I've gotten my gearbox codes finally all decoded and sorted. Got rid of the stock box from the turbo 1.8 in the GTi, and the TT 6-speed box, with its rear output, and much heavier weight.
I've secured a second 5 speed Golf/Jetta box with the code I wanted. And gotten rid of one that had gear ratios I just couldn't use.
I now have two boxes that are both 02J with the "EGT" code. This gives me the following gear ratios;
1: 3.778, 2: 2.118, 3: 1.36, 4: 1.029, 5: 0.837. Final: 4.235
Using the following calculation site; http://www.blocklayer.com/rpm-geareng.aspx , I found my shift points will be approximately;
29 mph, 52 mph, 81 mph, 107 mph, and 131 mph.
If I change out 4th and 5th from an "EUQ" code box, I can change the shifts to 100 and 124 respectively.
My question would be in regards to Rally Sprints; would the stock numbers be fine, or should I change out 4th and 5th when I have the box apart to install the lsd?
It feels like the 7 mph difference in both high gears really wouldn't matter much. What would make a difference I feel, would be switching just the 3rd gear set, and changing that shift point from 81 down to 75. Nut then again, I feel like allowing the car to stretch the extra 6 mph in 3rd makes sense, with the speed numbers I have seen posted in stage reports.
All numbers were set using a 6,000 shift point to keep the turbo spooling, and a 7,000 rev limiter in place to protect the motor.
After some more playing with the numbers, if I set the shift point and shift light at 6,400; I can get shift points at:
30, 55, 85, and 114. That seems like pretty good speeds for both RallyCross and RallySprints.