Rebuilt SureGrip Noise When Turning
#2605536
01/12/19 07:00 PM
01/12/19 07:00 PM
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Joined: Nov 2004
Posts: 25,050 Texas
GoodysGotaCuda
OP
5.7L Hemi, 6spd
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OP
5.7L Hemi, 6spd
Joined: Nov 2004
Posts: 25,050
Texas
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Seeking input from the well of knowledge before I drop this 3rd member again. A few weeks ago I grenaded my SureGrip and it consumed two spider gears. I bought new: - Spider Gears
- Side gears
- Cross pins
- Carrier and Pinion Bearings
- Ring and Pinion
- Mobil 1 75w-90 gear oil w/o additional friction modifier
Following the factory service manual I disassembled and rebuilt it, followed with ring and pinion setup. Condition I have is heard within the video below. Any turn input results in that popping sound, at faster speeds it's an obvious gear noise. The differential does not act like it's a spool or excessively tight, it just sounds horrid. I have 15 miles or so on the rebuild, initially the diff did not make any noise. It became apparent when I went to make a u-turn at ~mile 7 of my test drive. The gears and diff have no problem with straight line driving and are smooth and quiet. Given the low mileage and the fact this is the first SureGrip I have messed with, I assume there is not a "break in" on the differential itself, right? In 15 miles of driving, the spider gears only differentiate only a few feet. Video is of a light turn into my garage. https://youtu.be/PP2lIY0B_hY [video:youtube] https://www.youtube.com/embed/PP2lIY0B_hY[/video]
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Re: Rebuilt SureGrip Noise When Turning
[Re: GoodysGotaCuda]
#2605545
01/12/19 07:31 PM
01/12/19 07:31 PM
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Joined: Jan 2003
Posts: 1,908 Nebraska
4406bbl
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,908
Nebraska
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Ya that sounds like the axles ringing. My 4x4 with clutch danas front and rear, the rear would do that after diffs got hot pushing snow. I tried everything, ended up with castrol syntec in it and its fine now after 100,000 miles. I changed the clutch packs from steel on steel to lined, still did it. Castrol worked for me, nothing ever broke, and the rear is only 30 spline, it still does it after a long tow with weight in it. Still bothers me, waiting to bust an axle.
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Re: Rebuilt SureGrip Noise When Turning
[Re: GoodysGotaCuda]
#2605550
01/12/19 07:49 PM
01/12/19 07:49 PM
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Joined: Jan 2003
Posts: 15,489 Omaha Ne
TJP
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 15,489
Omaha Ne
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IS this a clutch or spring style sure grip ??? Myself, I would pull it back out as it obviously is not "clutching" (EDIT) OOOPPPS didn't see the part about not using the friction modifier. Definitely give it a shot.
Last edited by TJP; 01/12/19 07:52 PM.
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Re: Rebuilt SureGrip Noise When Turning
[Re: GoodysGotaCuda]
#2605554
01/12/19 07:54 PM
01/12/19 07:54 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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w/o additional friction modifierthat friction modifier is there for that reason From Doctor Diff's site "limited slip additive is recommended for Mopar 8.75" and Dana 60 clutch or cone style sure-grips. 1 bottle controls clutch sticking and chatter." http://www.doctordiff.com/friction-modifier.htmlThe FSM is very specific about using the correct lubricant with a SG. treed, lol
Last edited by Supercuda; 01/12/19 07:55 PM. Reason: treed
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Rebuilt SureGrip Noise When Turning
[Re: GoodysGotaCuda]
#2605750
01/13/19 04:32 AM
01/13/19 04:32 AM
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Joined: Dec 2004
Posts: 10,556 Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
Joined: Dec 2004
Posts: 10,556
Rittman Ohio
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Hate to play Monday morning QB but you need to soak the clutch plates in friction modifier before assembly as per Doctor Diff instructions. Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
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Re: Rebuilt SureGrip Noise When Turning
[Re: NachoRT74]
#2605845
01/13/19 01:20 PM
01/13/19 01:20 PM
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Joined: Feb 2003
Posts: 16,161 Mesa, Arizona
dart4forte
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 16,161
Mesa, Arizona
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Had the same problem with the GTS. I used the GM version. I didn’t add enough. Added another bottle, solved the problem.
“So if it’s on the internet it must be true”
Abe Lincoln
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Re: Rebuilt SureGrip Noise When Turning
[Re: GoodysGotaCuda]
#2606289
01/14/19 02:47 AM
01/14/19 02:47 AM
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Joined: Jan 2003
Posts: 10,631 Freeport IL USA
poorboy
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,631
Freeport IL USA
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One thing that will help is to do slow figure 8"s in a paved parking lot, Ford suggests 10 slow figure 8"s. The figure 8"s causes the clutches to open up and unload, That lets the modifier get between the clutch plates and the friction discs faster. Ford also recommended this to be done yearly (according to the Service Manager at one of the dealerships I worked at that used to work at Ford back in the 70s.
In answer to Mopars4ever, the modifier allows the clutch discs to slide on the clutch plates, I suppose too much probably isn't a good thing, but the question is how much is too much? The bottle posted earlier is 4 oz, given how much lube is in the diff, I wouldn't think 2-3 bottles would be too much, but if you approach 25% modifier, I suspect your looking for trouble. Gene
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