Limited Slip Differential Question
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Mountain Pass
Joined: Dec 2005
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From: Idaho
Limited Slip Differential Question
Does anybody know how Fords LSD actually works.My 2008 F250 has LSD and has right wheel peel only on snow and ice.The left side won't engage at any point.My 2006 F250 would have traction with both rear wheels until you got going. Thanks
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Joined: Nov 2007
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Originally Posted by BASSHUNTER
Does anybody know how Fords LSD actually works.My 2008 F250 has LSD and has right wheel peel only on snow and ice.The left side won't engage at any point.My 2006 F250 would have traction with both rear wheels until you got going. Thanks
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Mountain Pass
Joined: Dec 2005
Posts: 159
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From: Idaho
Thanks for the Info. I just returned from BullyDog Performance tech shop where they installed the new PMT and it run's Great! I have an appointment next week to have Ford look at the LSD.
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Originally Posted by theblueox
I had the same problem and took my truck in. They said the ls was ok but repacked it. My ls still does not work the way it should.
That will solve your problem. plus a good posi lube additive
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Mountain Pass
Joined: Dec 2005
Posts: 159
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From: Idaho
Tom, Thanks for the info. I have an appt next week,I know the service guy's real well so i will pass the info on to them on the spacers and posi lube.I just hate tearing into a brand new rear diff with only 8700 miles on it,But i want it to work right!
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I'm not trying to hijack the thread, Basshunter, but how do you like the PMT so for? I have one ordered and it should be in sometime next week. I can't understand why Bully Dog gets so much disrespect on this forum!
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Mountain Pass
Joined: Dec 2005
Posts: 159
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From: Idaho
Vic, The PMT works awesome so far! Have only had it in since tuesday.My good friend is one of the owners of BD.so i have a great inside there.The new Pmt has 3 levels of power Tow,Perf,Extreme which the first one only had 2 levels.I have only been able to put a couple hundred miles on so far.The big notice was comming home from BD there are a couple of long uphills and i was pulling a trailer that weighed about 2500 lbs behind and it never once shifted out of OD! It just motored up at 75 mph and kept goin.Before it would shift out of OD with nothin in tow so that's a plus so far.I think mileage will be 1-2 better.Good luck and let me know how your works.I do some testing so input is good!
Senior User
Joined: Feb 2006
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define LS - because limited slip is supposed to allow some torque to the wheel that grips. A open diff will let no to very minimal torque to the wheel that grips
I dont trust LS so im going to get selectable lockers when the time and money comes.
I do know if you change your rear diff fluid, do it with little or no friction modifier and it may help - but you may also get chatter around turns...
you cant really win i guess....
what do u mean the dealer "repacks" the clutches?
kenny
I dont trust LS so im going to get selectable lockers when the time and money comes.
I do know if you change your rear diff fluid, do it with little or no friction modifier and it may help - but you may also get chatter around turns...
you cant really win i guess....
what do u mean the dealer "repacks" the clutches?
kenny
Junior User
Joined: Mar 2006
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I had the dealer pack it tight but I guess not tight enough.
From the LS that I have set up it takes about 200 lbs of force to rotate a tire. The stock LS only takes about 30 Lbs.
I've had either LS or Detroit lockers in all my vehicles.
From the LS that I have set up it takes about 200 lbs of force to rotate a tire. The stock LS only takes about 30 Lbs.
I've had either LS or Detroit lockers in all my vehicles.
Senior User
Joined: Feb 2006
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Originally Posted by theblueox
I had the dealer pack it tight but I guess not tight enough.
From the LS that I have set up it takes about 200 lbs of force to rotate a tire. The stock LS only takes about 30 Lbs.
I've had either LS or Detroit lockers in all my vehicles.
From the LS that I have set up it takes about 200 lbs of force to rotate a tire. The stock LS only takes about 30 Lbs.
I've had either LS or Detroit lockers in all my vehicles.
kenny
Elder User
Joined: Sep 2004
Posts: 543
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From: Northern VA
Guys-
I know with the LSD in the Mustang 8.8" rear, it was common to repack the clutches and change up the order to get more grip. I don't remember the exact order off hand but IIRC, instead of stacking the spacers and clutches in pairs, it was one at a time. I did this a couple times with my car before eventually switching to a T2R for road racing.
Anyone try this with a truck rear?
I know with the LSD in the Mustang 8.8" rear, it was common to repack the clutches and change up the order to get more grip. I don't remember the exact order off hand but IIRC, instead of stacking the spacers and clutches in pairs, it was one at a time. I did this a couple times with my car before eventually switching to a T2R for road racing.
Anyone try this with a truck rear?
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From: Kingsland, GA