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View Full Version : Spare 03/04 Springs?


Bartman01
11-30-2007, 05:21 PM
Anyone have their '03/'04 hard top stock springs lying around and are willing to part with them?

John Himsel
11-30-2007, 11:56 PM
In about 6 weeks I will have a set of H&R Sport Springs available.....going coil over and won't need them.

03 cobra toy
12-01-2007, 10:41 AM
Maybe see if you can get your hands on some 00R springs...

Stay away from progressive rate springs ;) They suck on the track....

Levi
12-01-2007, 12:43 PM
Maybe see if you can get your hands on some 00R springs...

Mr. Track Dawg, that is a great idea.................... :thumbsup:

Bartman01
12-01-2007, 10:26 PM
Maybe see if you can get your hands on some 00R springs...

Stay away from progressive rate springs ;) They suck on the track....

Do you know if either of the Eibach pro springs that MM sells (one part # for 99/01 anothe for 03/04) are the ones from the 00R? It's annoying that none of the springs actually list the rates on their site. Guess they just want people to have to call about them.

Firme
12-01-2007, 11:48 PM
Do you know if either of the Eibach pro springs that MM sells (one part # for 99/01 anothe for 03/04) are the ones from the 00R? It's annoying that none of the springs actually list the rates on their site. Guess they just want people to have to call about them.

No, Eibach's pro kit is their progressive rate springs, I believe 425-530 progressive rate. These are obviously not the Eibach race springs off the R. The Pro-Kit are more of a drop for looks, slightly better feel springs, but no where near what you need for the track. I don't think you can get the 00R springs new, only used from someone who upgraded to coil-overs. If you don't want to buy used 03/04 (600lb rate springs) or 00R spring (800lb front, 750lb rear), I would strongly suggest H&R's for conventional springs. The sports are good, or for better track performance, the race springs. 00R springs are still more desirable.

Bartman01
12-02-2007, 02:34 AM
Looking for info on springs is very frustrating. Looks like I either see progressive spring kits that just specify how much they drop your car (and don't discuss spring rates), or I see linear springs that specify the spring rate but give no indication of what vehicles they go with (just length/od). Anyone know off the top of their head what the length/outside diameter of the Cobra front/rear springs are?

Firme
12-02-2007, 10:36 AM
Looking for info on springs is very frustrating. Looks like I either see progressive spring kits that just specify how much they drop your car (and don't discuss spring rates), or I see linear springs that specify the spring rate but give no indication of what vehicles they go with (just length/od). Anyone know off the top of their head what the length/outside diameter of the Cobra front/rear springs are?


I have my stocker springs tucked away somewhere, I can take a look. It might be a couple of days though.

You just described just one of the reasons why coil-overs are superior. :D Seriously though I used to have the rates for H&R somewhere. Also, I have a set of H&R rear Race springs laying around that you can take a look at and inspect. Btw, those are for sale. ;)

Bartman01
12-02-2007, 03:48 PM
I used to have the rates for H&R somewhere.

http://www.miracerros.com/mustang/springs_calcs.htm
http://www.stangsuspension.com/store/springratesarticle.asp

Looks like the HR Race are:
F: 750-850 Progressive
R: 770 Linear

VS 00R:
F: 800 Linear
R: 750 Linear

Given that Linear > Progressive for the track and I if can't source the 00R front springs (or a replacement from Eibach) would the 750-850 progressive be too much of a compromise?

I am replacing my struts/shocks with some slightly used 00R valved Bilsteins and trying to find the best springs currently avaialble to mate them with. My car budget is going in to tires and the rear end for now, just looking to make a moderately priced improvement to the suspension itself at the moment. If I decide to keep the car long term (that decision is still at least 1-2 years away) then I will go the full coil-over path then.

03 cobra toy
12-02-2007, 08:30 PM
Looks like the HR Race are:
F: 750-850 Progressive
R: 770 Linear

VS 00R:
F: 800 Linear
R: 750 Linear

Given that Linear > Progressive for the track and I if can't source the 00R front springs (or a replacement from Eibach) would the 750-850 progressive be too much of a compromise?



I think that would be a good spring compromise...

Also put on your list some front lower control arm bushing...

http://www.globalwest.net/mustang%2079-98.htm#Front%20lower%20control%20arm%20bushing%20kits

jimmysidecarr
12-02-2007, 10:13 PM
I think that would be a good spring compromise...

Also put on your list some front lower control arm bushing...

http://www.globalwest.net/mustang%2079-98.htm#Front%20lower%20control%20arm%20bushing%20kits

I totally agree.

Those Global West bushings are a nice improvement at a nice price... Hmmm... :p (Nope... I need to cool the spending for a while :rolleyes: )

A possible and also desirable improvement though, would be some take off 03/04 lower arms IF they were available at a good price..

These are the new ones from Ford racing.. If you like I can look up a 10 over cost price for you.. Monday.

http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=6313

Also... while we are helping to separate you from your money.. :D
I felt the MM solid rack bushings combined with their caster camber plates and 4 point K brace made a huge improvement in feel and turn in.

AND they would be logical mods to do if you are paying someone to do the install or doing it yourself.
..

Admiral
12-03-2007, 07:48 AM
Stock Spring Rates
Model/Year Front Spring Rate (lb/in) Rear Spring Rate (lb/in)
Mustang GT/V6 Coupe 1994-2004 450 (linear) 210 (linear, solid axle)
Mustang GT/V6 Vert. 1994-2004 400 (linear) 185 (linear, solid axle)
Mustang Cobra Coupe 1999-2001 500 (linear) 475 (linear, IRS)
Mustang Cobra Coupe 2003-2004 600 (linear) 600 (linear, IRS)
Mustang Cobra Vert. 2003-2004 500 (linear) 470 (linear, IRS)
Mustang Mach1 Coupe 2003-2004 600 (linear) 250 (linear, solid axle)
Mustang Bullitt Coupe 2001-20022 600 (linear) 250 (linear, solid axle)

Aftermarket Spring Rates
Manufacturer/Part Info Front Spring Rate (lb/in) Rear Spring Rate (lb/in)
Ford Racing B Springs (M5300B) 425-530 (progressive) 200-300 (progressive, solid axle)
Ford Racing C Springs (M5300C) 650 (linear) 200-300 (progressive, solid axle)
Ford Racing F Springs (M5300F) 460-570 (progressive) 170-310 (progressive, solid axle)
Ford Racing G Springs (M5300G) 500-570 (progressive) 170-310 (progressive, solid axle)
Eibach Pro-Kit Springs (94-04 Mustangs) 425-530 (progressive) 200-300 (progressive, solid axle)
Eibach Sportline Springs (79-04 Mustangs) 425-630 (progressive) 140-295 (progressive, solid axle)
H&R Sport Springs (94-04 Mustangs) 490-575 (progressive) 205-250 (progressive, solid axle)
H&R Sport Springs (99-04 Cobra) 700-760 (progressive) 685 (linear, IRS)
H&R Super Sport Springs (94-04 Mustangs) 700-760 (progressive) 275-300 (progressive, solid axle)
H&R Race Springs (79-04 Mustangs) 750-850 (progressive) 260-280 (progressive, solid axle)
H&R Race Springs (99-04 Cobra) 750-850 (progressive) 770 (linear, IRS)
Steeda Sport Springs (79-04 Mustangs) 650 (linear) 200-250 (progressive, solid axle)
Steeda Sport Springs (03-04 Cobra) 720-780 (progressive) 650-790 (progressive, IRS)
Steeda Competition Springs (79-04 Mustangs) 750-850 (progressive) 250 (linear, solid axle)
StangSuspension Springs (94-04 Mustangs) 490-575 (progressive) 205-250 (progressive, solid axle)

Got this info here: http://www.stangsuspension.com/store/springratesarticle.asp

cobrapace94
12-03-2007, 06:23 PM
Stock 01 vert spring measurments:
Front: 5" diameter X 13 3/4" length
Rears: 5.5" diameter X 13 3/4" length

spitfire
12-05-2007, 08:42 AM
I would be glad to give you my old springs, they only have a few miles on them. The only bad part is I am working in Venezuela, and don't know when I will be coming home. Let me know if you want to wait for them, and I will contact you when I get home. :thumbsup: