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Re: Cone Type Sure Grip
[Re: parksr5]
#3138323
04/15/23 08:30 PM
04/15/23 08:30 PM
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Joined: Aug 2011
Posts: 2,861
Pattison Texas
CSK
master
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master
Joined: Aug 2011
Posts: 2,861
Pattison Texas
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The cones wear & the case wears where the cones sit & the spring tension is reduced & then they wear more, they are JUNK
1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5
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Re: Cone Type Sure Grip
[Re: CSK]
#3138325
04/15/23 08:36 PM
04/15/23 08:36 PM
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Joined: Mar 2009
Posts: 889
Oh
parksr5
OP
super stock
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OP
super stock
Joined: Mar 2009
Posts: 889
Oh
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The cones wear & the case wears where the cones sit & the spring it is reduced & then they wear more, they are JUNK I get this but, what happens to the function of the unit as this wear occurs? Does it simply begin to slip and not put as much power to the wheels, maybe put power to the wheels unevenly, maybe one wheel starts not to spin much at all? I get how they wear but, what happens as a result of the wear?
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Re: Cone Type Sure Grip
[Re: parksr5]
#3138332
04/15/23 08:58 PM
04/15/23 08:58 PM
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Joined: Aug 2011
Posts: 2,861
Pattison Texas
CSK
master
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master
Joined: Aug 2011
Posts: 2,861
Pattison Texas
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It starts working like a single track Differential
Last edited by CSK; 04/15/23 08:59 PM.
1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5
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Re: Cone Type Sure Grip
[Re: parksr5]
#3138333
04/15/23 09:02 PM
04/15/23 09:02 PM
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Joined: Jan 2003
Posts: 12,085
Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,085
Benton, IL.
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It is an inner cone on the axle that binds into the outer housing of the same shape that makes it a Sure-Grip. When the cone wears enough, it 'bottoms out' preventing the 2 surfaces from being able to 'bind' into each other so it only puts power to one wheel at a time. I have bought a dozen or so over the years for next to nothing. Just take the smaller end of the cone down about .100" so that it not longer 'bottoms out' and it will hold again. You are supposed to shim the axle or something, but I never have and have never had a problem. They are not at all as good as the clutch pack type, but for a street car with street tires, they work fine given the limited mileage we typically put on them now a days. 
Master, again and still
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Re: Cone Type Sure Grip
[Re: parksr5]
#3138362
04/15/23 11:54 PM
04/15/23 11:54 PM
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Joined: Dec 2013
Posts: 4,674
Wichita
GY3
master
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master
Joined: Dec 2013
Posts: 4,674
Wichita
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I junked a brand new Mancini 3rd member with a cone sure grip in under a year with my stroker BB and drag radials. Started getting
"crunchy" and then just gave up and would only spin one tire.
'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: Cone Type Sure Grip
[Re: GY3]
#3138364
04/16/23 12:12 AM
04/16/23 12:12 AM
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Joined: Jan 2003
Posts: 5,108
Chicago Blackhawks
hemicar1971
master
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master
Joined: Jan 2003
Posts: 5,108
Chicago Blackhawks
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After 1970 Chrylser for some reason lost their minds with Hemi Four Speeds and sure grip rearends. People love 1971 Cudas but four speeds and Danas and crap in 1971, I own two 1971 Cudas and two 1971 Challengers that is why I know..
1971 HEMI E BODY REGISTRY
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Re: Cone Type Sure Grip
[Re: GY3]
#3138366
04/16/23 12:34 AM
04/16/23 12:34 AM
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Joined: Nov 2003
Posts: 10,228
Colleyville
3hundred
I Live Here
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I Live Here
Joined: Nov 2003
Posts: 10,228
Colleyville
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I junked a brand new Mancini 3rd member with a cone sure grip in under a year with my stroker BB and drag radials. Started getting
"crunchy" and then just gave up and would only spin one tire. Thanks for talking me out of of that one. 
'68 Fury Convertible
'69 300 Convertible
'15 Durango 5.7 Hemi
'16 300 S Hemi
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Re: Cone Type Sure Grip
[Re: DaveRS23]
#3138376
04/16/23 07:25 AM
04/16/23 07:25 AM
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Joined: Jan 2003
Posts: 6,392
nielsville, minn.
quickd100
master
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master
Joined: Jan 2003
Posts: 6,392
nielsville, minn.
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It is an inner cone on the axle that binds into the outer housing of the same shape that makes it a Sure-Grip. When the cone wears enough, it 'bottoms out' preventing the 2 surfaces from being able to 'bind' into each other so it only puts power to one wheel at a time. I have bought a dozen or so over the years for next to nothing. Just take the smaller end of the cone down about .100" so that it not longer 'bottoms out' and it will hold again. You are supposed to shim the axle or something, but I never have and have never had a problem. They are not at all as good as the clutch pack type, but for a street car with street tires, they work fine given the limited mileage we typically put on them now a days. Also take some front clutch springs from a torqueflite and install them inside the suregrip springs.
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Re: Cone Type Sure Grip
[Re: DaveRS23]
#3138383
04/16/23 08:49 AM
04/16/23 08:49 AM
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Joined: Jan 2008
Posts: 1,212
Minn
SportF
pro stock
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pro stock
Joined: Jan 2008
Posts: 1,212
Minn
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I agree with Dave 23. A lot of folks on the internet repeat what they hear, and not what they know. This is one of my all time favorite 3 topics,,,,,,,,,with Dot 5 being the top.
Take a look at the little itty bitty spyder gears in a clutch type, then look at a cone type. Alot of sypder gears get ate up before clutches go bad. Good luck.
Last edited by SportF; 04/16/23 08:52 AM.
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Re: Cone Type Sure Grip
[Re: 500ciDuster]
#3138478
04/16/23 03:28 PM
04/16/23 03:28 PM
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Joined: Dec 2004
Posts: 10,554
Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
Joined: Dec 2004
Posts: 10,554
Rittman Ohio
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All that metal that gets ground off the cone areas goes in the oil which circulates through all the bearings which bothers me a little bit This is why every diff I build gets a strong magnet in the bottom of the case. You wouldn't believe how fuzzy that magnet gets in a couple thousand miles. 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: Cone Type Sure Grip
[Re: DaveRS23]
#3139034
04/18/23 03:35 PM
04/18/23 03:35 PM
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Joined: Jan 2003
Posts: 75,012
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,012
U.S.S.A.
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It is an inner cone on the axle that binds into the outer housing of the same shape that makes it a Sure-Grip. When the cone wears enough, it 'bottoms out' preventing the 2 surfaces from being able to 'bind' into each other so it only puts power to one wheel at a time. I have bought a dozen or so over the years for next to nothing. Just take the smaller end of the cone down about .100" so that it not longer 'bottoms out' and it will hold again. You are supposed to shim the axle or something, but I never have and have never had a problem. They are not at all as good as the clutch pack type, but for a street car with street tires, they work fine given the limited mileage we typically put on them now a days. You left out the important part ... the cone wears AND deposits tiny metal particles in the oil which which gets run thru the bearings and gearset putting little pits into the polished surfaces. Cone types are total garbage , if you get enough metal in the oil and run it as a single track doing burnouts long enough the spiders will seize on their shaft, when this happens the shaft breaks the dowel pin that keeps it from spinning and then wallows out the cone case , now it's really junk.
running up my post count some more .
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Re: Cone Type Sure Grip
[Re: 500ciDuster]
#3139036
04/18/23 03:37 PM
04/18/23 03:37 PM
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Joined: Jan 2003
Posts: 75,012
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,012
U.S.S.A.
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All that metal that gets ground off the cone areas goes in the oil which circulates through all the bearings which bothers me a little bit It will bother you more than a little bit if you look at the bearing rollers and the gear teeth under magnification ...
running up my post count some more .
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Re: Cone Type Sure Grip
[Re: parksr5]
#3139039
04/18/23 03:40 PM
04/18/23 03:40 PM
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Joined: Jan 2003
Posts: 75,012
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,012
U.S.S.A.
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I've heard people share their dislike of cone type Sure Grip and Auburn differentials for years. "They're garbage" or "mine lasted for 9 months and was junk", etc. but, I've never heard people describe what actually was wrong.
Do they stop spinning both wheels, don't put all the power to the ground, make all types of noises or bind up, etc.? Maybe a combination or one or more of these things.
What exactly happens when they go bad? The auburn cone type is even a bigger piece of garbage than the borg warner chrysler cone type, at least you doing do a halfarsed rebuild to restore the function of the Borg warner unit ... and continue it depositing metal into the oil ... , the auburn you just toss it in the scrap bin
running up my post count some more .
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Re: Cone Type Sure Grip
[Re: JohnRR]
#3139092
04/18/23 07:49 PM
04/18/23 07:49 PM
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Joined: Jan 2003
Posts: 12,085
Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,085
Benton, IL.
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You have your opinion and I have my experience. I am glad many guys felt the way you do. 
Master, again and still
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