Username or Email Address
Do you already have an account?
Forgot your password?
  • Log in or Sign up

    VWVortex


    Results 1 to 3 of 3

    Thread: Mk1 Rabbit Diesel 5 Speed Swap Question

    1. Member ddd8896's Avatar
      Join Date
      Jan 9th, 2012
      Posts
      498
      Vehicles
      2003 Jetta Wagon TDI, 1997 Cabrio, 2011 Golf TDI, 1981 Caddy 1.6D, 1984 Jetta Coupe TD
      08-28-2012 06:11 PM #1
      Currently, I have a 4 speed Trans Code "GL 13081". . . Its a dog. Id love to do a 5 speed swap within the next year and Ive been searching the forum for info about the swap. From what I can tell, the 020 FN,FH,FJ is a good trans to look for since I have the diesel. I found this link with the trans ratios and it raised a few questions for me.

      It looks like my GL trans is:

      1st - 3.45
      2nd - 1.75
      3rd - 1.06
      4th - 0.70

      with a final drive of 3.89

      The FN,FH,FJ Trans is :

      1st - 3.45
      2nd - 1.94
      3rd - 1.29
      4th - 0.91
      5th - 0.71

      with a final drive of 3.89

      -Will I run lower rpms on the highway? Im no expert but it looks to me like the rpms in the final gear of 4 speed and 5 speed is almost exactly the same.

      Any other suggestions or advise is appreciated. Thanks !
      Services: Contact me for a good price on Timing Belt installs including diesels, DSG Service, 2.0T De-Carb (Walnut Blasting), etc.
      Location : Charlotte, NC
      MK6 Golf R LED Tails - http://tinyurl.com/qyhm8b5

    2. Member Broke's Avatar
      Join Date
      Aug 13th, 2001
      Location
      Columbus, Ohio
      Posts
      15,064
      Vehicles
      86 GTI 2.0L, 88 Scirocco 16V, 2010 F150 STX
      08-29-2012 08:58 PM #2
      Quote Originally Posted by ddd8896 View Post
      Currently, I have a 4 speed Trans Code "GL 13081". . . Its a dog. Id love to do a 5 speed swap within the next year and Ive been searching the forum for info about the swap. From what I can tell, the 020 FN,FH,FJ is a good trans to look for since I have the diesel. I found this link with the trans ratios and it raised a few questions for me.

      It looks like my GL trans is:

      1st - 3.45
      2nd - 1.75
      3rd - 1.06
      4th - 0.70

      with a final drive of 3.89

      The FN,FH,FJ Trans is :

      1st - 3.45
      2nd - 1.94
      3rd - 1.29
      4th - 0.91
      5th - 0.71

      with a final drive of 3.89

      -Will I run lower rpms on the highway? Im no expert but it looks to me like the rpms in the final gear of 4 speed and 5 speed is almost exactly the same.

      Any other suggestions or advise is appreciated. Thanks !
      You are correct, the 5 speed will NOT lower the freeway RPM compared to the trans you have now as the ratios are nearly the same. What the 5 speed does is to squeeze another gear into the mix between the shortest (1st 3.45) and the tallest (5th 0.71), it doesn't drop your overall final ratio (gear ratio x R&P ratio)

      A 5 speed might help it feel more peppy by allowing the engine to stay in a tighter RPM range between shifts. The jump between each gear is smaller with the 5 speed (5 steps between 3.45 and 0.71 versus 4 larger steps between the same end points of 3.45 and 0.71/0.70) so the engine RPM won't drop as much between each gear, and it won't have to work quite as hard pulling from gear to gear.
      020 trans info pages - www.BrokeVW.com
      NEW 0.7619 5th gears for the 020
      NEW 020 reverse gears
      '86 GTI 8V 2.0L -'88 Scirocco 16V - '10 F150 4x4

    3. Member ddd8896's Avatar
      Join Date
      Jan 9th, 2012
      Posts
      498
      Vehicles
      2003 Jetta Wagon TDI, 1997 Cabrio, 2011 Golf TDI, 1981 Caddy 1.6D, 1984 Jetta Coupe TD
      08-29-2012 09:15 PM #3
      Ok makes sense. I appreciate your feedback. Also, I love your website !
      Services: Contact me for a good price on Timing Belt installs including diesels, DSG Service, 2.0T De-Carb (Walnut Blasting), etc.
      Location : Charlotte, NC
      MK6 Golf R LED Tails - http://tinyurl.com/qyhm8b5

    Posting Permissions

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