '82**
The e28 based cars were all 5-speed OD (except the CR*) and included:
260/5 - 2 piece aluminum case with integral bell housing ---- No fins - No Intermediate section, was used in the '83 - '84 cars,
265/6 - 3 piece aluminum case with removable bell housing - No fins - 97mm Intermediate section, - used again only in '85
260/6 - 2 piece aluminum case with integral bell housing ---- With fins - No Intermediate section, was used in '86 and on
280/5 - 3 piece aluminum case with integral bell housing ---- With fins - Small Intermediate section, was for the ///M cars
265/5 CR* - 3 piece aluminum case with removable bell housing - No fins - 97mm Intermediate section - with the "dogleg" shift pattern and no Overdrive, used in Euro 635's from '79 to '84
The 260/5 developed problems and was pulled from production in '85 and the 265/6 was used again for the one year until the stronger 260/6 was introduced to replace it. You tell the more desirable 260/6 over the 260/5 by the fact that the 260/6 has the fins on the bottom. The 265 is considered by many as the most desirable, but you have to make sure the bell housing has the required sensor mounting holes if you are installing it in a car with Motronic, only the '85 had them in the US.
*CR = Close Ratio. Sometimes called the "265 Sport", it has a different, "Dogleg" sift pattern with 2nd, 3rd, 4th and 5th on the "H" pattern legs, and "R" to the left and up and 1st to the left and down with no OD. The 280/5 is also a close ratio box but with the normal shift pattern and OD.
**If you are doing an Auto to Manual transmission swap, the 265/6 bell housings, on the '80 to '81 US Spec. L-Jet cars, don't have the holes to mount the Motronic sensors. In 9/'81 Motronic was introduced to the e12 based 633, so the '82 US Spec. cars have Motronic, so they should have the mounting holes. The 265/6 housings in the '81/'82 Euro's and and '85 US Spec. cars have the mounting holes also. A good choice would be an '82 528E. The engine puts no real stress or abuse on the tranny and it bolts right up and have the sensor mounting holes.
FYI - Three Series transmission:
245 - 3 piece aluminum case with integral bell housing ---- No fins - (97mm?) Intermediate section, was for the M10/M20 Eng. - M10 will bolt up but need a smaller flywheel/clutch to fit. No sensor mounts in bell housing.
_______________________________
The ratios for the 260/5, 260/6 and the 265/6 are:
1st - 3.83 : 1 - (3.82 for the 265/6)
2nd - 2.20 : 1
3rd - 1.40 : 1
4th - 1.00 : 1
5th - 0.81 : 1 - (Overdrive)
reverse - 3.46 : 1 - (3.71 for the 265/6)
Oil Capacity - 2.65 Pts. or 1.25 Ltr. - (3.4 Pts. or 1.6 Ltr. for the 265/6)
The ratios for the 280/5 are:
1st - 3.51 : 1
2nd - 2.08 : 1
3rd - 1.35 : 1
4th - 1.00 : 1
5th - 0.81 : 1 - (Overdrive)
reverse - 3.73 : 1(?)
Oil Capacity - 2.65 Pts. or 1.25 Ltr.
The ratios for the 265/5 CR are:
1st - 3.72 : 1
2nd - 2.40 : 1
3rd - 1.77 : 1
4th - 1.26 : 1
5th - 1.0 : 1
reverse - 4.23 : 1
The ratios for the 4 Speed 262/(?) are:
1st - 3.86 : 1
2nd - 2.00 : 1
3rd - 1.40 : 1
4th - 1.0 : 1
reverse - 4.23 : 1
_____________
265/6 - 3 piece aluminum case with removable bell housing - No fins - 97mm Intermediate section, - used in '80 to '82 and again in '85
Note this bell housing has the round castings for mounting the Motronic sensors at the bottom, left front of the bell housing.
_____________
Some info I found, although not referencing casing numbers says this:
All credit to user Chris Wright on bigcoupe.com
http://www.bigcoupe.com/phpBB2/viewtopic.php?t=18798
An explanation of how to count the transmission case pieces:
In this article (and many others), the bell housing is not counted as a piece of the transmission case. The transmission may be made up of an Main case and a Tail piece bolted to it (2 piece transmission) or a Main case, Intermediate section and Tail piece all bolted together (3 piece transmission). The bell housing may be an integral casting with the Main case or it may be a separate bolt on piece, but if so, it is not counted as a transmission piece. The reference to fins are the cooling fins cast into the bottom of the case.
_______
Basically on the e12 based cars before 06/82, the following transmissions were found:
262/(9?) - 2 piece aluminum case with removable bell housing - No fins - No Intermediate section - 4 speed was used in cars up to '79
265/6 ----- 3 piece aluminum case with removable bell housing - No fins - 97mm Intermediate section - 5 speed OD, used in '80 to '82**
The e28 based cars were all 5-speed OD (except the CR*) and included:
260/5 - 2 piece aluminum case with integral bell housing ---- No fins - No Intermediate section, was used in the '83 - '84 cars,
265/6 - 3 piece aluminum case with removable bell housing - No fins - 97mm Intermediate section, - used again only in '85
260/6 - 2 piece aluminum case with integral bell housing ---- With fins - No Intermediate section, was used in '86 and on
280/5 - 3 piece aluminum case with integral bell housing ---- With fins - Small Intermediate section, was for the ///M cars
265/5 CR* - 3 piece aluminum case with removable bell housing - No fins - 97mm Intermediate section - with the "dogleg" shift pattern and no Overdrive, used in Euro 635's from '79 to '84
The 260/5 developed problems and was pulled from production in '85 and the 265/6 was used again for the one year until the stronger 260/6 was introduced to replace it. You tell the more desirable 260/6 over the 260/5 by the fact that the 260/6 has the fins on the bottom. The 265 is considered by many as the most desirable, but you have to make sure the bell housing has the required sensor mounting holes if you are installing it in a car with Motronic, only the '85 had them in the US.
*CR = Close Ratio. Sometimes called the "265 Sport", it has a different, "Dogleg" sift pattern with 2nd, 3rd, 4th and 5th on the "H" pattern legs, and "R" to the left and up and 1st to the left and down with no OD. The 280/5 is also a close ratio box but with the normal shift pattern and OD.
**If you are doing an Auto to Manual transmission swap, the 265/6 bell housings, on the '80 to '81 US Spec. L-Jet cars, don't have the holes to mount the Motronic sensors. In 9/'81 Motronic was introduced to the e12 based 633, so the '82 US Spec. cars have Motronic, so they should have the mounting holes. The 265/6 housings in the '81/'82 Euro's and and '85 US Spec. cars have the mounting holes also. A good choice would be an '82 528E. The engine puts no real stress or abuse on the tranny and it bolts right up and have the sensor mounting holes.
FYI - Three Series transmission:
245 - 3 piece aluminum case with integral bell housing ---- No fins - (97mm?) Intermediate section, was for the M10/M20 Eng. - M10 will bolt up but need a smaller flywheel/clutch to fit. No sensor mounts in bell housing.
_______________________________
The ratios for the 260/5, 260/6 and the 265/6 are:
1st - 3.83 : 1 - (3.82 for the 265/6)
2nd - 2.20 : 1
3rd - 1.40 : 1
4th - 1.00 : 1
5th - 0.81 : 1 - (Overdrive)
reverse - 3.46 : 1 - (3.71 for the 265/6)
Oil Capacity - 2.65 Pts. or 1.25 Ltr. - (3.4 Pts. or 1.6 Ltr. for the 265/6)
The ratios for the 280/5 are:
1st - 3.51 : 1
2nd - 2.08 : 1
3rd - 1.35 : 1
4th - 1.00 : 1
5th - 0.81 : 1 - (Overdrive)
reverse - 3.73 : 1(?)
Oil Capacity - 2.65 Pts. or 1.25 Ltr.
The ratios for the 265/5 CR are:
1st - 3.72 : 1
2nd - 2.40 : 1
3rd - 1.77 : 1
4th - 1.26 : 1
5th - 1.0 : 1
reverse - 4.23 : 1
The ratios for the 4 Speed 262/(?) are:
1st - 3.86 : 1
2nd - 2.00 : 1
3rd - 1.40 : 1
4th - 1.0 : 1
reverse - 4.23 : 1
_____________
265/6 - 3 piece aluminum case with removable bell housing - No fins - 97mm Intermediate section, - used in '80 to '82 and again in '85
Note this bell housing has the round castings for mounting the Motronic sensors at the bottom, left front of the bell housing.
_____________
Last edited:
Is the middle case 97mm?
Yes it is
Looks like a 265/6, the other numbers are just casting numbers.
oz73csi
Member
I believe there are a number of 'tells' , easiest I think , is if the centre section was removed all the bolt holes line up on a CR , so I think you have a 265/6
- Messages
- 292
- Reaction score
- 74
It's not as easy to tell the difference from a right side photo, but that is a 265/6 overdrive transmission. Look at the round plug at the top right of the rear cover. The close ratio has a larger plug on a protruding boss, but the OD has a small plug more flush. (note that the CR uses the same rear cover as a 4 speed 262, the reason the bolt holes line up if you were to remove the center section)
A case where a picture is worth more than a thousand words for sure.
Thank you Chris and Oz73.
Excellent info and photos, Layne.
It's amazing that such a critical component does not have an easily identifiable part number that can readily tell you what you have.
I had done a search on the forum to find this info but did not come up with any definitive answer (which, in this case, is that the numbers cast on the tranny really don't tell you much of the story). So I figured I would start a thread title that could hopefully consolidate as much of that info as possible.
Excellent info and photos, Layne.
It's amazing that such a critical component does not have an easily identifiable part number that can readily tell you what you have.
I had done a search on the forum to find this info but did not come up with any definitive answer (which, in this case, is that the numbers cast on the tranny really don't tell you much of the story). So I figured I would start a thread title that could hopefully consolidate as much of that info as possible.
- Messages
- 292
- Reaction score
- 74
I determined the same thing with the cylinder head. I know these are Getrag transmissions but BMW changed the cylinder head casting without changing the casting number.
cdavie2002
Well-Known Member
Can anyone confirm what this is, and what type oil oil they take?
265.0 0510.90 (I think)
265.0 0510.90 (I think)
cdavie2002
Well-Known Member
Can anybody assist with identifying
You have a five speed
If you can show a photo of the other side then you can match it with what Layne explained above.
Wladek
Well-Known Member
According to the numbers 262.0.510.90 this is Getrag 265/5 (5-speed).
Last edited:
cdavie2002
Well-Known Member
cdavie2002
Well-Known Member
Can anyone confirm the oil needed...
Iv heard SAE75/85?
Iv heard SAE75/85?
That is a very different subject than what this thread is about.
You will have better luck 1) doing a search for "transmission oil". If that does not give you your answer, 2) starting a fresh thread with a clear title about transmission oil.
You will have better luck 1) doing a search for "transmission oil". If that does not give you your answer, 2) starting a fresh thread with a clear title about transmission oil.
50% each Redline MTL and 80/90 mineral gear oil.