QT torque bias test

Stock FSJ Tech Area
User avatar
Curly
Posts: 190
Joined: Fri Mar 13, 2015 11:31 pm

QT torque bias test

Postby Curly » Tue Oct 09, 2018 7:19 pm

I have a rebuilt QT I want to install in my Cherokee. I decided to do the torque bias test as outlined in the manual. Problem is I don't know what to expect. I think there is no slippage, I am maxing out my Torque wrench with no discernible change in the transfer case. I did remove the e-drive cover and shifter to make sure it isn't in e-drive. The shift collar is all the way back against the case and I cannot get it to move by prying on it with a screwdriver.
The only change I made to the case was the addition of a spacer in the differential. The exploded view shows one on each end of the gear set, mine only had one when I took it apart. I was able to source an identical spacer (same O.D, I.D and thickness) and installed it. I am wondering if this changed the preload.

Any advice/input?

Thanks
I start what I finish.

77 Cherokee S
97 Jeep Wrangler

User avatar
fulsizjeep
Moderator
Posts: 4319
Joined: Sun Nov 06, 2011 7:21 am
Location: Mancos Valley, CO
Contact:

Re: QT torque bias test

Postby fulsizjeep » Wed Oct 10, 2018 11:19 am

I have been replying to your post in AZFSJ on Facebook.
Sent from my IBM 5150 using TN5250 emulation.

Flint Boardman ~ http://jubileejeeps.org
Embracing the Borg Warner QuadraTrac since 1980 http://jubileejeeps.org/quadratrac
88 GW, 401/727/208, 5" lift, D44s/4.10s/locked up, 35s, a few Evil Twin mods, http://eviltwinfab.com and a few TT's Fabworks mods, http://www.ttsfabworks.com
76 401 Wag, 77 401 Wag, 77 401 J20

78 Arizona Chief
Posts: 232
Joined: Thu Nov 14, 2013 7:27 pm
Location: Gilbert, AZ

Re: QT torque bias test

Postby 78 Arizona Chief » Thu Oct 11, 2018 8:42 am

It sounds like it has far too much pre-load. I am a long time full-time QT enthusiast and prefer my diffs to operate at the lower range of torque bias as it seems to keep the diffs living longer. Now if I was living in the snow or rain I would want it to behave just like the manual prescribes. I live in dry hot az so it works for me. How did the diff look inside? If you want to pull the diff and bring it over, we can take a look at it. I also have extra washers and springs we can try inside that diff too to get it set.
Kevin
1978 Cherokee Chief: Parents bought new. 360/TH400/NOS Quadratrac, 44's/ARB's/4.10's, SOA, Shackle Flip, Alcan Springs, Bilstein 5100's, 35" BFG KM2s, custom bumpers, 324,000 miles and counting...

User avatar
Curly
Posts: 190
Joined: Fri Mar 13, 2015 11:31 pm

Re: QT torque bias test

Postby Curly » Thu Oct 11, 2018 12:32 pm

Hi kevin, I will be at TITD, do you mind if we look at there? Edit: If not, I can come down to the Phx area when it is convenient for you. I am in the Verde Valley, near Sedona.

Thanks
Tim
I start what I finish.

77 Cherokee S
97 Jeep Wrangler


Return to “Stock FSJ Tech”

Who is online

Users browsing this forum: No registered users and 6 guests