I want the stiffest Rear Springs Possiable. Whats your suggestions - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 10 Old 06-05-2011, 01:43 PM Thread Starter
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I want the stiffest Rear Springs Possiable. Whats your suggestions

This is strickly an opion thread.

Whats the stiffest rear Spring out for the 79-93 Mustangs.

Currently running an Eilbach Pro Kit Spring mounted on Maxium Motorsports Wieght Jacker Control arm, Running Strange 10 way adjustable Struts.

Im not looking at any events just mainly street cruising in and around my area.

Not looking for anytype of ride quailty just want it low and stiff.

81 Mustang LX Coupe


1987 Sand Beige Coupe 1 or 47 LX somewhere
1981 T-Top Coupe..blew up so went back to the basics
2005 Mustang GT Convertible. ..Few bolt ons
1998 SVT Contour dd
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post #2 of 10 Old 06-05-2011, 03:21 PM
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You'd kill those Strange's with probably anything stiffer than those weak ass Pro-Kit's. And during the killing process, it'll ride like a mule-drawn wood wagon.

I just don't see the purpose.

You'd probably have better luck from a swaybar upgrade.

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post #3 of 10 Old 06-05-2011, 04:36 PM
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IMHO, go with a Mach1 rear 250, or something like an HR Super Race 260-300.
*I* don't like any of the Eibach springs. I think they are all to low and too soft to be good for anything. Your rear springs are typical Eibach springs, a huge drop, but without the required increase in spring rate.


Note, the drops are approximate values
Coil Spring Tech

You also have to be careful when comparing progress rate springs. Some may not get to their higher rating until mostly compressed. And, with stuff like Eibach, I doubt they even get to the rates they say until nearly in full bind. It costs less to make the higher spring rates happen at more compression (less windings & spring/material). Eibach is all about cost and selling to people that don't know about the specialty companies for their vehicles.


If you want to lower your car for looks, that's your choice.
I mentioned the above because it's also relevant to handling. IMHO, MM rear adjustable LCAs are a requirement to help tune the rear suspension height/rates.


BTW: As nice as coil overs are, *I* think they have no place at all on a mostly street Stang (like mine). MY Stang is my daily driver in warm weather and it has to deal with the MEGA POS New England roads. My Stang is ~25 years old. And, I plan on keeping it many more years! Part of that means not having the towers ripped the ***** out of by running coil-overs over POS streets.

So, it all depends on the exact desire/purpose of the mods and the use of the car. It varies for each person.

Hey, you wanted opinions. That's my two cents.
Good Luck!

Joe - 86 Mustang GT with ABS!
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M-2300K brakes, Mach1 Springs, D178 rims, and 245/45/17 RE730 tires. Car Pictures: http://www.veryuseful.com/mustang/tech/misc/Mustang1986_with_Mach1_springs/

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post #4 of 10 Old 06-05-2011, 04:40 PM
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BTW, I agree that the Strange shocks in back don't have enough damping for higher rate springs. Go with an adjustable Tok, Koni, or Bilstein.

Joe - 86 Mustang GT with ABS!
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M-2300K brakes, Mach1 Springs, D178 rims, and 245/45/17 RE730 tires. Car Pictures: http://www.veryuseful.com/mustang/tech/misc/Mustang1986_with_Mach1_springs/
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post #5 of 10 Old 06-07-2011, 11:22 PM
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Good luck with stiff springs and the current shocks you have now. But i guess thats besides the point. Look at MM TA springs 415-515.
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post #6 of 10 Old 06-08-2011, 07:44 AM
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Quote:
Originally Posted by 91svtcoupe View Post
Im not looking at any events just mainly street cruising in and around my area.

Not looking for anytype of ride quailty just want it low and stiff.
Stiffening just the rear by any considerable amount is not a very good idea, as it tends to let the tail get loose on you even in street driving. You may (or may not) be able (or always willing) to limit your driving to "just cruising", and in any event you can't control the weather.

Long way of telling you to plan on stiffening the front as well. Before you get caught off guard.


Norm

Mine: '08 GT, 5MT, black/light graphite, un-Fstock (DD, occasional track day)
Wife's: '10 Legacy 2.5GT (DD, six-speed manual)
Spare:'01 20AE Maxima, 5MT (also my bad weather alternate)
Various Loose Parts: '79 Malibu
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post #7 of 10 Old 06-08-2011, 01:24 PM Thread Starter
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Quote:
Originally Posted by Norm Peterson View Post
Stiffening just the rear by any considerable amount is not a very good idea, as it tends to let the tail get loose on you even in street driving. You may (or may not) be able (or always willing) to limit your driving to "just cruising", and in any event you can't control the weather.

Long way of telling you to plan on stiffening the front as well. Before you get caught off guard.


Norm
Front is ridding on 375lb 8" Coil springs very stiff....


right now looking at getting some H & R Race Springs and some Blistien Shocks

1987 Sand Beige Coupe 1 or 47 LX somewhere
1981 T-Top Coupe..blew up so went back to the basics
2005 Mustang GT Convertible. ..Few bolt ons
1998 SVT Contour dd
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post #8 of 10 Old 06-08-2011, 09:09 PM
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I'm running the H&R Super Race rear conventionals with the MM height adjustable LCAs and Bilstein HDs. I'm also running a PM3L with MM PHB. Current ride height in the rear is 25-5/8" ground to lip with 245/45/17s. Ride quality isn't bad and with the PM3L and MM PHB, the rear articulates better than ever.
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post #9 of 10 Old 06-08-2011, 10:55 PM Thread Starter
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Originally Posted by qtrracer View Post
I'm running the H&R Super Race rear conventionals with the MM height adjustable LCAs and Bilstein HDs. I'm also running a PM3L with MM PHB. Current ride height in the rear is 25-5/8" ground to lip with 245/45/17s. Ride quality isn't bad and with the PM3L and MM PHB, the rear articulates better than ever.
Thanks Im looking now for the Bisteins...I got the H R Springs

1987 Sand Beige Coupe 1 or 47 LX somewhere
1981 T-Top Coupe..blew up so went back to the basics
2005 Mustang GT Convertible. ..Few bolt ons
1998 SVT Contour dd
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post #10 of 10 Old 06-13-2011, 01:40 PM
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Originally Posted by stangPlus2Birds View Post
... and it has to deal with the MEGA POS New England roads.
Off topic, but I love that everyone in the US is convinced they drive on the ####tiest roads in the country. That's not a jab at you, Joe, just a general observation based on reading a number of automotive forums. Nobody ever posts something like, "I'm running 500# coilovers, but that's because Ohio has the best roads in the country. If you live somewhere else, you'll have to run softer springs." Having been stationed in CT, RI, VA, WA, HI, FL and NY over the years, I think in actuality all the roads are about the same. In a given area, there are some roads that are crap, but some (most) that are just fine.

Quote:
Originally Posted by stangPlus2Birds View Post
Part of that means not having the towers ripped the ***** out of by running coil-overs over POS streets.
You would be the first example I've ever seen of strut tower failure due to coil-overs, particularly on a street car.

As for the original question, the H&R torque arm springs from Max Motorsports are the stiffest conventional springs I've seen.


'89 GT convertible, N/A 357W, MM front susp w/425# coil-overs and Koni D/As, MM TA/PB rear setup (Koni Yellows, 390-430# springs), Stoptech 332mm / 12" Baers, MM 6 point rollbar, Maier 1.5" flared fenders & quarters, 18x9.5" front/18x10.5" rear Enkei RPF-1s (street), 18x10" CCW C-10s (track), etc...

Last edited by Patrick Olsen; 06-13-2011 at 01:53 PM.
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