Synchro Help
Thread Starter
Cruising
Joined: Mar 2017
Posts: 12
Likes: 0
Synchro Help
Hello,
I've got an occasional grind on my 2001 coupe 6 speed when shifting from first to second gear only. Sometimes it won't grind at all and it's buttery smooth, sometimes it grinds for just a second but goes into gear, and other times it grinds really bad and won't go into gear. I've been pointed towards the 1-2 synchro being the culprit, but what I'd like to know is what exactly I need to replace. I see inner synchros, outer synchros, and a synchro assembly that doesn't look like either of those. I'm at a loss, as the kits I've seen appear to only have the outer or inner synchros. Any way to know exactly what fails when a synchro goes? Any help would be great or links to the best place to get a rebuild kit that would include all of the possible culprits. Thanks.
I've got an occasional grind on my 2001 coupe 6 speed when shifting from first to second gear only. Sometimes it won't grind at all and it's buttery smooth, sometimes it grinds for just a second but goes into gear, and other times it grinds really bad and won't go into gear. I've been pointed towards the 1-2 synchro being the culprit, but what I'd like to know is what exactly I need to replace. I see inner synchros, outer synchros, and a synchro assembly that doesn't look like either of those. I'm at a loss, as the kits I've seen appear to only have the outer or inner synchros. Any way to know exactly what fails when a synchro goes? Any help would be great or links to the best place to get a rebuild kit that would include all of the possible culprits. Thanks.
Last edited by tw00155; Dec 8, 2017 at 01:16 PM.
Race Director
Joined: Dec 2002
Posts: 10,233
Likes: 21
From: Baltimore suburbs Maryland
Hello,
I've got an occasional grind on my 2001 coupe 6 speed when shifting from first to second gear only. Sometimes it won't grind at all and it's buttery smooth, sometimes it grinds for just a second but goes into gear, and other times it grinds really bad and won't go into gear. I've been pointed towards the 1-2 synchro being the culprit, but what I'd like to know is what exactly I need to replace. I see inner synchros, outer synchros, and a synchro assembly that doesn't look like either of those. I'm at a loss, as the kits I've seen appear to only have the outer or inner synchros. Any way to know exactly what fails when a synchro goes? Any help would be great or links to the best place to get a rebuild kit that would include all of the possible culprits. Thanks.
I've got an occasional grind on my 2001 coupe 6 speed when shifting from first to second gear only. Sometimes it won't grind at all and it's buttery smooth, sometimes it grinds for just a second but goes into gear, and other times it grinds really bad and won't go into gear. I've been pointed towards the 1-2 synchro being the culprit, but what I'd like to know is what exactly I need to replace. I see inner synchros, outer synchros, and a synchro assembly that doesn't look like either of those. I'm at a loss, as the kits I've seen appear to only have the outer or inner synchros. Any way to know exactly what fails when a synchro goes? Any help would be great or links to the best place to get a rebuild kit that would include all of the possible culprits. Thanks.
I got my kit here:
http://www.thegearbox.org/T56_corvette.html
Here's as far as I got the other night, just got to removing the extension housing.
Race Director
Joined: Dec 2002
Posts: 10,233
Likes: 21
From: Baltimore suburbs Maryland
All of the above for the obviously worn ones. This time around I am replacing all of the synchros (to carbon blockers)- in the kit linked. Will replace the outer rings depending on what I find. I didn't replace the bearings, they look OK and likely have much more life. The full bearing kit is significantly more than just the synchro kit.
