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risk
Samba Member
Joined: June 24, 2004
Posts: 710
Location: Stumpbroke, Arkansas
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 Posted: Thu Mar 13, 2008 7:06 pm Post subject: grinding going into 2nd gear |
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Earlier this winter, during one of our coldest days here, I shifted into 2nd gear and got a bad grind. The 2nd gear grinding persisted... I adjusted the clutch some, but 2nd gear still grinds, unless I time the shift very carefully and slow. Downshifting into 2nd grinds regardless of timing or engine rpm.
Did I bend or break my 2nd gear synchro? 67 sedan, all stock, and trans is rebuilt, stock 1600DP, new mounts, coupler and bushing, and all other gears shift fine. any way to fix it without tearing the trans down?
Thanks!
j. risk |
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glutamodo 
The Android
Joined: July 13, 2004
Posts: 26311
Location: Douglas, WY
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| Posted: Thu Mar 13, 2008 8:03 pm Post subject: |
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| I'd suspect a bad syncro, unfortunately. |
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Russ Wolfe
Samba Member
Joined: October 08, 2004
Posts: 25187
Location: Central Iowa
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| Posted: Thu Mar 13, 2008 8:10 pm Post subject: |
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What are you using for gear oil.
I have heard rumors that some synthetics, or GL5 will cause syncro's to not work the best in the older VW transmissions.
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Gary: OK. Ima poop. |
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chiroracer
Samba Member
Joined: August 03, 2006
Posts: 332
Location: long beach
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| Posted: Thu Mar 13, 2008 10:28 pm Post subject: |
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Syncros,try different lube or double clutch and match revs. S
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candyman
Samba Trout Slayer
Joined: December 20, 2003
Posts: 2694
Location: Missoula MT
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| Posted: Fri Mar 14, 2008 10:01 am Post subject: |
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syncros for sure. good news is you can still drive for some time with wearing syncros. not an immediate cause for alarm. i have been driving with bad syncros on one of my rigs for 4 years now, interesting it hasn't gotten any worse  |
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akokarski
Samba Member
Joined: May 24, 2004
Posts: 1896
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| Posted: Fri Mar 14, 2008 11:09 am Post subject: |
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| Russ Wolfe wrote: |
What are you using for gear oil.
I have heard rumors that some synthetics, or GL5 will cause syncro's to not work the best in the older VW transmissions. |
urban legend |
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Russ Wolfe
Samba Member
Joined: October 08, 2004
Posts: 25187
Location: Central Iowa
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| Posted: Fri Mar 14, 2008 9:28 pm Post subject: |
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| akokarski wrote: |
| Russ Wolfe wrote: |
What are you using for gear oil.
I have heard rumors that some synthetics, or GL5 will cause syncro's to not work the best in the older VW transmissions. |
urban legend |
BS, I have been building these trannies for over 40 years. How long you been doing them.
GL5 doesn't destroy the syncros, they just don't work as well.
But GL4 will destroy a T-2/T-3/T-4 differential.
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Society is like stew. If you don't keep it stirred up, you end up with a lot of scum on the top!--Edward Abbey
Gary: OK. Ima poop. |
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Bruce
Samba Member
Joined: May 16, 2003
Posts: 17285
Location: Left coast, Canada
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| Posted: Fri Mar 14, 2008 10:42 pm Post subject: |
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| Russ Wolfe wrote: |
| ..... GL4 will destroy a T-2/T-3/T-4 differential. |
I'll agree with that.
Type 1 too.
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Bren
Samba Member
Joined: September 21, 2003
Posts: 368
Location: Battle Creek, Michigan
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| Posted: Sun Mar 16, 2008 5:58 pm Post subject: |
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So, for the original posters specific situation, what specific gear oil would you switch to? I am having the same problem. Is there a gear oil that will really make a difference here?
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estofer
Samba Member
Joined: November 25, 2004
Posts: 867
Location: Lawrence, Kansas
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| Posted: Sun Mar 16, 2008 8:33 pm Post subject: |
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I have the same problem with my 66. I am just dealing with the grind until I can get a new tranny!
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glutamodo
The Android
Joined: July 13, 2004
Posts: 26311
Location: Douglas, WY
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| Posted: Sun Mar 16, 2008 8:33 pm Post subject: |
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| If the old oil was really heavy/thick stuff then you might see a bit of improvement if you put in synthetic. Synthetic oils lubricate better at lower temps, and generally run a little smoother. But.... just changing gear oil is not going instantly "fix" a bad syncro. Especially one that sounds as bad as this - it grinds even if you try to match engine RPMs with tranny? not good. |
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