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Author Topic:   4bar confusion
hoosier transplant
Dirt Maniac

Total posts: 104
posted March 12, 2005 07:40 AM  
I have asked this question before, but am still confused. I run a stock Monte frame with stock four bar rear. Steve Smith's "Street Stock Chassis Technology" book says to run the bar level but his "Stock Car Dirt Track Tech" book says to run 20 degree right and 15 degree left. I realize that the latter is actually connected to bird cages, but I am still confused as to which I should set mine at. I run a Super Stock(I stock in IMCA) and would really appreciate some help. I don't think any of you race in El Paso, TX so if you run a stock chassis and would rather PM me instead of giving out your "secrets" on here please do. I would like to get it set right the first time(that's funny, I don't care who you are) and then start tweaking for max setup. Thanks to everyone and have a great season. Donavon

racer17j
Dirt Forum Champ
Total posts: 5390
posted March 12, 2005 07:39 PM  
Buddy, run the stock set up for awhile, then after you get used to the track and car and explored tire pressures wheel offsets ride heights, you know the story, then get into "adjusting" your rear four link. Hint, don't be too worried about the lowers. The uppers CAN make a big difference. As always it depends on your track, car, driving style, rules,....what you will end up modifying or changing to get the car hooking up like yo want. I'll be around, so post or PM when you need to. I run a GM metric too and have "played" quite a bit with it. Race on.

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racin78p
if it ain't fun, then don't run

hoosier transplant
Dirt Maniac

Total posts: 104
posted March 14, 2005 02:31 PM  
What really concerns me is that at the angles of the uppers now, my rear end gets shorter on the right and longer on the left. That is backwards to what I need isn't it? I was playing around with the car and jacked up the left side, at the frame, trying to simulate what the rear suspension does in a turn(I know this is not totally correct, but thought it would give me some idea as to what is happening) and the car went to reverse steer. Suggestions????

racer17j
Dirt Forum Champ
Total posts: 5390
posted March 15, 2005 10:43 AM  
can't use a jack as a chassis dyno. whatever side you put a jack on is gonna get shorter becuaes that side is lifting and the other is not. you'll only get a coulpe inches of travel on the track so using a jack is extream in comparison. i realize you probably want everything perfect but your gonna think yourself into trouble before you even hit the track. like 78 said get it on the track see how it works then start to tune it everything works on paper but don't always work when the chit hits the fan. this is suposed to be fun don't make it work or it won't be fun anymore

    

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