Re: dakota sure-grip

From: Jarrod Pilone (moparman@jet.laker.net)
Date: Tue Jul 01 1997 - 08:20:46 EDT


why do you guys still call it a sure grip?. the old chrysler sure grip is
no longer in production vehicles, the sure grip is a cone style
differential, it is far superior to the crap limited slip clutch pack difs
used today in dodge trucks. they now call it the "anti-spin" differential.

Jarrod Pilone moparman@laker.net
http://falcon.laker.net/moparman
'97 Dakota CC Sport V8, Flowmaster, FIPK
'72 Dodge Demon, future 12 second 1/4 mile car

----------
> From: Frank Ball <frankb@cougar.sr.hp.com>
> To: dakota@ait.fredonia.edu
> Subject: dakota sure-grip
> Date: Tuesday, July 01, 1997 12:40 AM
>
> } Subject: Re: Suregrip not so sure...
> }
> } I have a '97 reg cab 4x4 with the "limited slip dif" option code on the
> } options sticker of the glove box. If I nail it from a dead stop, then I
> } get two strips of rubber. So far so good.
>
> You definately have a sure-grip.
>
> } get two strips of rubber. So far so good. If I have the truck cornering
> } hard (and I mean *really* hard), the inside rear tire comes up, and
just
> } spins uselessly with no power getting to the ground at all. After a
>
> There is a spec for the preload of the clutch pack in the sure-grip.
> Lift only one rear wheel off the ground and use a torque wrench to
> measure how hard it is to turn the wheel that is in the air. Spec is
> between 30 and 200 ft-lbs. This requires a special tool to locate the
> torque wrench at the center of the axle, not at a lug nut. You could
> either fabricate a tool or mathematically calculate the torque at at the
> lug nut. This is a very wide specification, 200/30 is almost a torque
> range of 7 to 1. I haven't measured mine, but it locks up at a touch of
> the gas pedal. In town when turning pulling away from a stop sign I
> have to take it *very* easy to keep from squealling. The more torque
> that is applied to the rear end the tighter the clutch pack tries to
> lock the rear wheels together, but if one wheel is in the air then there
> is only the preload tension on the clutch. Mine will keep power to both
> wheels under very low traction situations like backing up, uphill, in
> mud.
>
> } second or so of being dead in the water (and bouncing off the rev.
> } limiter a couple of times), the inside tire comes down with a driveline
> } wrenching bang/squeal, and things get underway again. Same thing
happens
> } if I try to "spin" the truck around under power at more than 10-15 mph
> } (the unloaded tire seems to get all the power, rather than both tires
so
> } I can spin the truck around). Is this the way that suregrip works on
> } these trucks?? I'm use to a torsen limited slip in my Supra which works
> } at any speed and I can easly "spin" the car around with power.
>
> I think your problem is keeping the wheels on the ground. I don't
> normally spin it on dry pavement, but I've had it come loose and start
> to come around under full throttle in 2nd. I have a 2WD (3" lower than
> a 4WD) with a Addco rear anti-sway bar. I also have the 2000 pound rear
> springs and stiffer front shocks (KYB).
>
> Frank Ball 1UR-M frankb@sr.hp.com (707) 794-4168 work
> Hewlett Packard (707) 794-3038 fax (707) 538-3693 home
> 1212 Valley House Drive Kawi KDX200, Yamaha XT350 YZF600R Seca 750
> Rohnert Park CA 94928-4999 '95 Dakota SLT Club Cab V8 5-Speed 2WD

 



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