Rear End Clutch Chatter - Ford Mustang Forum
 
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post #1 of 3 (permalink) Old 06-19-2015 Thread Starter
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Rear End Clutch Chatter

So I decided to swap my stock differential cover in favor of the Ford Racing Finned Differential Cover and now I am getting clutch chatter when I take turns. Its not super noticeable, I only hear it with the windows down, but none the less it's still somewhat annoying. I used royal purple 75w140 when I replaced the cover which is supposed to have the friction modifier already in it. I drove it around for a little bit and noticed the noise so I added the 4oz bottle of ford friction modifier, and didn't really notice any difference in the noise. Does it take a while for the noise to go away, or is there something else I need to do to remedy the problem. I had no noise whatsoever before I removed the stock cover.


2014 Mustang GT 6R80, Procharger Stage 2 D1SC, BBK 85mm TB, Boss IM, Sai Li fuel system. Circle D 3C, 1-7/8" Kooks Long Tubes w/Offroad X Pipe, Lethal Over-Axle Pipes, Corsa Quad Axle-Back, Eibach Pro System Plus, BMR K member, Shaftmasters DS, Forgestar CF-5 Wheels and Nitto NT05 tires. Lund Tuned

Lots of suspension goodies and some other stuff I can't remember.
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post #2 of 3 (permalink) Old 06-20-2015
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Go to Ford and buy more of their friction modifier for limited slip diffs. Add 1/2 of it first and see if it goes away. If it doesn't, add the other half. I had to add a bottle and a half to quiet Redline HD shockproof back there.


2014 Premium GT, SGM, Brembo, Auto, Tech, Comfort, etc. GT500s, Steeda UCA, VMP auto tune, 100 shot on BBR tune, best et: 11.38 at 120.85

2012 GT, Candy Red, Brembo, 3.73, Tech, Comfort, etc. Procal tune, Roush upper, UMI LCAs, Steeda red bracket, GT500s, 28X10X16 Hoosier slicks, best et: 11.91 at 115.23 RIP
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post #3 of 3 (permalink) Old 06-20-2015 Thread Starter
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Ok, I'll try that. I wasn't sure about adding more modifier since the Royal Purple already has some in it. I have read on another forum however that some diffs need two bottles of the ford modifier to quiet the rear end noise.

2014 Mustang GT 6R80, Procharger Stage 2 D1SC, BBK 85mm TB, Boss IM, Sai Li fuel system. Circle D 3C, 1-7/8" Kooks Long Tubes w/Offroad X Pipe, Lethal Over-Axle Pipes, Corsa Quad Axle-Back, Eibach Pro System Plus, BMR K member, Shaftmasters DS, Forgestar CF-5 Wheels and Nitto NT05 tires. Lund Tuned

Lots of suspension goodies and some other stuff I can't remember.
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