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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: 26323 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. _________________ 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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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 _________________ 2/1600 buggy Kreger chassis 4 baja 1000
71 911 track car
65 kombi EZ camper
69 class 11 racecar
70 class 11 prerunner |
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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: 1901
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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. _________________ 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: 17290 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. _________________
overheard at the portland Swap Meet... wrote: |
..... a steering wheel made from a mastadon tusk..... |
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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? _________________ 1967 Beetle, 1971 Bay Window Westy, 1972 Super Beetle, 1970 Drag Beetle, 1976 Porsche 912E
www.thegoodvolks.com
www.us131msp.com |
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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! _________________ 1964 Type 1 Vert "Ruby"
2019 Tiguan
2020 Tiguan |
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glutamodo The Android
Joined: July 13, 2004 Posts: 26323 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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