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I'm new to suspension, but gonna upgrade within the next couple months and I wanted to do some research on it ... I figure the people that know best are the autox people.

anyway, I'm lookin for a moderate front spring setup and a very stuff rear setup ... basically, looking for a good drag setup ...

I thought about tein ss's, but they seem a little soft ... thinkin about tein flex, but then that's all I know because I can't find any spring rates for coilovers.

I remember one of the autox heads was using JIC magic's coilovers ... how was that?

how would I compare one spring rate that is (example) 10 kg to another springrate that is 559 pounds/inch ?

 
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I beleive most coilovers are available with CUSTOM spring rates. I too would like to know how to compare / convert say 10kg/mm to 540lbs/inch ??

 
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For drag racing, Damper rates are more important then spring rates. Simply because Spring rates dont effect how much weight gets transfered when you launch the car. Spring rates do effect how much the car dives and squats, but the same amount of weight is being transfered wether your running 600 LB/in springs or 1000 LB/in springs. Dampers however can control how fast weight gets transfered aroundth chassis.. so you can tune them to slow the weight transfer process when you are launching the car... Remember for tires, Weight = Traction. So you want the weight to remain on the front end as long as possible for best traction...

Heres Konis Drag racing Setup its for RWD, but you get the idea.... with a little test N Tune you could adapt it for FWD.

 
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huh? ... so heavy tires = traction? ... or weight of the car on the tires = traction?

 
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Weight applied to the tires contact patch from the weight of the car. The more weight on a tires contact patch the more traction it will make.

 
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1 lb/in=.017854 kg/mm

Spring rates for coils are listed on their websites. Flex is going to be really stiff as they have over 600lbs spring rates. That is way too much. I find 450/500 stiff on my JICs. You can ask for any custom rate you want.

 
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Buy my JICs next week... 400 front, 560 rear (I re-rated them for more rear bias).
If the tires are sticky enough, they'll grab.

 
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can you give an honest opinion that that will be an exception setup for drag?

 
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They'll be good.... Just dont lift mid turn

You'll have your stiff spring rate, and a good damper.

 
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No they are good for road racing. Not so much for autox or the street but great for road courses.

 
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hmm ... I'm looking for a good set of suspension that will be exceptional for drag ...

I'm a fresh newb with suspension ... so far, I've gathered that I need stiff rear shocks and springs with a coilover ... fronts I guess mediocre.

jic's seem like they fit the description ... as well as tein flex

 
Rep Power: 380

Actually, if I understand weight transfer and shock dampering... For FWD, you'd probably want a damper that is low in bump valving on the rear, and one that is stiff in rebound dampering on the nose. But I could be wrong, I've never tryed to set my car up for drag racing. To me it would appear that launching a car for drag racing would be similar to trying to tune out Excessive corner exit understeer (with dampers) which is done by either increasing Front rebound and/or decreasing rear bump...

Heres a good article on using dampers to adjust hanling... and to me Launching a car would be the same as having excessive Phase 4 understeer (making it nessisary to tune the dampers to try and cause oversteer)

http://www.smithees-racetech.com.au/...hocktune1.html

 
Rep Power: 424

Set the shocks full soft on the front, almost full hard on the rear, don't abruptly come out ouf the gas. At higher speeds, they do an excellent job of keeping the car pinned down. At some lower speeds on washboard surfaces, the shocks sometimes have a tendency to work too fast.

 
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hmm ... in that case, how much shipped to 92656?

 
Rep Power: 380

High emphasis on this... especially if you are turning or making Course corrections on the strip. Though it is a great way to make the car spin. and if you do encounter a bit of oversteer... Get back on the gas and countersteer. Lifting or hitting the brakes in an oversteering FWD car will just make the oversteer worse.

 
Rep Power: 424

Lemme figure something out and get back to you next week..... they're coming out of the car on friday.