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Author Topic:   Street Stock Rear End Woes...Help
Dirt Newbie

Total posts: 2
posted May 27, 2002 06:57 PM
My husband and I have a dirt street stock which we run on a small track. Someone told him that to make the car turn better to move the left rear tire foreward and right rear back (or vice versa I frequently mix the two up) Well...he tried this and since then we have been breaking shocks, trailing arms, and rolling tires right off the wheels. What is happening here? Could it be that the person telling him this has left out a compensating adjustment to avoid this problem? Do you think the car just cannot handle this type of set up? What can we do? He likes the way the car feels now, but it keeps breaking. How can we keep it together? We don't know a whole lot about this idea and how it affects the rest of the car. Can someone help us? Or should we just put the car back the way it was built? Please help...

Dirt Full Roller

Total posts: 43
posted May 27, 2002 08:00 PM
what do you have leaf or coil car and are you trying to rearsteer the car so that you can drive into the corner better?

Dirt Newbie

Total posts: 2
posted May 27, 2002 08:11 PM
Originally posted by malibuchevy2:
what do you have leaf or coil car and are you trying to rearsteer the car so that you can drive into the corner better?

coil. yes that is what we are trying to do...but everything else is breaking now...

Dirt Roller

Total posts: 19
posted May 27, 2002 11:13 PM
Measure your wheel base from the center of the front tire to the center of the rear tire on both sides of the car. Make sure that the driver side measures less than the passenger side. If it doesnt, that could be your problem. My car is set up with 113" on the driver side and 114" on the passenger side. I dont think you want to go more than 1" difference. Start by adjusting 1/4" at a time until it feels right.

Dirt Maniac

Total posts: 119
posted May 28, 2002 12:59 PM
I've never heard of anyone doing that so i really dont know what to tell you. But I use an 2" OFF SET wheel on my left rear and my right rear is 3" or 4" and i've never had anything break nor problems. Personally I'd go back to the stock position or however you all had it first and try a 2" offset wheel on your left rear......

Dirt Freak

Total posts: 248
posted May 28, 2002 01:25 PM
I've had a lot of people tell me not to lead the rearend at all. If you do, an inch is a ton. You're breakin stuff because you've led it way too much. I put a 1" shorter lower left trailing arm in a new car and put a stock one back on because I thought 1" was excessive. The housing was visibly **** -eyed.

In my opinion, leading the rearend is a crutch. It may make things better, but you would be better off to get the car to handle with weight, springs and wheel offsets and leave the 4 link straight and happy. Its not a very good racing set-up and complicating it by misaligning it can't help.

Dirt Freak

Total posts: 458
posted May 28, 2002 05:17 PM
in my opinion......bolting the rear housing in the chassis crooked is a crutch too...BUT, with the rules what they are at most tracks I would say this is acceptable practice........

with stock trailing arms and stock mounts this is what you will need to get close...
the lower trailing arm is closer to the you will need to move that mount farther..............

The street stock guys I help that do this I steer the rear 3/8 inch........I shorten the left side lower 3/8 I just slot the hole in the trailing arm near the rear end, then weld a grade 8 flat washer on.......

The upper trailing arm is soooo close to the center of the chassis the amount it will need to be changed is a lot less.......I move it 1/8 inch to 3/16.......same deal, weld on a flat washer.......

If you moved both trailing arms the same amount they will have a bind.......normally the rubber bushing will take up the bind, but the chassis will not handle correctly.

I would assume you are using a solid bushing, the bind it tearing things off the car............

As for tearing shocks need to cut off the lower mount and re-weld it at the proper angle..........again, the shock has a rubber bushing but it is not allowing the shock to move front to rear far enough..

Dirt Full Roller

Total posts: 29
posted May 28, 2002 05:39 PM
You might try going to a stiffer spring on the right rear. That is what we run and it helps the car turn. Also taking some spring split out of the front will make it turn easier.

Good Luck,

Dirt Freak

Total posts: 430
posted May 29, 2002 12:46 AM
I lead my rearend 3/4 inch and I like it better than straight up. I have never really had any problems out of the ordinary. I wouldn't think leading your rear would have much effect on rolling the tires off the rim.

Dirt Forum Racer

Total posts: 90
posted May 29, 2002 06:55 AM
As Awkwardjeff stated, unless you correct all your linkage points for the new angles for leading the rearend, you're going to stay in constant bind. As Dunbar stated, I also ran my rearend straight up and used offset wheels to make the chassis adjustments, coupled with tire pressure. Rolling tires off the rims? Well, if you're running to low of pressure w/o a beadlock on the RR, you're going to roll that tire off no matter how you set the rear suspension. Leading the rearend is not a bad thing, it's recommended for some 3-link chassis, etc. But, unless you make all the necessary adjustments, you might want to stick with keeping the rearend square and work with the balance of the components (shocks, springs, rims). It's basic, easy, and if you have a problem, you can always get help quick vs. a custom setup. Just my couple pennies.....

Dirt Full Roller

Total posts: 45
posted June 02, 2002 10:41 AM
We always pull the RR wheel back. That also gives you a better pinion angle.

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