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    Thread: Need some basic info on trans types

    1. Geriatric Member VDub2625's Avatar
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      10-11-2012 08:08 PM #1
      Ok, call me an idiot (you're an idiot!), but I'm not for sure clear what trans types there are, and what they may be compatible with.

      020=mk1/2/3(ABA) 4 or 5 speed (cable clutch, rod shift)
      02A=Mk3(VR/TDI), Corrado G60, Passat B3+4 all (hydro clutch except with EV cable kit, cable shift) 5 speed
      02J=Mk4 all 5 speed? I'm fuzzy here
      02M=Mk4 6 speed?

      I have heard of others (02Q [R32?], 02C [Passat syncro], 02K [?], anything else?), but I don't think they fit into my plans.

      Basically, I have an ABA Mk3.5 Cabrio, and I'd like to pick the best trans I can. I'm probably leaning towards an 02A as it's the easiest, but people do 02J swaps for what reason? An 02M would probably be a lot of money for not much gain in the 6th speed and fab work.

      But besides what I need the info for, I'd like a rundown of the various types and their info, just for reference if possible thanks!
      A2Resource
      .......

    2. 10-12-2012 12:02 PM #2
      You have the basics, 02M is also a quattro trans.

      2 good references for transmission codes, ratios, and cruising speed

      http://zelek.com/diagram_charts/diagramlist.htm

      http://eurospecsport.com/products/tr...ing-chart.html

      02A and 02J are the same case. 02A transmissions can be a little confusing though, because they came with 2 different size axle cups.

      02A also has a sloppy shifter. Easily fixed by installing shift box and shift tower from an 02J.

      VR6 and 4 cylinder engines have different bolt patterns.

    3. Geriatric Member VDub2625's Avatar
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      10-13-2012 04:39 PM #3
      Interesting. The 100mm and 108mm axle cups you mean on the 02A? I have seen those, the 100mm is like Mk2, and the 108 is kind of star pattern, not a complete circle.

      What are the differences that make an 02J an 02J, then? If I'm junkyarding, does that mean that I can get an 02A out of a Mk3 or an 02J out of a Mk4 and either will bolt into my car (forgetting about the axle cup situation for a moment)?
      A2Resource
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    4. 10-19-2012 04:03 PM #4
      Sorry I missed the follow up question:

      02J has an improved shifter setup. The tower, box and cables are improved to deliver better, sharper shifts. This setup can be swapped into any 02A transmission car, and may only require slight modifications to mount the shifter inside the cabin. Everything else is plug and play.

      Other than that only gear ratios separate the 2.

    5. Geriatric Member VDub2625's Avatar
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      10-20-2012 04:57 PM #5
      Good to know, thanks. I suppose if I find either cheaply (say, at a junkyard or something), it really depends on miles, how it looks, etc. Thanks for the help! I can't wait to get this swap completed. I love upgrading things that don't really need upgrading, just becuase it's a better design than the 020
      A2Resource
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    6. Geriatric Member VDub2625's Avatar
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      03-17-2013 06:23 PM #6
      Bump this back up because I've learned a few things:

      020 Family
      020- we all know it well
      02K- Mk4 version of 020, for use on 1.4-1.6l engines in Europe

      02A Family
      02A- again, we know it well
      02J- Mk4 version of 02A
      0A4- Mk5+ version of 02A/J, without speedometer sensor hole, otherwise the same (?)
      02T- Mk4 trans, don't know much else (euro only?)
      02S- Mk5+, TDI, 6 speed, also without speedo hole

      02M Family
      02M- Mk4 6 speed
      02Q- Mk5+ 6 speed, update of 02M?
      0A8- Euro Polo, etc? might be an 02M update for that platform?

      other
      0AF- Mk5+, looks kinda like the 02A family, seems it's for smaller engines in Europe?
      0AG- Mk5+, 6 speed, not much more info I could find
      02E- another Mk5+ 6 speed, don't know anythign wlse about it

      Halp?
      Last edited by VDub2625; 03-25-2013 at 07:18 PM.
      A2Resource
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    7. Member Broke's Avatar
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      03-18-2013 07:05 AM #7
      Quote Originally Posted by VDub2625 View Post
      Bump this back up because I've learned a few things:

      020 Family
      020- we all know it well
      02K- Mk4 version of 020, for use on 1.4-1.6l engines in Europe
      The 02K is a hydraulic clutch version of the 020.
      Internally it is pretty much the same (with some updated shift parts if I recall correctly, like an 02A/J some use 3-piece sync rings) as the 020 trans, but the 5th housing is different.
      The bellhousing also has more mounting holes for the other engine block sizes.

      The clutch release arm is pushed DOWN to operate the pushrod, in the 020 the clutch release arm is pulled UP by the cable.
      They just put the release arm shaft UNDER the actuation finger so that a hydraulic slave cylinder could push down on the release arm and swing the actuation finger into the trans to shove the TO bearing and pushrod out.

      ClubGTI had a thread with 02K pics and comparisons to the 020 http://www.clubgti.com/showthread.ph...06-02K-gearbox
      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

    8. 03-18-2013 11:24 AM #8
      Quote Originally Posted by VDub2625 View Post
      Interesting. The 100mm and 108mm axle cups you mean on the 02A? I have seen those, the 100mm is like Mk2, and the 108 is kind of star pattern, not a complete circle.
      One more clarification:
      020: 90mm or ...?
      02A: 90mm or 100mm axle flanges
      02J: 100mm or 108mm axle flanges

    9. Geriatric Member VDub2625's Avatar
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      03-18-2013 04:39 PM #9
      Quote Originally Posted by rstolz View Post
      One more clarification:
      020: 90mm or ...?
      020 came with 90mm and 100mm flanges. I'm not sure about Mk1, but in the Mk2 it was on all 16v, and most 88+ 8v gas (there's a real sketchy period in 87-88 where everything changed a dozen times, but after that it's all 100mm). Diesel always kept 90mm until the end of Mk2s. I think even the early Mk3 TD had 90?

      Quote Originally Posted by Broke View Post
      The 02K is a hydraulic clutch version of the 020.
      Really good info, thanks! I didn't know that. I'll check that link soon. The page doesn't wanna load right now

      I'd love to have gotten an 02K, just for the hell of it. I'm now really interested in this 02S business, for my Cabrio, though.
      A2Resource
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