Need some basic info on trans types

[VDub2625]

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!

[rstolz]

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.

[VDub2625]

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)?

[rstolz]

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.

[VDub2625]

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

[VDub2625]

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?

[Broke]

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

[rstolz]

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

[VDub2625]

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?

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.