Tre Rear Differential Upgrade Service
Gonna update your Blog - how did it go last weekend??
Mine was noticeably louder, but I had Whiteline rear diff bushings put on when the rear diff went back in. The diff was broken in with 2 weeks of daily driving, and I don't even notice any additional noise now...
I can probably swing it for 1.5 way but the 2-way side sheaves will have quite a bit of backlash of the cross shaft and it may cause a lot of slop in the rear diff. I'm going to pull the max-lock out and try it with the 1.5 sheaves but I might go straight to the 2-way being that I kinda know how the 1.5-way works. I honestly think that the max-lock will be best for loose stuff (rally) being that it does lock-up the rear diff something stupid and does make the car unruly in a way that I didn't like.
Seeing how this thread was bumped up and I have some more events under my belt with the TRE rear diff...I LOVE this thing. I actually spun the car on a 1st gear 180 degree pin cone on exit. Straight up foot to the floor, boost came on and I was backwards. Had a big 'ol smile on my face.
Seriously though....totally worth the $$. I'm able to come out of corners harder and earlier now, not to mention faster corners on throttle the car turns, like I need to add steering correction it's turning so much.
Thanks Jon.
Seriously though....totally worth the $$. I'm able to come out of corners harder and earlier now, not to mention faster corners on throttle the car turns, like I need to add steering correction it's turning so much.
Thanks Jon.
Last edited by kekek; May 18, 2008 at 08:41 PM.
Seeing how this thread was bumped up and I have some more events under my belt with the TRE rear diff...I LOVE this thing. I actually spun the car on a 1st gear 180 degree pin cone on exit. Straight up foot to the floor, boost came on and I was backwards. Had a big 'ol smile on my face.
Seriously though....totally worth the $$. I'm able to come out of corners harder and earlier now, not to mention faster corners on throttle the car turns, like I need to add steering correction it's turning so much.
Thanks Jon.
Seriously though....totally worth the $$. I'm able to come out of corners harder and earlier now, not to mention faster corners on throttle the car turns, like I need to add steering correction it's turning so much.
Thanks Jon.

Luckily there wasn't any traffic around me when I spun the car or there would have been trouble.
Yeah the standard upgrade with 12 friction plates is plenty of lock-up to get you into trouble if you're looking for it.
And this is why I state the the new max-lock with 16 clutch plates is overkill for you guys who never make it to the loose stuff (dirt, snow & ice).
The rear diff is a floating cross shaft design; it's torque reactionary and the looser the driving surface the less lock-up you'll get but the max-lock is very reactive to any input and will prove to be too much for those who drive on pavement.
Pavement = standard upgrade or 12 friction plates, 50% more lock-up than stock.
Loose stuff = 16 friction plates, overkill unless you're in the loose stuff.
It's a pain in the ***. You really need to pull both rear axles then remove the driveshaft and drop the diff. You don't HAVE to drop the rear subframe, there is room to get in there. I'd also recommend doing the rear diff bushings while you're in there. If you do the moustache bar bushings then you'll have to drop the subframe.
Thanks. I was planning on doing the diff bushings and the moustache bushings. I knew for those of us who mostly work under jack stands, it wasn't going to be fun. I can smell the gear oil now...
Speaking of which, what do you guys think of the Red Line shockproof? Currently I am using the Mitsu Diaqueen in the rear diff and transfer case.
Speaking of which, what do you guys think of the Red Line shockproof? Currently I am using the Mitsu Diaqueen in the rear diff and transfer case.
Last edited by chmodlf; May 19, 2008 at 05:15 PM.
If you talk to both him and TRE you can find out about where the heavy additive ends up after prolonged use in the x-fer case (where Shep suggests it's used IIRC, still suggesting Diaqueen in the rear). Sure, for a all out race car it's acceptable. Is that what we are talking about here?
Last edited by Zeus; May 20, 2008 at 06:37 AM.



