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Coilover and Leaf Spring question ???

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Old Jun 18, 2012 | 05:44 PM
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Default Coilover and Leaf Spring question ???

I am seriously considering coilovers. I noticed in some writeups that some remove their leafs springs and some don't. What are the pros and cons of removing or not removing the leaf springs?

Also what is a good spring rate for primarily street use?

Thanks

Last edited by meflyfrc; Jun 18, 2012 at 06:29 PM. Reason: sp
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Old Jun 18, 2012 | 06:11 PM
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Unless I'm misunderstanding your statement?

I haven't heard of any one keeping their leafs & also adding c/overs.
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Old Jun 18, 2012 | 06:15 PM
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Only if you wanted it to ride like a buckboard.

I don't know the specifics on the stock springs, but with the addition of coil overs it would give you a spring rate in the 1300 to 1500 pound per inch.
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Old Jun 18, 2012 | 06:19 PM
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Originally Posted by bumble-z
Unless I'm misunderstanding your statement?

I haven't heard of any one keeping their leafs & also adding c/overs.
Originally Posted by Silverback51
Only if you wanted it to ride like a buckboard.

I don't know the specifics on the stock springs, but with the addition of coil overs it would give you a spring rate in the 1300 to 1500 pound per inch.
That's what I thought. Maybe a couple of the writeups just omitted the part about removing the springs and assumed you know to remove them. Thanks again
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Old Jun 18, 2012 | 06:24 PM
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Originally Posted by meflyfrc
That's what I thought. Maybe a couple of the writeups just omitted the part about removing the springs and assumed you know to remove them. Thanks again
To be sure.
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Old Jun 18, 2012 | 10:33 PM
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Originally Posted by Silverback51
Only if you wanted it to ride like a buckboard.

I don't know the specifics on the stock springs, but with the addition of coil overs it would give you a spring rate in the 1300 to 1500 pound per inch.
To the OP you remove the springs on all known coilovers except for ONE set and for the moment I cant remember the name of that one brand now. But you will get paper work on all coilovers from the 1st step to the last on what to do and what you do and dont remove. Robert
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Old Jun 18, 2012 | 10:56 PM
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I just installed a set of the Pfadt Featherlites on mine 2 weeks ago. The springs come off per the instructions that came with the coil overs. I believe they come off regardless of brand but I could be wrong.

Couple pics of mine after the install, also added C6Z06 sways with poly bushings.




Last edited by Grim Reaper; Jun 19, 2012 at 12:03 PM.
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Old Jun 19, 2012 | 11:38 AM
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As mentioned by the posters above, most coilover manufacturers eliminate the factory leaf springs. Removing the leafs is one of the main advantages of running a coilover setup. There is one variant of the Callaway/Eibach coilovers which ran a really light coil spring and was designed to be used in conjunction with the factory leaf, but the system is tricky to tune properly.

You can take a look at our instruction sheet to see what's invoved with a FeatherLight Generation Single installation. You do remove the leaf springs, but it's very straight forward. There is no other fabrication, grilling or cutting necessary. Unplug your factory shocks and leaf springs, plug in the new FeatherLights, set your ride height, get the car aligned and away you go!

Pfadt Race Engineering FeatherLight Generation Single Adjustable Coilover Installation Instructions.

Last edited by Pfadt Racing; Jun 19, 2012 at 11:44 AM.
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Old Jun 19, 2012 | 11:53 AM
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I have to admit Pfadt's newly designed inverted, Feather lights are of great design & are so much heavier duty than their older design.

The ease of setting the ride height & shock adjustments are now so simple.

No more knuckle busting, (2) spanner wrenches & shock adjustments are now at the bottom of the shocks instead of the top.

Here is a picture of a front Featherlight, prior of install.

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Old Jun 19, 2012 | 12:11 PM
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I am running the older PFADT Coilovers and LOVE EM!! Pitch the leaf springs brother... Slam that already sweet looking C5Z!
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Old Jun 19, 2012 | 05:06 PM
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Karma is good, the Pfadt featherlights is what I've been checking out.

Thanks
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Old Jun 19, 2012 | 07:32 PM
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The Pfadts are the number one mod I have EVER made to my C5. Just do it. Absolutely no regrets
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Old Jun 19, 2012 | 11:18 PM
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Originally Posted by Pfadt Racing
As mentioned by the posters above, most coilover manufacturers eliminate the factory leaf springs. Removing the leafs is one of the main advantages of running a coilover setup. There is one variant of the Callaway/Eibach coilovers which ran a really light coil spring and was designed to be used in conjunction with the factory leaf, but the system is tricky to tune properly.

You can take a look at our instruction sheet to see what's invoved with a FeatherLight Generation Single installation. You do remove the leaf springs, but it's very straight forward. There is no other fabrication, grilling or cutting necessary. Unplug your factory shocks and leaf springs, plug in the new FeatherLights, set your ride height, get the car aligned and away you go!

Pfadt Race Engineering FeatherLight Generation Single Adjustable Coilover Installation Instructions.
Best coilovers that I have had on my car for sure. PFADT all the way have a ton of the parts under my car. Robert
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Old Jun 20, 2012 | 02:58 AM
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I think the Eibach Callaway kit retains the stock leaf spring.
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Old Jun 22, 2012 | 03:08 PM
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Picked these up today

Gonna be a couple weeks before I put them on.
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Old Jun 22, 2012 | 04:19 PM
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Originally Posted by meflyfrc
Picked these up today

Gonna be a couple weeks before I put them on.
Looking good!

You're going to love them!
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