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8.8 Limited Slip Diff

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Old Nov 30, 2003 | 10:24 PM
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From: BLOUNTVILLE
Post 8.8 Limited Slip Diff

i need some help with my 1994 f-150 8.8 limited slip diff.
i purchasaeda complete new carrier from ford and in 3000 miles the clutches were slipping
they gave me a new set of clutches and in 2000 miles they were slipping again
they then warranteed the entire carrier and it ahs been in onmly 3000 miles and is slipping again
i used the ford additive and 85/90 grease for limited slip diff's
both tires are the same size and there has been no spinning of one wheel
i am at a loss to know waht to do


Edit: Please do not use all caps when posting
 

Last edited by MustangGT221; Dec 1, 2003 at 04:25 PM.
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Old Dec 1, 2003 | 12:14 AM
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c96drumm
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Well, it IS a limited slip, so some slippage will occur. You say there is no spinning of one wheel, so I'm not too clear on what the problem is.
 
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Old Dec 1, 2003 | 07:28 AM
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Originally posted by c96drumm
Well, it IS a limited slip, so some slippage will occur. You say there is no spinning of one wheel, so I'm not too clear on what the problem is.
I WAS REFERING TO SPINNING ONE WHEEL A LOT TO WEAR OUT THE CLUTCHES
ONE WHEEL WILL SPIN NOW VERY EASY
 
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Old Dec 1, 2003 | 03:10 PM
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Are they sure it's not missing a disc or two, or the springs are weak?
 
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Old Dec 1, 2003 | 07:56 PM
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From: BLOUNTVILLE
NO THE TORQUE CHECKED WITHIN SPEC WHEN THEY WERE INSTALLED AND THE SPRINGS WERE NEW BOTH TIMES

THNAKS JIM
 
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Old Dec 2, 2003 | 01:53 PM
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If you are doing the work yourself (replacing the clutches) you can re-arrange them to increase the holding torque by about 30%. I will dig through some old mustang mags to find the procedure if you like. Worked for me on both my Ponies.
 
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Old Dec 2, 2003 | 02:56 PM
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From: BLOUNTVILLE
thanks but i would like to figure out why they are wearing out so fats

jim
 
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Old Dec 2, 2003 | 04:42 PM
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did you allow proper breakin of the parts. all new barts require time to break in. around 1000 miles with oil changes at 200 and 500 miles.
 
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Old Dec 2, 2003 | 07:58 PM
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Originally posted by thwmathue
did you allow proper breakin of the parts. all new barts require time to break in. around 1000 miles with oil changes at 200 and 500 miles.
I've never heard that before. Ford barely recommends to change the grease every 100000 miles.
 
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Old Dec 2, 2003 | 08:44 PM
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Hey, Jim, what happened that made you need a new carrier in the first place? Did you get better wear before that? And do you do a whole lot of driving in slippery conditions?
Don't know how much help I can be, personally, I just thought that more info might help get more ideas for you. Good luck and keep us posted.
 
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Old Dec 2, 2003 | 09:08 PM
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From: BLOUNTVILLE
the original diff was complketely worn out when i bought the truck
i have never driven it in slippery conditions

thanks jim
 
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Old Dec 3, 2003 | 06:05 AM
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ford may not say anything about it but after market clutch makers recomend oil change at 200, 500, and every 5000 miles after that. this is off the instuctions i reseved with the clutch packs i just got for my truck (88 f-150 300 L6 4spd)
 
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Old Dec 3, 2003 | 08:15 AM
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From: BLOUNTVILLE
thanks for the info
 
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