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Engine Specific Info and Questions => TDI Engine -General Info => Topic started by: w1004thw on March 13, 2026, 12:34:57 pm

Title: gear ratios
Post by: w1004thw on March 13, 2026, 12:34:57 pm

Does anyone have the gear ratios for these? I'mm trying to decide which would be a better fuel economy choice for an ALH tdi conversion to Tdi-M.
02a/j on 2001 ALH tdi
020 on 1998 ABA

Title: Re: gear ratios
Post by: ORCoaster on March 13, 2026, 01:59:03 pm

This should give you enough information to ponder about.

http://www.scirocco.org/gears/

Just ID your transmission and the year and you should find the different ratios you desire.

Edit::::  Maybe not as these are mostly older transmissions and I just noticed you are more MODERN.

Title: Re: gear ratios
Post by: fatmobile on May 31, 2026, 09:30:32 pm

Do you know the rest of the code?
There are many different codes for the 020.
 An ABA might have an ACN with maybe a 3.67 ring and pinion that is good for the highway.
Some 02As are better than the 02Js, when it comes to lower RPM on the highway.