Results 1 to 13 of 13

Synchros?

This is a discussion on Synchros? within the Manual Transmission forums, part of the Drivetrain category; Ok, so my clutch finally went out last year and I decided to wait till spring to get her fixed ...

  1. #1
    nothing to prove LOCKDOWN's Avatar
    Join Date
    Mar 2006
    Location
    Ohio - West of Cleveland
    Age
    33
    Posts
    131

    Light Metallic Pewter
    1999 Camaro Z28

    Synchros?

    Ok, so my clutch finally went out last year and I decided to wait till spring to get her fixed (since I was going to store it during the winter anyway). The master cylinder is what actually went out. I took the time to scout out a shop that I felt would do a good job. I found a shop called (extreme performance in North Olmstead, OH) I had the car fixed there and a whole new clutch put in since they said that the pressure plate was getting pretty burnt up. I had a "Zoom" clutch put in (the one made of kevlar) to the tune of $1700. Anyway I got it back and now it slips out of second gear. This is so utterly annoying that it makes me not want to drive my most valuable posession any more I took it back and they said that it was the synchros and that they couldn't possibly have done that. I don't know that much about it, but I've been told the synchros go out when the car has been driven hard. I need advice on what to do PLEEEEASE!!

  2. #2
    Moderator Cutlass's Avatar
    Join Date
    Apr 2008
    Location
    Madison, WI
    Posts
    6,998

    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    do you have a stock shifter or aftermarket?
    It could be a syncro or a bent shift fork. If they drove it hard and really yanked it down into second HARD, they could bend the Aluminum shift fork.

  3. #3
    nothing to prove LOCKDOWN's Avatar
    Join Date
    Mar 2006
    Location
    Ohio - West of Cleveland
    Age
    33
    Posts
    131

    Light Metallic Pewter
    1999 Camaro Z28

    If they bent the shift fork would I have to have the tranny pulled? I would have to have the tranny pulled to replace the synchros right?

  4. #4
    Moderator Cutlass's Avatar
    Join Date
    Apr 2008
    Location
    Madison, WI
    Posts
    6,998

    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    yes to both q's

  5. #5
    Junior Member Octavain's Avatar
    Join Date
    Aug 2008
    Location
    NW, Arkansas
    Posts
    77

    White
    1998 Camaro

    Could you explain what the heck a synhros are and the aluminum shift forks???
    -Aaron
    Mods: SLP Flowpac Cold Air Induction Package, 160 Thermo, TB bypass, SLP (Clutch, Pressure Plate, Flywhell), Skip Shift Elminator, UMI (SFC, Tower Brace, LCA, Torque Arm, Panhand Bar), no cats, Moser 9" w/ 3.89 gears, 5.0 short throw, Strano Springs, Koni single adj, '94 OEM ZR-1 wheels

  6. #6
    Veteran Hi-Po's Avatar
    Join Date
    Nov 2005
    Location
    Florida
    Posts
    10,461

    Black
    1999 TA WS.6

    Quote Originally Posted by Cutlass View Post
    do you have a stock shifter or aftermarket?
    It could be a syncro or a bent shift fork. If they drove it hard and really yanked it down into second HARD, they could bend the Aluminum shift fork.
    I thought the 1-2 fork was steel, and it was the 3-4 fork that was the problem causing aluminum?

  7. #7
    Moderator Cutlass's Avatar
    Join Date
    Apr 2008
    Location
    Madison, WI
    Posts
    6,998

    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    I'm not completely sure, but I think all the T56 shift forks are aluminum but the 1-2 is a little beefier and usually doesn't cause a problem.

  8. #8
    Veteran Hi-Po's Avatar
    Join Date
    Nov 2005
    Location
    Florida
    Posts
    10,461

    Black
    1999 TA WS.6

    Quote Originally Posted by Cutlass View Post
    I'm not completely sure, but I think all the T56 shift forks are aluminum but the 1-2 is a little beefier and usually doesn't cause a problem.
    That always made sense to me. But what you said have always made the most logical sense. But Ive always heard different.

    Anyone with a for sure answer here?

  9. #9
    Moderator 35th-ANV-SS's Avatar
    Join Date
    Oct 2008
    Location
    Wherever life takes me
    Posts
    12,465

    Red
    02 35th LE Camaro SS

    HiPo, you are correct. 1-2 shift forks are steel. 3-4 are aluminum, which is why these are more prone to bending.
    It's on jackstands.

  10. #10
    Moderator Cutlass's Avatar
    Join Date
    Apr 2008
    Location
    Madison, WI
    Posts
    6,998

    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    35th-ANV-SS, are you sure?
    EPP's website says:
    "1-2 shift fork - There is no replacement for the 1-2 shift fork. It is aluminum and is fairly strong by design."

  11. #11
    Moderator 35th-ANV-SS's Avatar
    Join Date
    Oct 2008
    Location
    Wherever life takes me
    Posts
    12,465

    Red
    02 35th LE Camaro SS

    Cutlass, no! Haha. I thought I had read what I posted in the T56 service manual, but now that I think about it, it was from a thread in either here or LS1tech. My statement was incorrect. You are correct. 1-2 shift forks and 3-4 shift forks are all aluminum.

    http://www.transmissiondigest.com/te...tds%20HTML.htm

  12. #12
    Veteran Hi-Po's Avatar
    Join Date
    Nov 2005
    Location
    Florida
    Posts
    10,461

    Black
    1999 TA WS.6

    Quote Originally Posted by Cutlass View Post
    35th-ANV-SS, are you sure?
    EPP's website says:
    "1-2 shift fork - There is no replacement for the 1-2 shift fork. It is aluminum and is fairly strong by design."
    Ok, so you are saying here, most do not have issues with the 1-2 fork correct? My T56 was rebuilt with a STEEL 3-4 fork and viper shafts. Thats the only reason im questioning it. I cant remember which of the two were the problems childs.

    So, judging by EPP's site, the 1-2 fork is aluminum, and a decently strong piece. The 3-4 fork, is a weak link and is the fork that gets replaced during a T56 upgrade.

    Right?

  13. #13
    Moderator 35th-ANV-SS's Avatar
    Join Date
    Oct 2008
    Location
    Wherever life takes me
    Posts
    12,465

    Red
    02 35th LE Camaro SS

    That sounds right to me R. I remember reading that, and that is why I had thought what I did originally. From what I remember and have seen as T56 upgrade parts...3-4 forks are always swapped with steel ones, among other things.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Question: transmission synchros
    By SMWS6TA in forum Manual Transmission
    Replies: 12
    Last Post: 08-17-2010, 03:00 PM
  2. Synchros or Hydraulics?
    By 01ws6er in forum Manual Transmission
    Replies: 4
    Last Post: 06-22-2010, 04:03 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •