Recognising 5 speed gearboxes
Currently I am changing from 4 speed to 5 speed OD. I read in this thread I could change the 3 and 4 bolt flanges easily. This is not always the case! As you can see in the picture below the inner diameter can also be different. +/- 22 or 28 mm.
The 3-bolt unit is from a getrag 245
The 4-bolt unit is from my old 4 speed box.
Maybe someone has a 4-bolt flange with the small inner diameter available?
The 3-bolt unit is from a getrag 245
The 4-bolt unit is from my old 4 speed box.
Maybe someone has a 4-bolt flange with the small inner diameter available?
I didn't mean diameter of the propshaft but diameter of the output spline of the gearbox on which the 3 or 4 bolt flanges are fitted.
To fix my problem I can do any of the following:
1) get a 4-bolt flange with small diameter inner hole and shorten a driveshaft I already have.
2) Put the 3-bolt flange I have back on the gearbox and find a 3 bolt propshaft (preferably the right length)
We will see.
Regards,
Arnold.
To fix my problem I can do any of the following:
1) get a 4-bolt flange with small diameter inner hole and shorten a driveshaft I already have.
2) Put the 3-bolt flange I have back on the gearbox and find a 3 bolt propshaft (preferably the right length)
We will see.
Regards,
Arnold.
You need the flange from the 245, 2 32 11 209 612 is the part number. The 3 bolt flange is different on the 242, thats the problem.Arnold wrote:Currently I am changing from 4 speed to 5 speed OD. I read in this thread I could change the 3 and 4 bolt flanges easily. This is not always the case! As you can see in the picture below the inner diameter can also be different. +/- 22 or 28 mm.
The 3-bolt unit is from a getrag 245
The 4-bolt unit is from my old 4 speed box.
Maybe someone has a 4-bolt flange with the small inner diameter available?
[url=http://www.blackbmw.net][img]http://img.photobucket.com/albums/v505/madhatter_/weblink.jpg[/img][/url]
[size=84][b]- BMW E21 John Player Special Build, click to follow - [/b][/size]
[size=84][b]- BMW E21 John Player Special Build, click to follow - [/b][/size]
Yep thats the part I would need. But it costs something like 65 euro at BMW, and in that case I also have to shorten a driveshaft and hope its balanced enough. It might be cheaper and quicker to obtain a 3 bolt propshaft in the right length.
By the way how difficult is it to balance a propshaft using hoseclamps. I figured just place one on an unbalanced propshaft, drive, rotate the hoseclamp a bit, drive, etc. untill you find the best orientation for this hose clamp. next keep adding hose clamps to increase the balancing weight untill the vibrations are gone. Sounds good works bad?? Has anyone ever tried this?
Regards,
Arnold.
By the way how difficult is it to balance a propshaft using hoseclamps. I figured just place one on an unbalanced propshaft, drive, rotate the hoseclamp a bit, drive, etc. untill you find the best orientation for this hose clamp. next keep adding hose clamps to increase the balancing weight untill the vibrations are gone. Sounds good works bad?? Has anyone ever tried this?
Regards,
Arnold.
- Jeroen
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Hi Arnold,
Thanks for your contributions to this discussion... this should help get a complete picture.
What I've heard is that balancing the propshaft isn't that expensive (heard abt EUR 60??) so why would you bother going for such a potentially time consuming and by no means professional approach?
Thanks for your contributions to this discussion... this should help get a complete picture.
What I've heard is that balancing the propshaft isn't that expensive (heard abt EUR 60??) so why would you bother going for such a potentially time consuming and by no means professional approach?
Regards/groeten, Jeroen
Yes, I would imagine that it can be VERY time consuming indeed since you have to jack up, and get under the car a milion times.
I just called a company in Oosterhout NB (Rietveld Aandrijfassen B.V.)
They shorten and balance the propshaft for me for 130 euro's.
All of this illustrates once more what I have read before: if possible always get the gearbox together with the matching propshaft.
I just called a company in Oosterhout NB (Rietveld Aandrijfassen B.V.)
They shorten and balance the propshaft for me for 130 euro's.
All of this illustrates once more what I have read before: if possible always get the gearbox together with the matching propshaft.
cool, tnx J.
I got mine last friday. It looks like a "normal" 5 gear OD one. But ill just mount the gear stuff on it tomorrow and see what it does.
Anyway, the guy i got it from was sure it was a sports 5-gear boz and not a OD one. He said he got it from an M3! Hmmm. Not to sure if its a sports version now
I got mine last friday. It looks like a "normal" 5 gear OD one. But ill just mount the gear stuff on it tomorrow and see what it does.
Anyway, the guy i got it from was sure it was a sports 5-gear boz and not a OD one. He said he got it from an M3! Hmmm. Not to sure if its a sports version now
- Jeroen
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How many M3's have a M20 engine then? So... b*llsthit!ac/dennis wrote:Anyway, the guy i got it from was sure it was a sports 5-gear boz and not a OD one. He said he got it from an M3! Hmmm. Not to sure if its a sports version now
Hmmmm silly me... I drove a M20 powered M3 yesterday... well that one obviously wasn't completely original.
Regards/groeten, Jeroen