Suregrip issue or feature?

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Gramps? I guess I could be? Whats your Grandma's name? I asked a question in post 11. You'll know when I'm trolling? What ever that is?

I understand how your strategy works when you troll. Poke at people trying to elicit a response then throw more insults so I'm not taking it very personal, because you don't really know me. However, you should think about what the fallout might be. My wife just read that comment and is beside herself with grief and anger. My grandmother just recently died of lung cancer after a long horrible battle. I'm not kidding. That is a fact. She's also the only person in the world that was there to take me and my brothers in when my actual parents weren't around. They are fresh wounds, but thanks for ripping the scabs off.
 
Did you tell her to read the whole thread? Did you tell her you started it? I didn't think so. But I'll leave you alone now, I wouldn't want to be blamed for what may happen. Good Day!
 
That's a good thought. I normally go counter-clockwise for center-of-gravity reasons, but I'll try going clockwise.

try ya donut in opposite direction than ya chevy/ford...mopars weaker side opposite from them...

It doesn't work the other direction either. I just noticed something, though. It starts to go sideways for a little while then a clunk and then it stops going sideways.
 
sounds like one tire barely spinning other getting most the power and spinning real good then probably wore out differential or its a limited slip diff!! could have wrong grease in it or old grease not working the posi right...bout all it could be...
 
sounds like one tire barely spinning other getting most the power and spinning real good then probably wore out differential or its a limited slip diff!! could have wrong grease in it or old grease not working the posi right...bout all it could be...

Thanks, I'll have it looked at.
 
If the tires are streets and 295s or less, and
if the Mopar SG is working right,and
if you don't have any auxiliary traction devices installed,
then it will do fabulous donuts; you're not doing it right.
My car can do 'em practically at idle.
If your wheel speed gets to be too high, it will whip around, lose inertia,stall the maneuver, and you get to start over. If you are using the brakes, you're not doing it right. If you have the steering wheel at full lock, you're not doing it right.If you are starting in second gear, you are probably not doing it right.
The SG is only loaded on the initial hit. Once the tires are up to speed, there is very little resistance to the SG.
Jack one wheel up at the back, put the tranny in neutral, and attempt to rotate the wheel. I set my Cone-types up with up to 120 ftlbs breakaway torque, and or 100ftlbs turning torque.This is enough to let them slip on the turns yet still lay twin stripes. You should not be able to turn it.
If you have a clutch type, they work different.
If you have a non-Mopar unit back there, I cannot say how it works .
The smaller the circle, the less wheel-speed it will want.
I can do 'em with the inside front wheel practically parked on the centerline of the hiway, with just enough Rs to keep the tires rotating. And I can do 150 ft circles on gravel sitting on the rev limiter in second, or part throttle in third.
I know how to do it right.
But I have been practicing since 1969.
Leave the brake pedal alone.Donuts is not drifting.
Sticky tires make it harder to regulate the power, as the tires are constantly wanting to bite. Try some BFGs or Coopers.
And you have to have enough footpounds into the rear axles, and a carb that you can control that torque with.If the secondaries have a mind of their own, it's like ABS brakes, and traction control......WTH, gimme a break.
You are not gonna do donuts with a slanty and 2.76s. Probably not with a teener and 2.76s;at least not with the stock TC. You just can't put enough torque down. On asphalt,I'm gonna say it takes about 1500ft lbs or more into 295s. This is a starter gear of 10 or 11, to 1, and a stout small block making at least 150 ftlbs by stall speed.
It is easy to overspeed your tires with smaller number rear gears.
It is easier to control torque delivery with bigger number rear gears
A teener gas no problem with 4.30s, a 2.74low, and a 2800TC.


BTW;
I like doing donuts too.And I also like doing figure 8s.
In hi-school, I charged extra for those.
It used to make my kids squeal with delight.My teenage son would often egg me on.Now it just makes the cops smile when they are writing out the tickets and telling me how dangerous it is and how they could throw the book at me and how I'd never drive again. But the last time, the Boys in Blue just said how well I was doing, and here's your $325 ticket, could I please find somewhere else to practice,lol.
I don't go out and boil the hides tho. I've seen too many burn-out contests.
 
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Staying on topic....

I think it's a combination of several posts above, having heard a little more of the story.

It sounds like a Cone sure grip that's on its last legs. My car currently has several bent valves due to this issue, while trying to do the same thing; straight line, torque distributing is even, and both spin.

Factor in that a Mopar leaf spring suspension is basically a two-link system, it does regulate the power more efficiently in a situation approximating cornering. The Ford and GM stuff had a lot more play in the axle which constantly loaded and unloaded the tires.

The Mopar is more consistent, so as the cornering (or similar, ahem) starts, the load applies more consistently to one tire, and a worn cone sure grip bottoms out and begins to unlock. There's a good tutorial on them in the diy section iirc.

Sgbcuda, he's doing his thing and not hurting anybody. Maybe he's recycling used tires to get the maximum useful life outta them. Maybe he's a driving instructor. Maybe he's got an inner ear problem. If he's safe, respect it.

New guy: try to calm down a little. If a guy comes across wrong, pm him and ask him politely what you ever did to him. He'll probably look at it, go, oh yeah, that guys just enjoying his car, and maybe like, you know, kinship can be had.

Then we can all go back to hating on people who can't drive and spin out into crowds of people and stuff.
 
When i was 16 i had a 1960 f100. with a 292 v8. it had 4 brand new snow tires on it and 4 more in the bed with rims.
I could floor it and dump the clutch and its would just bark the tires and then bog.
I learned that if you got going FAST in reverse and then dump the clutch in 2 gear that you could make a good smokey burn out before you stop going backward. server time doing that i could burn rubber around the corner.
8 snow tires last, in 2 months, cost me the spider gears in the rear end.
My parents were so pleased with me. After getting another third member from the wrecking yard, and scrounging up Some tires for the rear, with my part time job......i calmed down a little:usflag:
 
Not sure which way you are turning, but every Mopar I have owned prefers a left hand turn at full throttle. Your sure grip should break hard and spin on a dime is multiple tight s's!
 
So I have this straight, you have a Chevelle, a Mustang, and a drifting car, and you can't get your Dart, which does spin both rear tires at once, to do a donut?
Do I have that all correct?
 
Comments in quote;click to expand
I have a 1972 dart with the big block treatment and a 5 speed Tremec. I put an 8 3/4 a body rear end in it with suregrip. I also had it rebuilt. is that with a 2.95, or deeper low gear?
It's very fun, but I think it's not working right or maybe it is and I dont understand how it should work.
I can't do donuts. My Mustang and Chevelle will kick the rearend out and slide around in circles until I get dizzy, but not the Dart. It tries to kick out a little (maybe six inches sideways) and then suddenly stops. At that point it still spins the tires, but only in a straight line.So it's still spinning both tires?If yes than the LSD is working right.
Is my Suregrip broken or is that how they work? NO! That is not how they work. And it's not broken if both wheels are spinning.
If the car quits rotating it may be that the wheel speed is too little or too much. If you have a high number rear gear like 4.30s, and coupled with a 2.95 or greater low gear, this is a starter gear in excess of 12.7, great for drag-racing, but not so much for donuts; you just can't get enough wheelspeed to maintain the slide. If I'm, right, then the easy fix is using second gear. This will get you a donut gear of about 8.2. So with a big block, you just break then loose and dial in the revs ,only as much as it takes, you should have enough torque by 3500 to initiate a nice donut at about 50% left steer.Then adjust the throttle so as not to overspeed the maneuver. Then tighten up the circle, and reduce the throttle, til the wheels are just howling not screaming. Do a couple of lefties then snap the steering wheel over hard right while simultaneously increasing the Rs a bit. As she begins the right hand circle, reduce throttle until the tires are just howling again. If the car is too fast in transitioning left to right, it will want to swing the tail out, and stop rotating. If it transitions too slow, it will stop altogether and try to power ahead, and you get to start over. Rightees are tougher, cuz the engine torque is trying to lift the inside rear wheel, and BBs have a lot of torque. It works better with HD rear shocks, that slow that corner from lifting. Soft rear springs are no help either. A really big front sway-bar will make rightees easier as will big T-bars. Skinny tires suck at this, 275/60s are better, 295/50s are great. A line-loc is a great help to getting the tires up to speed. You just set the front brakes, bust the tires loose, get the wheelspeed up a bit, release the brakes,launch ahead a couple of feet and dial in some left steer, then; Hang on!


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To Thomas;
Not to pipe in unwarranted but sounds like the Sure Grip is failing. Both tires start to spin then clunk (SG letting go) then straight. When the SG releases, it will allow one tire to spin and the other will stick and therefor send the car straight.
Simple quick video from outside of car would show it.
That's my 1 cent worth.
(Cuz I am only half as smart as most of these guys)
Good luck.
 
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