Hi!I got a question regarding diff you've swapped in.Did the "new" diff have cooling fins on the bottom of what appears to be rear gear cover (or maybe the housing)?How ABS tone rings worked with Q45 ABS sensors, did you have to do something to fit sensors or it is direct bolt-on?I hope I am getting a 91 NA 4.083 diff (ebay) I cross my fingers Hidden rocks with this swap if any ?Thanks man!

Yes, the Z32 diff has cooling fins at the bottom vs no fin for the Y33's. I liked the fins so I kept the Z32 rear cover.

The ABS rings/sensors are the same. They will fit perfectly. The ABS sensors used silicon beside bolts, so when you remove them try to twist the sensors first to break the silicon before pull them out.

Nothing's wrong with the 4.083 yet. 300-400 miles so far. Gas mileage is about 8-10% worse than before, just as I expected.

Hope you win the diff too!

MPG is worse beause higher operational RPMs, or you just like to drive it good Thanks !

FarFetched wrote:MPG is worse beause higher operational RPMs, or you just like to drive it good Thanks !

Both, I kinda WOTed more than before.