Manual Transmission information
Manual Transmission information
08-11-2010, 06:35 PM
#43
Its not so much that the gear itself is weak, but the synchro mechanism/shifting is weak. I think this has to do with the once removed downshift from 5th to 4th through complex linkages primarily. On two of the boxes, the synchro clutch had failed, and on all three, there is excessive wear on the synchro over all the other gear synchros, which are simpler connections overall.
Careful on the downshift from 5th to 4th!
This post was last modified: 08-11-2010, 06:46 PM by JB3.
1974 240D 617 turbo swap, W201 5-speed, in the works project
1983 240D 616 stock, DD
1989 Chevy Astro, 617 turbo swap, T5 5-speed, 4.56 diff, work van
The weak point on the 190 5-speeds with 717.411 and 717.412 seems to be 4th gear, or 3rd/4th synchro. I have now been through 3 different boxes looking for one in decent condition, and all have exhibited failure or damage at that location.
Its not so much that the gear itself is weak, but the synchro mechanism/shifting is weak. I think this has to do with the once removed downshift from 5th to 4th through complex linkages primarily. On two of the boxes, the synchro clutch had failed, and on all three, there is excessive wear on the synchro over all the other gear synchros, which are simpler connections overall.
Careful on the downshift from 5th to 4th!
1974 240D 617 turbo swap, W201 5-speed, in the works project
1983 240D 616 stock, DD
1989 Chevy Astro, 617 turbo swap, T5 5-speed, 4.56 diff, work van
Messages In This Thread
Manual Transmission information - by winmutt - 06-10-2009, 02:13 PM
RE: Manual Transmission Part Numbers - by ForcedInduction - 06-19-2009, 03:14 PM
W123 manual ratios - by ForcedInduction - 06-27-2009, 06:15 AM
RE: Manual Transmission information - by ForcedInduction - 06-27-2009, 06:29 AM
RE: Manual Transmission information - by lgreeley83 - 06-30-2013, 09:06 AM
RE: Manual Transmission information - by Gasoline Fumes - 06-28-2009, 10:10 AM
RE: Manual Transmission information - by ForcedInduction - 06-28-2009, 09:00 PM
RE: Manual Transmission information - by Gasoline Fumes - 06-29-2009, 05:57 AM
RE: Manual Transmission information - by ForcedInduction - 06-29-2009, 06:08 AM
RE: Manual Transmission information - by Syncro_G - 07-27-2009, 10:54 AM
RE: Manual Transmission information - by ForcedInduction - 07-27-2009, 02:53 PM
RE: Manual Transmission information - by Nazrat - 08-07-2009, 08:24 PM
RE: Manual Transmission information - by Syncro_G - 12-14-2009, 02:13 AM
RE: Manual Transmission information - by Kozuka - 08-07-2009, 11:06 PM
RE: Manual Transmission information - by ForcedInduction - 08-08-2009, 12:02 AM
RE: Manual Transmission information - by Kozuka - 08-09-2009, 07:20 PM
RE: Manual Transmission information - by ForcedInduction - 08-09-2009, 07:28 PM
RE: Manual Transmission information - by charmalu - 11-28-2009, 02:10 AM
RE: Manual Transmission information - by ForcedInduction - 11-28-2009, 02:23 AM
RE: Manual Transmission information - by charmalu - 11-28-2009, 11:03 AM
RE: Manual Transmission information - by DeliveryValve - 11-28-2009, 01:08 PM
RE: Manual Transmission information - by charmalu - 12-19-2009, 03:30 AM
RE: Manual Transmission information - by Kozuka - 01-20-2010, 04:52 PM
RE: Manual Transmission information - by jankjerbye - 02-20-2010, 02:25 PM
RE: Manual Transmission information - by charmalu - 02-21-2010, 02:51 PM
RE: Manual Transmission information - by giezy - 02-21-2010, 10:45 AM
RE: Manual Transmission information - by winmutt - 02-22-2010, 07:54 AM
RE: Manual Transmission information - by ForcedInduction - 02-21-2010, 11:55 AM
RE: Manual Transmission information - by garage - 04-15-2010, 10:31 PM
RE: Manual Transmission information - by Kozuka - 05-05-2010, 10:33 PM
RE: Manual Transmission information - by ForcedInduction - 05-06-2010, 07:01 AM
RE: Manual Transmission information - by bmwpowere36m3 - 05-06-2010, 07:54 AM
RE: Manual Transmission information - by ForcedInduction - 05-06-2010, 08:08 AM
RE: Manual Transmission information - by Kozuka - 05-06-2010, 03:00 PM
RE: Manual Transmission information - by ForcedInduction - 05-07-2010, 07:08 AM
RE: Manual Transmission information - by Kozuka - 05-06-2010, 09:40 PM
RE: Manual Transmission information - by Kozuka - 05-14-2010, 07:26 PM
RE: Manual Transmission information - by ForcedInduction - 05-15-2010, 06:19 AM
RE: Manual Transmission information - by Kozuka - 05-16-2010, 03:11 AM
RE: Manual Transmission information - by swampmonkey - 06-01-2013, 05:25 PM
RE: Manual Transmission information - by Stamsaas - 07-11-2013, 04:09 PM
RE: Manual Transmission information - by Rudolf_Diesel - 06-07-2010, 10:29 PM
RE: Manual Transmission information - by willbhere4u - 06-07-2010, 10:58 PM
RE: Manual Transmission information - by MB Fleet - 07-02-2010, 03:09 AM
RE: Manual Transmission information - by willbhere4u - 07-02-2010, 10:04 AM
RE: Manual Transmission information - by dropnosky - 08-11-2010, 06:35 PM
RE: Manual Transmission information - by HughF_UK - 08-25-2010, 03:35 PM
RE: Manual Transmission information - by winmutt - 08-25-2010, 03:44 PM
RE: Manual Transmission information - by HughF_UK - 08-25-2010, 03:48 PM
RE: Manual Transmission information - by Alastair E - 08-26-2010, 04:09 PM
RE: Manual Transmission information - by willbhere4u - 12-19-2010, 09:09 PM
RE: Manual Transmission information - by Druk - 10-23-2011, 11:31 AM
RE: Manual Transmission information - by Kozuka - 10-23-2011, 01:43 PM
RE: Manual Transmission information - by Druk - 10-23-2011, 02:01 PM
RE: Manual Transmission information - by swampmonkey - 10-21-2013, 06:18 PM
RE: Manual Transmission information - by Kozuka - 10-24-2011, 12:47 AM
RE: Manual Transmission information - by Druk - 10-24-2011, 04:02 AM
RE: Manual Transmission information - by Kozuka - 10-24-2011, 10:36 AM
RE: Manual Transmission information - by W126Lover - 02-17-2012, 04:49 PM
RE: Manual Transmission information - by aaa - 02-18-2012, 06:34 AM
RE: Manual Transmission information - by hansebanger77 - 11-25-2012, 06:55 AM
RE: Manual Transmission information - by peter - 05-27-2012, 07:09 AM
RE: Manual Transmission information - by aaa - 05-27-2012, 10:38 AM
RE: Manual Transmission information - by Turbo - 07-03-2012, 01:19 PM
RE: Manual Transmission information - by edge - 07-03-2012, 09:08 AM
RE: Manual Transmission information - by Druk - 07-03-2012, 12:26 PM
RE: Manual Transmission information - by winmutt - 09-26-2012, 07:48 AM
RE: Manual Transmission information - by raysorenson - 09-27-2012, 09:19 AM
RE: Manual Transmission information - by winmutt - 09-27-2012, 05:03 PM
RE: Manual Transmission information - by aaa - 09-27-2012, 05:49 PM
RE: Manual Transmission information - by winmutt - 09-27-2012, 07:05 PM
RE: Manual Transmission information - by winmutt - 10-11-2012, 10:24 PM
RE: Manual Transmission information - by stig - 11-23-2012, 02:48 AM
RE: Manual Transmission information - by jellydonut - 12-12-2012, 07:05 PM
RE: Manual Transmission information - by raysorenson - 12-12-2012, 08:10 PM
RE: Manual Transmission information - by lgreeley83 - 12-29-2012, 04:56 AM
RE: Manual Transmission information - by winmutt - 12-30-2012, 03:52 PM
RE: Manual Transmission information - by lgreeley83 - 12-31-2012, 12:07 AM
RE: Manual Transmission information - by Alastair E - 12-30-2012, 04:58 PM
RE: Manual Transmission information - by winmutt - 12-31-2012, 03:50 AM
RE: Manual Transmission information - by Alastair E - 12-31-2012, 10:20 AM
RE: Manual Transmission information - by lpumb3 - 01-18-2013, 07:08 PM
RE: Manual Transmission information - by aaa - 01-18-2013, 09:09 PM
RE: Manual Transmission information - by lpumb3 - 01-25-2013, 02:13 PM
RE: Manual Transmission information - by lpumb3 - 01-19-2013, 01:02 AM
RE: Manual Transmission information - by HaavardPYA - 04-21-2013, 03:54 PM
RE: Manual Transmission information - by tjts1 - 04-25-2013, 04:17 AM
RE: Manual Transmission information - by HaavardPYA - 04-27-2013, 01:19 AM
RE: Manual Transmission information - by tjts1 - 04-27-2013, 03:16 PM
RE: Manual Transmission information - by aaa - 04-28-2013, 01:25 AM
RE: Manual Transmission information - by HaavardPYA - 04-29-2013, 10:02 AM
RE: Manual Transmission information - by tjts1 - 04-29-2013, 12:31 PM
RE: Manual Transmission information - by aaa - 06-30-2013, 10:33 AM
RE: Manual Transmission information - by lgreeley83 - 06-30-2013, 10:42 AM
RE: Manual Transmission information - by winmutt - 06-30-2013, 06:42 PM
RE: Manual Transmission information - by Stamsaas - 10-21-2013, 04:14 AM
RE: Manual Transmission information - by Stamsaas - 10-22-2013, 01:56 PM
RE: Manual Transmission information - by Jooseppi Luna - 11-01-2013, 04:49 PM
RE: Manual Transmission information - by barrote - 09-05-2014, 03:06 PM
RE: Manual Transmission information - by swampmonkey - 09-06-2014, 04:11 PM
RE: Manual Transmission information - by barrote - 09-07-2014, 05:08 AM
RE: Manual Transmission information - by swampmonkey - 09-08-2014, 01:48 AM
RE: Manual Transmission information - by barrote - 09-08-2014, 03:40 PM
RE: Manual Transmission information - by barrote - 09-09-2014, 01:56 PM
RE: Manual Transmission information - by benzguy - 09-09-2014, 08:00 PM
RE: Manual Transmission information - by Lambo_Rambo - 12-18-2014, 03:42 PM
RE: Manual Transmission information - by raidaru - 12-20-2014, 05:16 AM
RE: Manual Transmission information - by Suppatime - 01-03-2017, 04:17 PM
RE: Manual Transmission information - by benzguy - 01-04-2017, 11:11 AM
RE: Manual Transmission information - by Suppatime - 01-04-2017, 01:46 PM
RE: Manual Transmission information - by JoeB - 04-23-2017, 01:16 AM
RE: Manual Transmission information - by swampmonkey - 04-23-2017, 03:30 AM
RE: Manual Transmission information - by Misha - 07-15-2017, 07:09 PM
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