5 speed swap....

[Audi180]

Hi..I have swapped my A/T S14 to M/T...In 5'th gear on 2K RPM i have vibration who appear to come from the diff..someone told me it could be because of the gear ratios of the a/t diff...should i replace the entire diff or can i do an internal change in it?

thanks,Tom

[Hijacker]

the diffs were the same between the A/T units and the M/T units.

More than likely the bushings that support the front of the diff are going bad and causing that vibration. I'd check those for cracks and consider either replacing them, or buying a set of spacers.