Mark A. Rogalski

iTrader: (1)

I'm looking at buying a low mileage rearend (850 miles) witht the Zexel Torsen unit in it.

If I wanted to replace that unit with an Auburn or Zexel T2R would a shop have to mess with the ring and pinion setup (lash)?

Concerned that messing with that might cause problems if not set up right.

8a8mfh

iTrader: (3)

Yes they need to check and maybe reset the backlash after they put your ring gear on the new differential carrier. IMO backlash is the easiest thing to set so it shouldn't be a problem.

chicane

Throw some paint (oil based artist type) on the ring gear and wipe a pattern first. Also check the las in about three places.

Re-install the carrier to the lash setting first and make sure the wiped pattern looks the same or close to it. Then make any adjustments from there to get the pattern to where it was when you pulled it out.

I concur.... this is the easiest swap done.

Mark A. Rogalski

iTrader: (1)

Thanks.

One more thing. If I decide to go with a 3.73 is there much more involved then the above? To swap out the 3.42 to a 3.73.

Keep in mind I do not have the time, equipment, or experince to do this myself. I will have to find a competent shop in the Phoenix area.

chicane

There is a lot more involved in doing a ratio change. If you havent done them in the past.... do take it to a performance builder.

keliente

iTrader: (22)

Yes, because the pinion & bearings need to come out as well, and normally it takes longer to set the correct pattern with an entirely ring & pinion than just a new carrier.