Coil-over spring rates

[dville_gt]

Wheel rate on a strut mustang is NOT 1:1 for spring rate. that 1800 lbs you are talking about is more like 2100 lbs. I think the front wheel rate ratio is like .85 but could be even lower. Pull a fender and drop the car on the ground to see the spring behind the wheel. I got $5 that says it's fully compressed. That's an awfully light spring with a boat anchor on the nose with turbo parts added in for ballast. Whatever you do, don't drive it or you are going to bust up a caster/camber plate or strut tower.

The picture above is with the car on the ground.

[dville_gt]

I won't be home until friday night but I believe I have some 14" 225 springs and some 12" 300?lb. you can have.

If you are serious I will come by Friday night for sure! Either set of those should be a lot better.

[Grape]

and......here comes the shock technology lol. 2 pro stock teams have been running penske inerters on the rear since '04ish. this regressive rebound deal in the front will be what all drag cars should have on them.

http://www.penskeshocks.com/files/WEB%20TECH%20_NASCAR_%2005-12-2010.pdf

[aggie97]

Springs are cheap, I'd be looking for some 200's at least.

My car has 150's or 175's (can't remember) and it's not near enough.

I was talking to Wolfe a while back, I'm thinking he had something like 500's in the front!

Also, something to think about, if you run a 12" spring, you'll get the spanner nut higher up and potentially keep some of that wear off of the coil over tube.

I run 450 and 475's on my road race car and want to go stiffer....but those struts he has could not dampen that high rate a spring unless he has had them revalved significantly.

[aggie97]

Wheel rate on a strut mustang is NOT 1:1 for spring rate. that 1800 lbs you are talking about is more like 2100 lbs. I think the front wheel rate ratio is like .85 but could be even lower. Pull a fender and drop the car on the ground to see the spring behind the wheel. I got $5 that says it's fully compressed. That's an awfully light spring with a boat anchor on the nose with turbo parts added in for ballast. Whatever you do, don't drive it or you are going to bust up a caster/camber plate or strut tower.

[Magnimike1]

I won't be home until friday night but I believe I have some 14" 225 springs and some 12" 300?lb. you can have.

[junk racing]

smileys in mesquite should have any flavor you need 972 289 7223

[sdun]

Where are you located? I think that I have a pair of 220lb 12 inch in storage. They were on the car just to move it around the shop.

[naynay]

im just babbling but i had 600/750 lb spring on an auto X e30.. i dont think you'll hurt yourself going up, especially since you still drive it on the street

[turbostang]

Any place local to get them. Called Wolfe and they highest they have is a 170 14". Would like to go race this weekend.

not that I know of.. maybe call around, speektek, gearheads, TS etc..

[dville_gt]

Springs are cheap, I'd be looking for some 200's at least.

My car has 150's or 175's (can't remember) and it's not near enough.

I was talking to Wolfe a while back, I'm thinking he had something like 500's in the front!

Also, something to think about, if you run a 12" spring, you'll get the spanner nut higher up and potentially keep some of that wear off of the coil over tube.

Any place local to get them. Called Wolfe and they highest they have is a 170 14". Would like to go race this weekend.

[turbostang]

Springs are cheap, I'd be looking for some 200's at least.

My car has 150's or 175's (can't remember) and it's not near enough.

I was talking to Wolfe a while back, I'm thinking he had something like 500's in the front!

Also, something to think about, if you run a 12" spring, you'll get the spanner nut higher up and potentially keep some of that wear off of the coil over tube.

[fastwhite99gt]

I have 12" 200lb on my Stang, but its an aluminum block in it now. I'd look at 12" 300lb springs for an iron block with a turbo setup up front. The 12" springs don't bow near as bad and the higher rate will keep it from coil binding.

[Grape]

Can you think of any other reason the front end would be rock hard like that. Shock is working, control arm move freely, ball joint feels good. I don't think the spring is actually touching coil to coil, but to my (inexperienced) eyes they look very compressed.

150 pound spring on a 3000 pound car with 60% nose weight is going to blow right through that spring. www.purplespring.com we can get you hooked up with these guys.

[dville_gt]

well you gotta use your eyeballs at ride height and see if they are binding, we put tape on the tops of the coils to see how hard we are coilbinding. i thought that first picture was a ride height.

Can you think of any other reason the front end would be rock hard like that. Shock is working, control arm move freely, ball joint feels good. I don't think the spring is actually touching coil to coil, but to my (inexperienced) eyes they look very compressed.