Truck gurus -- LSD for the Durango?

steve remchak · **Posted:** Sat Aug 13, 2011 10:29 am

MikeWhitney wrote:

steve remchak wrote:

not that this is helpful, but...... Suburban K2500. :roll:

Btdt, no thanks

Greetings from oak island

enjoy

MikeWhitney · **Joined:** Wed Aug 20, 2003 9:15 pm **Posts:** 4724

Update:

3.90 gears = awesome. Reduces the shifting when pulling a big box on the highway.

Yukon Duragrip = not so much. Works spectacularly, but OMFG is this a noisy chattering POS.

http://www.youtube.com/watch?v=CmmF9qe4 ... e=youtu.be

Fortunately Chase at ECGS is being very helpful in helping work this out. They are going to pull it and put in an Eaton Truetrac (Torsen) diff instead.

Richard Casto · **Posted:** Fri Aug 03, 2012 9:16 am

Interesting video. Something clearly is not right with that differential.

Richard

Vincent Keene · **Posted:** Fri Aug 03, 2012 9:27 am

MikeWhitney wrote:

http://www.youtube.com/watch?v=CmmF9qe4G9E&feature=youtu.be

Holy crap! And it's been like that since day one? WTF?

JamesShort · **Posted:** Fri Aug 03, 2012 9:29 am

That's not traditional clutch based (salisbury style) LSD noise. That sounds like a bearing failure or binding or bad preload/backlash etc etc due to a poor install/setup.

MikeWhitney · **Joined:** Wed Aug 20, 2003 9:15 pm **Posts:** 4724

JamesShort wrote:

That's not traditional clutch based (salisbury style) LSD noise. That sounds like a bearing failure or binding or bad preload/backlash etc etc due to a poor install/setup.

I agree, that's not traditional clutch based LSD noise. It's defective pile of dogshit clutch based LSD noise.

It's not bearings. It's just a ridicluosly chattery LSD. The diff is dead silent driving straight ahead. Now, I guess preload or something could be affecting it, but I can't see how. ECGS opened up the pumpkin and checked everything, it all measures and checks out fine.

Chase explained that the newer duragrips use METAL CLUTCHES (stupid) and several in the last 2 months have been manufactured incorrectly with a bad surface treatment on the metal or some kind of problem. I figure if the thing is so sensitive to surface condition that even if I got a quiet one now it could make noise later.

JamesShort · **Posted:** Fri Aug 03, 2012 10:01 am

MikeWhitney wrote:

JamesShort wrote:

That's not traditional clutch based (salisbury style) LSD noise. That sounds like a bearing failure or binding or bad preload/backlash etc etc due to a poor install/setup.

I agree, that's not traditional clutch based LSD noise. It's defective pile of dogshit clutch based LSD noise.

It's not bearings. It's just a ridicluosly chattery LSD. The diff is dead silent driving straight ahead. Now, I guess preload or something could be affecting it, but I can't see how. ECGS opened up the pumpkin and checked everything, it all measures and checks out fine.

Chase explained that the newer duragrips use METAL CLUTCHES (stupid) and several in the last 2 months have been manufactured incorrectly with a bad surface treatment on the metal or some kind of problem. I figure if the thing is so sensitive to surface condition that even if I got a quiet one now it could make noise later.

But there could be the case that under differential operation that the additional lateral load on the bearings due to the pressure rings spreading from the ramps could cause some odd noise if the bearings were messed up or something. I just don't think chattery diff noise could ever sound so high pitched and 'screechy', but I may be wrong.

THSCC Forums

Truck gurus -- LSD for the Durango?

Who is online