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View Full Version : O2A Tranny coding and gearing help...


lotar_6
11-01-2006, 10:41 AM
Ok, so I'm bent on putting a lsd in my car and doing synchros. My wife would prefer that I spend the money on a built tranny so I don't dissapear into the garage for the winter. So I've been shopping and have a bunch of questions that I hope some of y'all can help with. (Also, sorry to Jay for hi-jacking his thread!)

Here's what's up so far... I found an ebay auction for a built G60 tranny w/ a quiafe and cryo coated gears. Also, Brent pointed out a built G60 tranny w/ peloquin and VR gearing. I got the gearing for both and I'm not sure what I really want...

Ebay tranny:
This is a 1991 G60 Trans Either an ATA or AYL code I am unsure. Ratios are: ATA 3.78 2.11 1.35 .97 .80 Final 3.68 AYL 3.78 2.12 1.43 1.03 .84 Final 3.68

The O2A listed on the tex (as presented by Brent above) is touted as a G60 tranny w/ VR6 gearing and shows the following:
Input Ratio: 3.38 Final Drive Ratio 3.38
Gear - Input - Output
1 - 3.3 - 3.30
2 - 1.94 - 1.94
3 - 1.34 - 1.34
4 - 0.97 - 0.97
5 - 0.795 - 0.80


So... is the second tranny really built to the VR spec? It seems like such a drastic difference. How would the first feel compared to what I currently have? Is the second really a VR set-up?

Also, can somebody explain what I should be looking for in ratios? Like, is lower final gonna give me a higher top speed and lower RPM's in highway cruising? I just want to know what I'm getting myself into for this kinda money!! TIA!

I thought VR Corrado's had a CCM trany code, but this thread (http://forums.vwvortex.com/zerothread?id=2905638) says I should have a CDM w/ a 3.647 final. Also, CCM's & CHM's are in Passats & Golf/Jetta III and had a 3.389 final.

This other thread (http://forums.vwvortex.com/zerothread?id=2899565) people mention doing a 3.94 w/ a tall 5th. gets through gears very quick and has good hi-way mpg. But, it's also recommended no to do this w/ a boosted car, b/c you can't shift fast enough.

I plan on boosting w/ a SC sometime down the road (it's a long road). So... will the 3.3 be too low and slow me down on the autocross track until I get a SC?? Also, the ebay tranny is done on a G60 spec and has a final of 3.68. How is this diff. from the SLC tranny (assuming CDM w/ 3.647)??


I think I want the 3.6 not the 3.3 final... but I'm still not sure! Somebody please give opinions!!

USOPHUNKE
11-01-2006, 10:41 PM
Boostedcorrados on vortex has what you want..... its all done...vr cryo gears lsd..

just a look out 4 ya

USOPHUNKE
11-01-2006, 10:46 PM
you want taller gears for boosted cars.....right..

if the gear ratio is too short you wont have much time in full boost... and will be shifting way too quick

the vr gear should be way diff due to where it gets its power and its redline compared to the g60 gearing...

I am running the 16v passat gears which is kinda in the middle of the two...

thats as much as i know...or think I know haha