[torsen] Upgraded Diff Lock project complete
QSHIPQ at aol.com
QSHIPQ at aol.com
Sat Jan 27 11:09:02 EST 2001
After 3 years on the shelf, I bit the bullet and installed 2 diff lock
controller units donated from 2 urs4 cars into my '83 tqc. FYI, I installed
the '87tq 2 scene diff graphics, 2 urs4 diff lock switches and 1 vision
series 30Hg>25psi vdo boost guage into the diff lock center panel. I must
say, I have waaaaay to much time in this mod, but it works really well, and
looks stock in the car. Looking forward to trying it out at steamboat next
Not sure about the overheat protection circuit I was advised of, but my
45minute ops check last night included center diff locked the whole time,
without any cutout. I also hand tested for heat buildup, didn't notice any,
but I'm bringing my drill to steamboat just in case ;).
Works as follows:
Switches are stacked just to the right of the graphic panel, upper switch
controls front diff, lower switch controls rear diff (you can engage them
independently only, my reasoning is that I run center diff locked pretty much
all the time in spirited driving anyhow). Push switch once, diff goes on,
push switch again, diff goes off, that simple. Per the later style diff
locks, the switch triangle comes on/goes off with the touch, but the actual
LED waits for the signal from the switches mounted in the trans/diff. I have
retained the speed input cutout for a master cutoff switch that I may mount
The A/C is removed from both my Urq's, so I mounted the controllers to the
back of the glove box, made a custom harness for the controllers to switch
panel, and piggybacked the 2 extra (rear) diff lines thru the center console
to the back.
Without question the best mod I've done to the gen 1 quattro system.
I'll give a more detailed report following a more grueling test flight at
Steamboat next weekend.
More information about the Torsen