Anyone have any info about G64.42 993 twin turbo AWD version for Taiwan only? I have a '96 Taiwan model 993tt and believe this is the transmission in my car. I would like to know what is the difference between G64.42 and G64.51.

JW
'96 993tt 3.8 Zero Clearance
'86 930
'92 968 race
'89 944 turbo race

 

Check out this link:
http://www.porotto.com/deutsch/G50.html

However, there are no information on "G64.42".

 

This is a mysterious gearbox. While Porsche lists it as a Taiwan market gearbox, there is absolutely no reference made to it anywhere in the parts database.

 

A 10 year old thread, but I came across it and wanted to point out that the G64.42 designation in PET is a mistake and the right code is G64.52. This type of gearbox was only offered for 1998 model year 993 Turbo for Taiwanese market. While the regular G64.51 has a 31:9 ring and pinion, the rare 1998 Taiwanese version has 32:11 which means it might get smaller emission values in a test as it is running at lower rpm, but the acceleration must also suffer here.