Replacement KW Spring URGENT

[truegearhead]

KW confirmed all spring options are 30 days+ out so that's not an option. Tarret can over night me Swift springs which are 60mm in diameter (1mm under KWs) and are available in 450lbs and 500lbs (they may be able to get other rates I'll know tomorrow). I'm not sure what length will work with KWs and I'm not sure if KW shocks will handle that rate (I doubt it). The KW front rates are published simply as progressive but the rears are only 285lbs! What do you guys think? The car is under 2500lbs so the 450/500 rate is probably too stiff anyways. Think I would be safe with a 350lb spring? What would you go with? Any ideas what length I should get? If the car weren't in a shop an hour away getting a roll bar installed I'd go measure.

Cheers,

[rastta]

Originally Posted by truegearhead

KW confirmed all spring options are 30 days+ out so that's not an option. Tarret can over night me Swift springs which are 60mm in diameter (1mm under KWs) and are available in 450lbs and 500lbs (they may be able to get other rates I'll know tomorrow). I'm not sure what length will work with KWs and I'm not sure if KW shocks will handle that rate (I doubt it). The KW front rates are published simply as progressive but the rears are only 285lbs! What do you guys think? The car is under 2500lbs so the 450/500 rate is probably too stiff anyways. Think I would be safe with a 350lb spring? What would you go with? Any ideas what length I should get? If the car weren't in a shop an hour away getting a roll bar installed I'd go measure.

Cheers,

Spec guys run PSS9's with similar weight springs so I'm sure the KW's can handle it - as they are adjustable. As for spring length - you'll have to measure but I'd say a 7-8" spring would probably be enough if you weren't doing a tender spring. The H&R coilovers use a 160mm spring in the front with a tender spring.

[truegearhead]

UPDATE (3 days until VIR): The member who sold me the coilovers agreed to pay for the replacement springs! Awesome guy, you've got to love this community. KW proved not be much help and couldn't give me spring rates, or spring lengths but I took a guess and ordered a set of Swift springs from Tarret. They're rushing me out two that'll be here by Thursday evening, this is getting tight. I also just got a call from the cage shop that is having a problem with fuel lines that close to weld points so I'm stopping in there tomorrow to try and find a solution. With any luck this will all come together, looks like I'll be changing springs and aligning he car at the track Friday night.

I do have one new wrinkle I'll have to work out, I normally run on slicks and have some autocross 200 tread wear street tires with but they're a little low. It's supposed to dump rain Sunday so oddly...I might bring wheels with winter tires on them. I'm heard their soft compound and deep tread actually work well at speed in standing water. Seems crazy but I might give it a shot of it gets bad. Here's an interesting Road and Track article I'm drawing the idea from.

https://www.google.com/amp/www.roadandtrack.com/new-cars/videos/amp5604/winter-tires-track-tested/

[truegearhead]

(Update 2 days left). The bar is in!