BMW gearbox specs from Getrag

[3wings]

I'm now 100% convinced my 3-part box is a 265 but I'll still need the bellhousing with the sensor holes as the M88 picks up from the flywheel.

If anyone knows the correct part number for that bellhousing section that would be great !

The 2-part box with the 2600106091 number is still a mystery and I've been working on it most of the day !

I saw one post from a guy with a 633CSi somewhere who had almost the same number (he missed out the #6) but that's about the closets I can get.

I also cannot find any reference to the stamped numer "015 151 NS"

Does anyone know what this number refers to or what it means ?

[Bentsdl]

BMW part number for the bellhousing: 21 11 1 225 493
http://bmwfans.info/parts/catalog/E2..._bell_housing/

You can check all part number and assamblies on www.bmwfans.info
A treasure of info on all bmw's and parts!

[FernandoBunster]

I have a Getrag 265 currently on my workbench. I just checked the numbers on the back of the housing which are:

1225 492 .9

also another set of numbers below these are: B120

Also: GD-AISi8Cu3

This bellhousing has the Motronic pick ups for the reference sensors

[alpinacsi]

I'm now 100% convinced my 3-part box is a 265 but I'll still need the bellhousing with the sensor holes as the M88 picks up from the flywheel.

If anyone knows the correct part number for that bellhousing section that would be great !

The 2-part box with the 2600106091 number is still a mystery and I've been working on it most of the day !

I saw one post from a guy with a 633CSi somewhere who had almost the same number (he missed out the #6) but that's about the closets I can get.

I also cannot find any reference to the stamped numer "015 151 NS"

Does anyone know what this number refers to or what it means ?

Ok. you know that the 2-part box had the bosses for the motronic sensors but they were not drilled. This rules out the possibility that it was used in a 633 because they would have been needed for the motronic.

We know that the later motronic units used the crank position sensor and did not need the ports on the bell housing; as your unit was constructed.

The early 260/5 did not have fins on the bottom of the case but the later ones did.

Here is the part that really seems to answer your questions. The box came from a e34 m5 and you can go see the car it came from. They did not use a 260 trans, ever. They use a 280 if it is a 5spd. The e34 non M did use the 260 for some applications. Serial # will tell a lot

Pictures will help identify any unit because the casting marks really do not help most of us very much.

[3wings]

[QUOTE=alpinacsi;16472479]
Here is the part that really seems to answer your questions. The box came from a e34 m5 and you can go see the car it came from. They did not use a 260 trans, ever. They use a 280 if it is a 5spd. The e34 non M did use the 260 for some applications. Serial # will tell a lot
QUOTE]


Well, the seller told me it came from a 1991 E34 M5 and invited me to go see the donor car if I wanted to, but as somebody pointed out earlier, the donor car is now 18 years old and maybe the gearbox was exchanged at some point down the line ??

I now understand that the casting numbers tell us very little, for example I now know that I have a 265/5 inside a casing with 262 as the first three digits. I'm entirely relaxed now about that box.

But the other one.....

Could it be possible therefore that I have a 280/5 inside a casing with the first three digits 260 ?

I'll get images of the box on Monday and post them here. Meanwhile if anyone has any ideas on where I can actually see an image of a positively identified 280/5 it would be great to see them for comparison.

[ILikeCoupes]

Interesting point....now let me ask is there are removable bell housing that works for the 528e and the 265's?

I don't think anyone answered this. The '82 and '85 528e's had Getrag 265 5 speeds using a bellhousing that fits the small sixes. It was only those two years and I'm not positive about the '85s. I had an 82 528e 5 speed and the bellhousing is quite different from the big six bellhousings.

Other than the above, big six transmissions won't fit small sixes and vice-versa.

[3wings]

Here's a couple of images of the two-part Getrag box (casting number 02600106091) bolted onto the M88 powerplant. Note the two fins at the back, does this mean that its a later 260 ?

Several people over here are telling me that this is a Getrag box from a baby six and won't have enough torque to handle the M88 engine.

But if its off a baby six, it shouldn't bolt straight onto the M88 right ?

And if its a baby six Getrag then how come it (supposedly) came out of an M5 ?

Just found out that I can't post images untill I've posted 15 times or been a member for two weeks. I could email them to someone if they'd then post them for me ?

[Bentsdl]

Here are the pics from 3wing's tranny:




Here are assy's from bwminfo.org:

260/6:


280/5:


Notice the intermiate housing piece from the 280/5 and how the underside of the most forward housing looks. Imo your trans has the most resemblance with the 260/6, on the other side, look where the drain plug is located.....
Hopefully someone here can take some pics of his/her 280.

Edit: found a pic of a 280:



This one definitly has a extra section in the middle and different underside of the front part. My guess is that you have a 260/6 there. Hopefully it's '86 or later, those should be very good boxes.
Ohh and btw, what is that bmw gearbox doing in a ferrari?

[alpinacsi]

Not sure what happened to my last post but it looks like Bent has answered already. The thin intermediate section seems to be the key.

What is stamped to the forward mounting flange under the sensor bosses? Could be the chassis # and could tell what the donor was.

[Bentsdl]

Here are some extra pics of 3wing's tranny, this time removed from the car:



My guess would a 260. Is there a difference between the 260's offered in the e30 325i (baby six) and sixers (big six)?. But I'm sure 3wings will post the extra info he got.

[3wings]

Thanks to Bent for posting those images.

We removed the box today and found some numbers inside the bellhousing:

In a small circle 88 over 87. In larger numbers 1.1 and 225 and around the crank boss 260.0 followed by 1062.00

I've since found a couple of 320i and 325i Getrag's for sale on Ebay, although I'm not allowed as yet to post the URL's but I'm sure you can find them.

The images of those baby-six getrags look very much like mine so I think I've been duped!

Although the guy said it came from an M5 it is not the original 280/5 with the obvious middle section as seen in Bent's posts above.

Looks like my Getrag is from either a 325i or a 320i which have a Power Max DIN of 120kw and 92kw respectively......way under the 210kw that my M88 can deliver.

I'm big enough to hear the truth guys.......,

So what have I got here...is it a baby-six box ?

Come on guys, what's your verdict ?

[alpinacsi]

I still do not believe it is a baby 6 trans as it would not bolt up to the M30 or M88. Have you posted the numbers that you can see on the boss below the sensor area that you can see in one of your under car shots?

Sure looks like the 260 from a e32/e34 3.5l.

[Bentsdl]

The numbers below the sensor area are: 015151 NS not a VIN as far as I know.

Metricmecanic states indead a "baby six bold patern" for the bellhousing of 260 made for the M20. So the gearbox from 3wings must be a 260 from a big six. I've picked this up from the net:

"The 260/5 was Getrag/BMW's first attempt at developing a single piece case
transmission. In the US cars, the 260/5 was used in all M20/M30 engined cars
(with appropriate bellhousing/bolt pattern for engine type) from '82 through
'84. It was found that the 260/5 wasn't strong enough to deal with the M30's
torque output.

In the '85 model year, all 5-sp equipped M30 engined BMWs received the
G265/6 without the speedo drive and a bellhousing setup for the Motronic
speed/reference sensors.

From '86 till the end of production, BMW installed an improved G260/6 in all
M30 engined with manual 5-speeds. The G260/6 is basically the G265 internals
inside of a one piece case and is every bit as strong as the G265. In all
reality the single piece case is probably stronger from a rigidity
standpoint."

If this is true you don't have a bad gearbox after all! It would be excactly what you are looking for, a strong tranny with good cruising and mpg gearing.

[3wings]

Wow, if it was ever possible to be more confused I am now !

Basically from what you're saying, I do have the 265, (presumably with molybdenium rings replacing the earlier brass synchros ??) but not in the standard and easily recognisable 3-part casing with removable bellhousing, but in a two-part fixed bellhousing box.

So I don't need to worry ???

Can I please call for some back-up here, with absolutely no offense to Bent but the more support I get for this hypothesis the better.

Maybe this thread could develop into the DEFINITIVE info source on BMW Getrag boxes so that we all NEVER have to worry about this problem EVER again !!

[Bentsdl]

A litlle update: I've possibly found a bellhousing for 3Wings' G265 and M88.
The seller told me it's from a 1983 E23 732i. Hopefully someone can identify if this is really the one we are looking for.

Thanks!

[alpinacsi]

A litlle update: I've possibly found a bellhousing for 3Wings' G265 and M88.
The seller told me it's from a 1983 E23 732i. Hopefully someone can identify if this is really the one we are looking for.

Thanks!

Yes. That should have been a 4 spd motronic car but the bell housing doesn't care if it holds the 4 spd, 5 spd or sport unit.

[Layne]

A litlle update: I've possibly found a bellhousing for 3Wings' G265 and M88.
The seller told me it's from a 1983 E23 732i. Hopefully someone can identify if this is really the one we are looking for.

Thanks!

It sounds like you are suggesting you can put this removable bellhousing onto the above pictured transmission which does not have a removable bellhousing. Admittedly I have not been paying close attention to this thread, but what are you talking about?

[Bentsdl]

Hehe nope, 3wings has 2 trannys, 1 G265 without bellhousing, and 1 what we think is a 260/6 from 87(later?). The 265 should be the better gearbox, especialy with the M88 he's using. So I've tried to find one for him, as they are almost impossible to find in South Africa. The one in my pics is only $40 here in the netherlands, so even after shipping it to SA it's still a good deal. But it might be a good idea to know for sure this is the correct bellhousing before we're going to send stuff to the other end of the world.
That's what we're talking about, still follow?

[alpinacsi]

I follow except: that 260/6 is not from 1985. If it were, it should have fins on the bottom of the case and the sensor holes should have been machined. Now if you said 87 or later; I would follow that as well.

[Bentsdl]

Whoops you're right, I got mixed up with all those numbers.

[cavjmz]

I am converting my E24 BMW from 4HP22 automatic with basic motronic mcu. I have the getrag 265/5 transmission with a separate bell housing that has two holes for the speed and reference sensors but I can not find a flywheel with the dowel for the reference sensor - can anyone help me out on this search?

Thanks

[sixseries]

I don't think anyone answered this. The '82 and '85 528e's had Getrag 265 5 speeds using a bellhousing that fits the small sixes. It was only those two years and I'm not positive about the '85s. I had an 82 528e 5 speed and the bellhousing is quite different from the big six bellhousings.

Other than the above, big six transmissions won't fit small sixes and vice-versa.

true, unless the bellhousing is removable and you can just swap them

[jmitro]

More help needed for tranny ID: this is from a US 84 633Csi, but I suspect the tranny may have been swapped at some time. It's a standard 5 spd, integral bellhousing, and horizontal cooling fins on the bottom. Plus it has paint marker on the side that appears to say "88". I suspect it's a later model 260 transmission (based on another post by alpinacsi, I think it's a 260/6). Can anyone help? Where do I find the VIN on the tranny?

[Bentsdl]

Yeah, my guess would be a 260/6 too, 88 would be a logical mfd. The numbers cast on the tranny are only the factory-numbers for the different housings.

[6erWEBB]

A south african already asked the question but it wasnt answered... also Im bumping this thread because it seems like everyone has different info on getrag dogleg transmissions.

Ive had one, which was PN 2620051000. as far as I know it came from an 81 euro 635csi. Definitly a 1:1 fifth.

Ive just agreed to buy another based on part number alone... but the casting numbers below it worry me and Im curious of their meaning. So far Ive gotten no info on the subject.

The number on the trans is 2620051090 which Im discovering came in e30 m3's? the numbers below it are 225 and 2.3... what are the meanings of these numbers and do they mean its not a dogleg for any reason?

Also, was there ever an overdrive dogleg box made?