EATON Detroit Spring

The leading manufacturer of leaf and coil springs for the street rod and restoration industries

We Help Maintain American Icons by Manufacturing Leaf and Coil Springs Right Here in America

Phone: 1 (313) 963-3839
Fax: 1 (313) 963-7047

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      We have been manufacturing springs for American vehicles for over 80 years. Our process and expertise has been continuously refined and improved over the century and our Spring Tech section reflects some of that specialty knowledge.

      Browse our many articles, watch videos produced in partnership with AutoRestoMod, and learn all about your spring suspension here.

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  • Click to Call Now: 1 (313) 963-3839
MENUMENU
  • Home
  • Products
    • Suspension Parts
      • Leaf Springs
      • Coil Springs
      • Shocks
      • Attaching Parts And Hardware
      • Installation Kits
      • Leaf Spring Shackle Replacement Kits & Parts
    • Street Rod Suspension Parts
      • Mustang II Front End Springs
      • 48 Inch Truck Springs
    • Allstate - Chrysler
      • Allstate
      • American Motors
      • Bricklin
      • Buick
      • Cadillac
      • Chevrolet
      • Chevrolet Truck
      • Chrysler
    • Daimler - Ford
      • Daimler
      • DeSoto
      • Dodge
      • Dodge Truck
      • Edsel
      • Ford
      • Ford Truck
    • GMC - Jeep
      • GMC
      • Honda
      • Hudson
      • Hudson Truck
      • Hummer
      • International
      • Jeep
    • Kaiser Darrin - Nissan
      • Kaiser Darrin
      • Kaiser-Frazer
      • LaSalle
      • Lincoln
      • MAHINDRA
      • Mercury
      • MG
      • Nash
      • Nissan
    • Oldsmobile - Rambler
      • Oldsmobile
      • Plymouth
      • Plymouth Truck
      • Pontiac
      • Rambler
    • Sterling - Willys
      • Sterling
      • Studebaker
      • Studebaker Truck
      • Toyota
      • Willys
    • Request A Custom Quote
    • Search For Parts Here
  • Spring Tech
    • Learn About Leaf & Coil Springs
      • Spring Tech Articles
      • Tech Questions
      • Spring Tech Videos
      • Featured Elsewhere
      • EATON Detroit Spring Podcast
      • Buy Ford Manuals
    • Spring Tech 101

      We have been manufacturing springs for American vehicles for over 80 years. Our process and expertise has been continuously refined and improved over the century and our Spring Tech section reflects some of that specialty knowledge.

      Browse our many articles, watch videos produced in partnership with AutoRestoMod, and learn all about your spring suspension here.

    • Browse By Topic
      • Leaf Springs
      • Coil Springs
      • Attaching Parts
      • Ride Height & Stance
      • Ride Quality
      • Manufacturing Springs
      • Replacing Springs
      • Modifying Springs
      • Ordering Springs
  • About Us
    • About EATON Detroit Spring
    • Customer Showcase
    • Send Us Photos Of Your Ride!
    • Free Stuff For Car Shows!
    • Facebook
    • YouTube Channel
      • Spring Tech Videos
  • Order Here
    • Lookup & Purchase Your Vehicle's Parts
    • Request A Quote
    • Email Our Sales Team
    • Dealer Information
  • Find Parts That Fit Your Vehicle
  • Click to Call Now: 1 (313) 963-3839

How Much And When Do Coil Springs Settle? (Also, How To Choose The Right Mustang II Springs)

Q -Mike,

I have just finished my second Mustang II front suspension installation and once again am unhappy with the springs supplied with the kit.

I think the rate is way too high for my application (1951 Ford Pickup w/GM small block). The supplier says “give it time, the springs will settle.”

My question is how much can one expect the springs to settle or sag after installation?

I need about 3 Inches of drop to get the lower suspension A arms level with the ground.

On my first project car, I cut the coils and it sat right until a few months later when the springs settled and then it was too low. If I am going to have to remove the springs on my current project for cutting, I’d rather order a new set with the right spring rate and loaded height.

I just want to make sure I get the right springs this time, and hopefully get a smoother ride too.

– Warren

A – Warren,

1st thing I need to know: is the truck completely finished?

Remember springs hold weight and if all the items are not on the vehicle then the springs are not holding all the weight they are designed for. Once the vehicle is all together, you need to drive it. Not you and your buddies pushing up and down on the bumper for that ain’t the same.

Drive that puppy, and I mean drive it like you almost stole it. Don’t baby it. Get on it. Mash the accelerator. Stand on the brakes. See if it will take the corner on 2 wheels. Work that suspension. We want to get everything seated and flexing.

Now, will coil springs settle? Yes. How much? If it is the right spring, not much. Maybe a quarter to one half Inch.

If the springs are too strong they will never go down. However if the springs are too light they will start off high and over a short amount of time they will began to collapse.

This is because the springs are over stressed. Or because they were cut with a torch, but you will directed to a web article about this later.

Most Mustang II parts suppliers offer at most 4 different springs. A few, our dealers, offer up to 23 different springs. These many springs are needed because of all the possible ways the MII can be fitted to a vehicle and all the possible engine combinations and locations. We have developed a “cheat sheet” for picking the right spring based upon standard engine weights and mounting locations.

While using this sheet will get the right coil over 90% of the time, it does give us the needed benchmark should your require a different spring. Should you be in the 10% who needs a different spring, simply tell us what needs to be different and by how much and we will swap springs.

You get to pay all shipping costs. Here is the “cheat sheet” for picking the hopefully right spring. Mustang II Coil Springs

Now a few words on cutting coils. It can be and is done. There is a right way and a wrong way. Go here to learn which is which Cutting Coil Springs.

Filed Under: Tech Question Tagged With: Coil Springs, Custom Designing Springs, Manufacturing Springs, Ride Height & Stance, Street Rod

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OEM Replacement & Custom Springs

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How To Order Springs For Your Vehicle

To find the correct springs for your vehicle, you need to provide as much information about your car as possible. There is no such thing as a one-size-fits-all spring.

We try to make this easy by providing many ways to order your springs and send in as much information as possible:

  1. Call Us at 1 (313) 963-3839
    For Quickest Order Completion
  2. Fill Out Our Quote Request Form
    To Spell Out Details
  3. Browse For Parts Online
    To Browse By Make, Model, Body Style, & Engine Size

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WARNING:

This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
www.P65Warnings.ca.gov

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Locate & Connect To EATON Detroit Spring

EATON Detroit Spring, Inc.
1555 Michigan Avenue
Detroit, MI 48216
Phone: 1 (313) 963-3839
Fax: 1 (313) 963-7047
Email: inquiries@eatonsprings.com

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