eco diesel trans help

[ecodiesel91]

i need some help. i have a 1991 eco diesel jetta. i need a new trans for the car. i have a service manual for car and it says that the eco diesel trans code is 020 avx. it also says that none of the other models use the same trans. i am having a hard time finding one close to me. i was also wondering if there was another trans type that would work but with different gear ratios.

[Glegor]

i need some help. i have a 1991 eco diesel jetta. i need a new trans for the car. i have a service manual for car and it says that the eco diesel trans code is 020 avx. it also says that none of the other models use the same trans. i am having a hard time finding one close to me. i was also wondering if there was another trans type that would work but with different gear ratios.

since the AVX was the WORST trans you could get from VW, you have nowhere to go besides up from here..

i would look for an ACN, AON, ASF, ACL code trannies.. they do not have the same SUPER LOW final drive as yours..

basically any trans will net you better MPG than what you have now.. the AVX was only used in early 90s ECOdiesels.. making it hard to find.

[ecodiesel91]

So basicly all those trans will bolt up to my car it just the gear ratios that are different? And out of those trans numbers you listed is there a specific one I should look for first?

[Baron VonZeppelin]

Here is a list of all the 020 trannys.
http://www.xjamiex.com/mk2resource/eandt/ratios.html

The AWY and AVX are the ones you DONT want to get.
Nor anything similar to them.

Since you have an ECO with 8mm Injection Pump and no LDA fuel enrichment on boost -
I'd go more along the lines of AOP or ACH style ratios.

If you have - or are planning - on upgrading to a 9mm Tbo Dzl Inj Pump -
then i'd go more for the ACN or ASF type ratios.

Multiply the ring/pinion ratio by the 5th gear number, and thats your final drive ratio.

Would also stay with a Mk2 product/code in your search.
You can get into some rear mount location issues with about all of the Mk1 trannys.
Can't remember for sure - but maybe some of the 84's had Mk2 provisions.
But all the Mk2's are same and bolt right in to your 91.

[turboniumGTD]

Not all 020 transmissions will bolt right up. Your AVX came with 90 mm output flanges for your axles. Some other transmissions came with 100 mm flanges. You can swap the flanges:

http://brokevw.com/flanges.html

Check out this site for more info:

http://brokevw.com/

[8v-of-fury]

Honestly that ECO trans only cruises 400rpm higher than the tallest geared transmission you can get..

Is it really worth the work? Being that it is a less powerful motor, the lower gear ratio will help it with acceleration from a stop and at speed.

A tall tranny is nothing to write home about, unless you got more than stock torque.. they suck to drive.

[Baron VonZeppelin]

The 90-100 flanges totlally slipped my mind.
But that A2 site lists all the flange sizes too.

I've driven a 90 NA with AWY, and a 91 ECO with AVX
- they both sukked compared to what i'm used to on the highway. (seat of the pants)
The AWY car was totally miserable - they are The Worst.
I think the turbo on the ECO combines to make it feel way too buzzed at 70-75 mph.

These were designed around US Mandate 55mph days gone by.
Passed on both cars mainly due to hassle of swapping tranny.
Turn-key cars otherwise.
I'm about 85-90% highway driving.
300-400-500 RPM's above prime makes a bad dent in MPG and ride quality.

My NA's both have AOP - they work great.
My TD's both have ACH - wouldn't mind a little longer leg in them eventaully, they could absorb it.

ecodiesel91 says he needs another tranny - so he's into it already.

ACN/ACL = 2.75:1
AOP/ACH = 2.95:1
AVX = 3.19:1
AWY = 3.51:1

RPM / Speed Calculator =
http://www.scirocco.org/gears/

[srgtlord]

I have an AWY transmission, and it is very useful for city/ intown driving, and OK for highway. Ive had it up to 85 mph but it gets abit noisy inside If you cannot source another transmission slap in the transmission you have with new seals, and call it a day. I have been able to acheive 40 intown/city driving and about 45-47 on the highway depending on how hard im pushing it.

[8v-of-fury]

ecodiesel91 says he needs another tranny - so he's into it already.

RPM / Speed Calculator =
http://www.scirocco.org/gears/

Touche' my good sir.

Well I would almost say that an ACN is too closed geared for my liking. Definitely what I would call a close ratio box.. I can be comfortably in 5th gear by 55km/h if I wanted too. Without lugging the engine. But maybe some people want a close box? Its an ok tranny for the M-tdi.

[Baron VonZeppelin]

I have an AWY transmission ... about 45-47 on the highway depending on how hard im pushing it.

I really feel like someone probably changed the 5th gear set in your AWY tranny.
Thats where their main problem is (.89 versus .75 or .71)

The 90 with AWY i drove would have exploded before it hit 85mph... i think.
You'd be right at the redline, 4300 or so.
It felt real buzzy and fuzzy just at 70.

[ecodiesel91]

i appreciate all the info and help. 5th gear started making funny noises on highway. after got home( less than mile for start of noise) it drove fine in first 4 gears. tryed to drive around town next day and felt like there was something floating around trans. never drove it since. can't wait to get it on road again

[Prairie]

You can not run these trans. even remotely low on gear lube. 5th gear goes out just like what you are describing. How the hell does one "feel" something floating around the transmission? You mean, like a hoola-hoop?
The Mk. II trans.'s actually do not sit flat in the car. They actually tilt slightly toward the driver's side and that is where the add-hole is located.
You need to purchase a Bentley and have the discipline to read and learn about this stuff. It is all very valuable info.

If you live at low altitude and don't have steep hills, a gasoline trans (mentioned above) might work good for you because your K-14 does give the engine some "life."

If you live higher up and do hills....go with an ACH or AGS or the other one which Baron von discussed above.

DO NOT run a damned AUG like one of the guys above does....unless you put a 0.75 fifth gear into it.

[ecodiesel91]

when i move the car slowly is sounds like there is pieces of metal getting stuck in gears. that is how the hell i can feel there is metal pieces in the trans

[ecodiesel91]

The Mk. II trans.'s actually do not sit flat in the car. They actually tilt slightly toward the driver's side and that is where the add-hole is located.
You need to purchase a Bentley and have the discipline to read and learn about this stuff. It is all very valuable info.

if you would have read above you would have noticed i do have service manual. i also have the "discipline" to read it. i came here to get some help and what transmitions would bolt on to my car. you think i dont know about tranny oil? it was not low on oil.

[mace0525]

Hello
Where are you in the USA ??? I am in Rutherford NJ 07070
Contact me 201 394 4652
Audi/VW pro:
Mace

[ecodiesel91]

i live in IL near chicago

[Glegor]

You can not run these trans. even remotely low on gear lube. 5th gear goes out just like what you are describing. How the hell does one "feel" something floating around the transmission? You mean, like a hoola-hoop?
The Mk. II trans.'s actually do not sit flat in the car. They actually tilt slightly toward the driver's side and that is where the add-hole is located.
You need to purchase a Bentley and have the discipline to read and learn about this stuff. It is all very valuable info.

If you live at low altitude and don't have steep hills, a gasoline trans (mentioned above) might work good for you because your K-14 does give the engine some "life."

If you live higher up and do hills....go with an ACH or AGS or the other one which Baron von discussed above.

DO NOT run a damned AUG like one of the guys above does....unless you put a 0.75 fifth gear into it.

hey man, im making due with what i have. im a broke skool kid damn it..

i NEVER suggest that anyone actually run an AUG trans, but i did, and it works JUST FINE. i still get almost 50mpg.. its actually really fun to drive with the close ratio box in the car.

no, i never suggested to him to install one, or anyone for that matter.. does it bother you that i had nothing besides an AUG in my shop at the time of the engine swap? would you rather i waited to do my swap until i could find a PROPER diesel tranny?

what the hell does it matter what trans i have in my car anyways? its my car, ill run whatever trans in it that i please.. the aug is suprisingly fun around town. i can tell you have never driven a hopped up diesel with an AUG trans.. otherwise you would have never made the comment you did..

besides, my diesel gets AMAZING mileage already, who cares if my trans is a bit low geared? its better than the GC trans that ALL DIESEL RABBITS came with, at the first part of their lives..

[bobbycollins]

http://www.a2resource.com/eandt/transmissions.html

[meanvw]

i live in IL near chicago

I know where there is an Ecodiesel sitting in a you pull yard north of Milwaukee. Pm if you want details. Trans was still in it last fall. Have not been out to that yard yet this year

[QuantumSyncro]

If you're still looking I have an AVX, AWY and an ACH trans for sale.

[bobbycollins]

If you're still looking I have an AVX, AWY and an ACH trans for sale.

Do you still have the ACH for sale?

Sent from my SCH-I535 using Tapatalk 2

[Glegor]

You can not run these trans. even remotely low on gear lube. 5th gear goes out just like what you are describing. How the hell does one "feel" something floating around the transmission? You mean, like a hoola-hoop?
The Mk. II trans.'s actually do not sit flat in the car. They actually tilt slightly toward the driver's side and that is where the add-hole is located.
You need to purchase a Bentley and have the discipline to read and learn about this stuff. It is all very valuable info.

If you live at low altitude and don't have steep hills, a gasoline trans (mentioned above) might work good for you because your K-14 does give the engine some "life."

If you live higher up and do hills....go with an ACH or AGS or the other one which Baron von discussed above.

DO NOT run a damned AUG like one of the guys above does....unless you put a 0.75 fifth gear into it.

my AUG was an emergency trans.. i needed to get to work monday.