Rear coil overs

slvrbullit · 12-17-2006, 09:04 AM

Well after a month of putting it off, I decided to install the rear coil overs last night. Took a total of about 2 hours. I had to remove mmy quad shocks because they looked as though they would rub on the new springs.

Here are some pics:

The last one just shows the emptiness with out a coil on the LCA.

Italian LX · 12-17-2006, 10:53 AM

EZ SPEED · 12-17-2006, 05:40 PM

Nice !

Craig K. · 12-18-2006, 07:08 AM

Looks good Tommy!!!

How does it compare before/after???

slvrbullit · 12-18-2006, 10:07 AM

it rides a lot different, havent been able to test the launch capabilites of it yet tho, guess we will see when I go to the track next probably after the first of the year.

CrazyInBlack · 12-18-2006, 08:14 PM

different being stiffer, softer, rough ......?

I have never ridden in a car with coil overs

QWKSNKE · 12-18-2006, 08:43 PM

Quote:

Originally Posted by CrazyInBlack

different being stiffer, softer, rough ......?

+1

How much adjustment range (stiffness) can you do on these?

slvrbullit · 12-19-2006, 07:06 AM

it all depends on the spring rate and height I guess. Up front I have 175#springs as for the back I dont remember the rate on them. I do know that I need new shocks and struts all around to get the full benefit from them I think.

As for the ride it is a little stiffer that the standard coil.

CrazyInBlack · 12-19-2006, 04:32 PM

but not dramatically worse?

Sendero · 12-19-2006, 08:30 PM

The beauty of coil-overs is their ease of adjustability. It looks as if these springs are of a standard size which means you can go from 150lb springs all the way to 700lb springs. If we are purely talking stock-to-stock spring rates it would take a 95lb coil-over spring to equal the wheel rate of a 210lb conventional spring. Don't forget that moving the spring mounting point changes the "moment arm" on which it acts. By moving the spring from its stock location further "away" from the LCA mounting point it affords the spring better control over the rear suspension.

The coil spring rate is only a part of the total "ride" equation. With coil-overs you can have a much larger wheel rate without sacrificing ride quality provided you have a set of struts and shocks valved to match the spring rates. Take my Cobra for example; stock I had 500lb front and 300lb conventional springs (estimated). When I installed my coil-overs (350lb front and 225lb rear) it was like I installed 1260lb front and 505lb rear conventional spring. But, because of the change in the "moment arm" and having a set of Bilsteins valved for my spring rates, my car is firm but not punishing. In fact, on the interstate my car rides as smooth as a Caddy (even though its loud). Over bumps, my car recovers fairly well without to much oscillation.

You create a rough ride by "too stiff" of a spring coupled with a lightly valved shock. When I installed 275lb rear coils, which I knew were greated than my rebound valving was rated for, my car bounced like Uncle Bucks.

12-17-2006, 09:04 AM	#1
slvrbullit Super Moderator Join Date: Dec 2004 Location: on the water Posts: 1,280	Rear coil overs Well after a month of putting it off, I decided to install the rear coil overs last night. Took a total of about 2 hours. I had to remove mmy quad shocks because they looked as though they would rub on the new springs. Here are some pics: The last one just shows the emptiness with out a coil on the LCA. __________________ 2012 Jeep Wrangler Unlimited--- too many mods to list, about to be sitting on 1 ton axles. 2000 Ford F-350 Dually Lariat LE Crew Cab Short Box 7.3 auto 168,000 miles

12-17-2006, 10:53 AM	#2
Italian LX Daddy x4 ...we're done Join Date: Dec 2004 Location: Oxford, AL Posts: 11,551	__________________ -Brian '86 Mustang GT Convertible '88 Mustang LX coupe '11 Odyssey TE '21 Insight Touring

12-18-2006, 07:08 AM	#4
Craig K. Nothing new here Join Date: Dec 2004 Location: Senoia, GA Posts: 2,990	Looks good Tommy!!! How does it compare before/after??? __________________ 1974 Triumph TR6 1985 Monte Carlo SS 1986 Mustang GT 2011 KIA Optima GTS

12-18-2006, 10:07 AM	#5
slvrbullit Super Moderator Join Date: Dec 2004 Location: on the water Posts: 1,280	it rides a lot different, havent been able to test the launch capabilites of it yet tho, guess we will see when I go to the track next probably after the first of the year. __________________ 2012 Jeep Wrangler Unlimited--- too many mods to list, about to be sitting on 1 ton axles. 2000 Ford F-350 Dually Lariat LE Crew Cab Short Box 7.3 auto 168,000 miles

12-18-2006, 08:14 PM	#6
CrazyInBlack Crusin... Join Date: Feb 2005 Location: Various Places in Middle AL Posts: 3,542	different being stiffer, softer, rough ......? I have never ridden in a car with coil overs __________________ Liberal education has nothing to do with liberal or conservative politics. Liberal education is the simple idea of a broad and well-rounded course of study in the humanities, social sciences, sciences, and the arts. The overarching goal is to liberate the mind from ignorance and superstition.

12-17-2006, 05:40 PM	#3
EZ SPEED Friends Join Date: Dec 2004 Location: Tempe Arizona Posts: 3,029	Nice !

12-19-2006, 07:06 AM	#8
slvrbullit Super Moderator Join Date: Dec 2004 Location: on the water Posts: 1,280	it all depends on the spring rate and height I guess. Up front I have 175#springs as for the back I dont remember the rate on them. I do know that I need new shocks and struts all around to get the full benefit from them I think. As for the ride it is a little stiffer that the standard coil. __________________ 2012 Jeep Wrangler Unlimited--- too many mods to list, about to be sitting on 1 ton axles. 2000 Ford F-350 Dually Lariat LE Crew Cab Short Box 7.3 auto 168,000 miles

12-19-2006, 04:32 PM	#9
CrazyInBlack Crusin... Join Date: Feb 2005 Location: Various Places in Middle AL Posts: 3,542	but not dramatically worse? __________________ Liberal education has nothing to do with liberal or conservative politics. Liberal education is the simple idea of a broad and well-rounded course of study in the humanities, social sciences, sciences, and the arts. The overarching goal is to liberate the mind from ignorance and superstition.

12-19-2006, 08:30 PM	#10
Sendero Im gonna show her my... Join Date: Dec 2004 Location: Somewhere providing FREE tech support. Posts: 4,269	The beauty of coil-overs is their ease of adjustability. It looks as if these springs are of a standard size which means you can go from 150lb springs all the way to 700lb springs. If we are purely talking stock-to-stock spring rates it would take a 95lb coil-over spring to equal the wheel rate of a 210lb conventional spring. Don't forget that moving the spring mounting point changes the "moment arm" on which it acts. By moving the spring from its stock location further "away" from the LCA mounting point it affords the spring better control over the rear suspension. The coil spring rate is only a part of the total "ride" equation. With coil-overs you can have a much larger wheel rate without sacrificing ride quality provided you have a set of struts and shocks valved to match the spring rates. Take my Cobra for example; stock I had 500lb front and 300lb conventional springs (estimated). When I installed my coil-overs (350lb front and 225lb rear) it was like I installed 1260lb front and 505lb rear conventional spring. But, because of the change in the "moment arm" and having a set of Bilsteins valved for my spring rates, my car is firm but not punishing. In fact, on the interstate my car rides as smooth as a Caddy (even though its loud). Over bumps, my car recovers fairly well without to much oscillation. You create a rough ride by "too stiff" of a spring coupled with a lightly valved shock. When I installed 275lb rear coils, which I knew were greated than my rebound valving was rated for, my car bounced like Uncle Bucks. __________________ I heard it on the internet, so it must be true. "I believe that a person's moral compass can be determined by how he references free men the right to defend themselves." T. Nugent "An armed society is a polite society. Manners are good when one may have to back up his acts with his life." R. Heinlein "Never argue with an idiot. They drag you down to their level, then beat you with experience." -Unknown