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 Getrag 280 Synchros
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Marty
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Posted - Jul 04 2004 :  12:04:20  Show Profile  Reply with Quote
I'm getting ready to replace my clutch and I want to replace the synchros while the transmission is out. I was hoping to get a synchro kit for the Getrag 280 but haven't had any luck finding parts, let alone a kit for the Getrag, anywhere but the dealer. Any suggestions?

scottie
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Posted - Jul 05 2004 :  22:54:17   View scottie's Photo Gallery  Show Profile  Visit scottie's Homepage  Send scottie an AOL message  Reply with Quote
Have you tried www.partsforbmws.com ?

Scottie Sharpe
San Jose CA
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tihuovin
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Posted - Jul 06 2004 :  09:37:17  Show Profile  Reply with Quote
According to ETK, the synchronizer ring's are the same than in Getrag 260/6. That transmission has been used in E23/732 and 735, E24/635CSi and M635CSi, E28/535i, M535i, as well as E32/730iLM30, 730iM30 ad 735i and E34/530iM30 and 535.

So they shouldn't be so rare and therefore expensive and hard to get.

BR,
Timo

PS. BMW part number 23 23 1 224 325

Edited by - tihuovin on Jul 06 2004 09:38:00
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E30-E28 guy
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Posted - Jul 07 2004 :  11:09:42  Show Profile  Reply with Quote
If your trans has bad syncros, it may need a rebuild. If you do in fact go that way, this is your guy:

Blanton Transmissions
1427 West 9th Street
Kansas City, MO 64101
816-221-8584

jblanton@sky.net

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Marty
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Posted - Jul 11 2004 :  10:05:26  Show Profile  Reply with Quote
Thanks for the info guys. What I've discovered so far is that anything you want for a Getrag 280 is available - so long as you buy it from a BMW dealer. Apparently before the late 90's, Getrag opted to leave parts distribution and support up to the auto manufacturers who used their transmissions.

Synchros run $100 - $130 ea. which doesn't too bad until you find that an entire synchro & seal kit for a Muncie or Borg-Warner is $70-90.

I'm going hold off on deciding what to do with the transmission until I get it apart and see what it needs. A full rebuild I will leave to a pro, or go with a Getrag 265 with an M30 bell housing. If it is just a couple worn synchros, some seals and a bearing or two, I'll fix the sucker up and keep it.

In any case I'll keep you posted, I'm sure I'm not the only one out there that despises grindy downshifts and would like to get rid of the problem.

Marty
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Marty
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Posted - Dec 07 2004 :  18:08:34  Show Profile  Reply with Quote
Finished the transmission and it was worth the trouble. New clutch, new synchros, a few seals and bearings. Installed a short shift kit and a new guibo too. The Getrag 280 isn't too bad to take apart; until you get to the gear stack. The stack is held together by press fit gears. No clips, no splines, just a bitchin' tight press fit. There is a 'special tool' for taking this apart, if you don't have it, don't event try to get it apart. I opted to tear it down and send the stack and new synchros to a guy in Conn. who has the 'special tool'(dang, I wish I had a special tool). He did the job in about an hour and shipped it back. The synchros have a (presumably) moly coating on the working part of the brass that is responsible for creating the friction needed to match shaft speeds. Hard shifts (especially downshifts) under heavy loads wear this coating off or smear it smooth and the synchro stops working. I was kind of suprised how good the 'bad' synchros looked (pics available). Overall internal condition of the Getrag 280 with 140K on it was good, really good. The design and materials are first rate. Shifting now is a little notchy (characteristic of the short shift kit) but still smooth overall and very precise. Coupled with a fresh clutch and resurfaced flywheel it really improves the way the car drives.
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scottie
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Posted - Dec 07 2004 :  19:38:49   View scottie's Photo Gallery  Show Profile  Visit scottie's Homepage  Send scottie an AOL message  Reply with Quote
Interesting! Do you have a parts list and the Conn guy's contact info?

Scottie Sharpe
San Jose CA
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Marty
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Posted - Dec 08 2004 :  08:11:10  Show Profile  Reply with Quote
Here's the bare minimum parts, didn't keep record of the bearings:

07-11-9-937-220 Plug
07-11-9-937-228 Plug
07-11-9-937-248 Cover
23-12-1-224-300 7-cover M5/M6 Trans.
23-12-1-205-340 output seal
23-12-1-220-619 seal
23-12-1-282-394 seal shift shaft
23-12-7-527-439 cover
23-12-1-228-274 syncro
23-12-1-228-275 syncro
23-12-1-228-276 syncro
23-12-1-228-317 syncro

The short shift kit, clutch kit, and guibo all came from Bavauto.

Here's the place with the special tool:

Eriksson Industries
146B Elm Street
Old Saybrook, CT 06475
(800) 388-4418
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tihuovin
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Posted - Dec 09 2004 :  01:33:41  Show Profile  Reply with Quote
I might need this info, hence I need to replace at least the bearings, they are a bit noisy. Not too "embarrassing" at the moment (i.e. the others will hear it which embarrass me most), but maybe in the future they will. I think the gear 3 and 5 are in the same axis,and those are the most noisy gears.

I have getrag 265, but I think those parts are mostly applicable.

BR,
Timo

Edited by - tihuovin on Dec 09 2004 01:34:35
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scottie
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Posted - Dec 09 2004 :  09:08:54   View scottie's Photo Gallery  Show Profile  Visit scottie's Homepage  Send scottie an AOL message  Reply with Quote
Thanks!

Scottie Sharpe
San Jose CA
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88 Dinan M5
1968 2002


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tryskriel
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Posted - Nov 02 2006 :  10:05:22  Show Profile  Reply with Quote
i
I have seen that you rebuilt your tranny. I have a E34 535i turbo and my 3 gear
will make noise and don't want to enter if i want to make a fast shift so i was
thinking about rebuilt synchro because i did a thicker head gasket job at same
time but was wondering where you did buy the parts you gave on the post you made
and how much it did cost
When i did buy the car 6 month ago, the bearing of the clutch had failed so i
have to drive it without a clutch and it may be the cause of this failure
Thanks
Fred


E34 535i turbo
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