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ASM Gearbox info

Posted: 14 Sep 2025, 00:06
by t25adict
has anyone got any info on what diff would be in an ASM gearbox, had a look in a few places and none of them show what diff would be in this code box. 

Re: ASM Gearbox info

Posted: 14 Sep 2025, 07:27
by Aidan
Paul,
ASM should be a 4.57 final drive, 32/7 toothed crown and pinion, has the taller 2.25 second gear (hence the S in the code) and an 0.85 fifth gear, so slightly shorter geared in 5th than an AAP, which makes sense as it's a 1.9 WBX box rather than a 2.1 WBX one; they are often decent basis for a rebuild and are late so almost all have the late 4th5th Syncrohub which is slightly less prone to cracking

Re: ASM Gearbox info

Posted: 14 Sep 2025, 19:46
by Aidan
Frell me Paul
you could have said ta, or given my post a like; I know you've been back on the forum since I posted my reply, so why no response ? :(

I honestly don't know why I bother :roll:

Re: ASM Gearbox info

Posted: 14 Sep 2025, 19:50
by R0B
It is bliddy annoying when people don't acknowledge the fact you have helped them.

Re: ASM Gearbox info

Posted: 15 Sep 2025, 10:44
by t25adict
Paul?
Thank you for the information. Sound like it's a box I will keep hold of, I have an aap as well but that kept popping out of 5 so will probably use this one.
Going to be mated to an 1.9 AAZ TD

Re: ASM Gearbox info

Posted: 15 Sep 2025, 15:03
by Aidan
Apologies if I got your name wrong - I thought you were Paul who has/had the white moon window Syncro, I was sure he was t25addict, my memory isn't what it used to be