The factory limited slip rearend on my "X" does not seem to work well at all. If one rear tire is on any even remotely slick surface it just sits and spins. Does not help when I apply a little brake to try to get the limited slip to engage.
Is this unique to my "X" or is the Ford factory limited slip worthless?
Maybe the "X" is too heavy for the limited slip to work properly and the clutches just slip.
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04/04 PSD X 4X4, Oxford White EB, October '03 build, all options except 2nd row captain's chairs and chrome step tubes, stock drivetrain, no flashes (still have quiet idle and original tow/haul), Donahoe 4.5" Spring Hanger Lift, High Angle Driveline CV Driveshaft, American Racing 17X9 Chrome Chamber Rims, Toyo 35X12.5R17 Open Country M/T's, PSD Badges, Yakima MegaWarrior roof rack with extension and King Cobra bike carriers mounted outboard, AMP Research Power Retracting Running Boards, Brakesmart Controller, Radius Rods, Firestone air springs with on board compressor, C-Bet'r mirrors, Marinco block heater plug in front bumper. Towing 28 ft. Sunline TT with slide room (7500#).
2001 Dodge RAM 1500 Quad Cab, Intense Blue/Silver two-tone, 4X4, 360, auto, 4.10 gears, Off Road Package, Daystar 2" front lift, 285/75R17 MT/R's, K&N Intake, Gibson stainless cat back, Line X spray in bed liner, Firestone air bags w/ on board compressor. Boss 7'6" plow.
Mine works great. Seems some work well and some do not.
__________________ 2004 EB Excursion, 4x4, 6.0, everything but step tubes and 2nd row chairs, Magnaflow Exhaust, Isspro Gauges in an under cubby pod, Fumoto sitting on V Codes and Revo 285's.
"Treat me good, I'll treat you better; treat me bad, I'll treat you worse." - Sonny Barger
I've been in sand with mine alot with no problems in the rear end. Also back woods muddy trails on Turkey hunts with no problems.
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Steve O
04 4WD Excursion
5.5 DR lift w/ modified V and B codes
37" ProComp XTreme AT's
4:30 gears
Onboard air w/ horns
FS2500 Filter system
Spearco Intercooler
Search the 7.3L and general forums, you'll see lots of posts critical of the stock LS. When my diff 'deconstructed' after a pinion seal leak, I had it rebuilt using the Detroit truetrac 'geared' LS. A great improvement. Other posters have rebuilt the stock LS clutches to improve the grip.
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2000 F250 4x2 Supercab XLT; Detroit Truetrac ltd slip diff. w/PML aluminum cover; FTVB; BTM; PF pads in the front. DP Tuner stock/60tow/80econ. 203 'stat, Cat ELC coolant, Gauges, Ford AIS, Bilsteins, Michelin LTX M/S, B&W gooseneck in a Line-X sprayed bed; UWS low profile tool box. Towing a 2004 CM Winstar 4 horse trailer loaded with quarterhorses, whenever possible ....
Wife's New Ride: 1999 Mercedes Benz E300 Turbo Diesel Sedan
I had the truck stuck last weekend. The one "trick" that sometimes works (or helps) is to apply firm brake pressure. The stock LS system can only transfer twice as much torque as is being "resisted" by the spinning wheel. This works well on wet or dry pavement where the spinning wheel has a fair amount of traction, but it works poorly in mud or snow.
Applying the brake and accelerator at the same time puts more resistance on the spinning wheel and allows more torque transfer to the non-spinning wheel.
Another dumb question. Does Limited Slip work in reverse? I had one wheel on the grass and one on cement trying to back my boat in the driveway and I could't move. The wheel on the grass just spun the one on cement did nothing.
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2000 Ex Limited 4x4 7.3L, AFE Stage 2 w/Proguard 7 Filter, 4" Turbo Back Exhaust, Edge EZ, Edge Evolution, Dynafact Gauges w/Pod (Boost, Trans Temp, EGT), Dueler Revo 285x75r16 Tires, 6.0 Transmission Cooler, Rancho 9000X Shocks, ART Frozen Rotors, Hellwig rear anti-sway bar, 203* Stat
Look at the rear diff cover for the axle tag that will be affixed to the cover using two of the twelve bolts. It will indiate the axle ratio, and if you see the letters "LS", your truck is equiped with the limited slip unit.
It is a fair design using three pinions for spider gears, instead of the common two-pinion design used in the older Sterling axles like my '97 came equiped with. But it does not perform that well. I went ahead and put in a Detroit Locker with outstanding results. Only an occasional (and rare) bang when it is upset and resets itself after going around a tight corner.
pwrboatr,
Yes, any traction unit will work in reverse.
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Ed Bauer's '05 True Blue 6.0L Ex
2nd Row Captain's Chairs, DVD System, etc.
X-Code Front Springs, 4" Rear Tapered Blocks, rear Detroit Locker, & Bilsteins all around
[ QUOTE ]
I had the truck stuck last weekend. The one "trick" that sometimes works (or helps) is to apply firm brake pressure. The stock LS system can only transfer twice as much torque as is being "resisted" by the spinning wheel. This works well on wet or dry pavement where the spinning wheel has a fair amount of traction, but it works poorly in mud or snow.
Applying the brake and accelerator at the same time puts more resistance on the spinning wheel and allows more torque transfer to the non-spinning wheel.
[/ QUOTE ]
Bingo! What he said. [img]/ubbthreads/images/graemlins/laugh.gif[/img]
__________________ 2004 EB Excursion, 4x4, 6.0, everything but step tubes and 2nd row chairs, Magnaflow Exhaust, Isspro Gauges in an under cubby pod, Fumoto sitting on V Codes and Revo 285's.
"Treat me good, I'll treat you better; treat me bad, I'll treat you worse." - Sonny Barger
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