Synchros gone?
Thread Starter
Pro
Joined: Feb 2010
Posts: 618
Likes: 4
From: Lexington SC
Synchros gone?
Was headed to the tuner today to get a street tune so I can break in my new motor and then all of a sudden. Bam!
2 and 4 are a no go. Push the clutch in shift to second and grinding gears is what is heard and the same for 4th. It goes into 1-3-5-6 just as easy as can be. So I turned around and headed home and got it to go into 4th one time but that was it.
So are my synchros bad?
2 and 4 are a no go. Push the clutch in shift to second and grinding gears is what is heard and the same for 4th. It goes into 1-3-5-6 just as easy as can be. So I turned around and headed home and got it to go into 4th one time but that was it.
So are my synchros bad?
Burning Brakes
Joined: Jul 2009
Posts: 976
Likes: 53
From: smyrna de
a few things can cause grinding other than just failed/worn syncros. the t56 has a ton of small parts. first thing i would do is make sure the shifter is aligned. use the netrual lock pin and make sure its perfect, then go from there..
Supporting Vendor
Joined: Apr 2011
Posts: 3,332
Likes: 194
From: Frederick Maryland
St. Jude Donor '08-'09-'10-'11-'12, '14-'15-'16-'17-'18
__________________
Thread Starter
Pro
Joined: Feb 2010
Posts: 618
Likes: 4
From: Lexington SC
Melting Slicks
Joined: Jan 2007
Posts: 3,021
Likes: 133
From: Conejo Valley CA
That's what I'm thinking. Can you pre-shift and then get into 2nd or 4th okay? For example, first go into third and then is going into second okay? My trans went out and I had to do this trick to get into 1st and 2nd gears (those were my grinding gears).
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Burning Brakes
Joined: Jun 2012
Posts: 1,240
Likes: 1
From: Orange County California
I had a similar problem but with gears 1 and 3 a few weeks ago...half the folks came on saying my trany was done...some cooler heads said to check the linkage and look at adjusting the shifter
a few days before I had the shifter out and when I put it back in I put it about two milimeters further backward than it should be, it did'nt become a problem until I drove the car hard a few days later and got everything up to high operating temperatures....when the arts all expanded from the heat that two milimeters off was enough to make the car not seat into those forward gears properly....simply adjust the shift box a few millimeters fixed the problem instead of $2000 on a new tranny
I'm not trans expert, but the thing that convinced me to look for something other than destroyed synchros was the persistant thought that it seemed unlikely that two synchros on the same side of the shift box would both go bad at once with none of the common warning signs like gear grinding or odd noises
a few days before I had the shifter out and when I put it back in I put it about two milimeters further backward than it should be, it did'nt become a problem until I drove the car hard a few days later and got everything up to high operating temperatures....when the arts all expanded from the heat that two milimeters off was enough to make the car not seat into those forward gears properly....simply adjust the shift box a few millimeters fixed the problem instead of $2000 on a new tranny
I'm not trans expert, but the thing that convinced me to look for something other than destroyed synchros was the persistant thought that it seemed unlikely that two synchros on the same side of the shift box would both go bad at once with none of the common warning signs like gear grinding or odd noises
Thread Starter
Pro
Joined: Feb 2010
Posts: 618
Likes: 4
From: Lexington SC
Will have more information tomorrow but I am not quite reading if there is a unique position that it should be placed it. But I am sure I will be able to tell tomorrow once we open the console up