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Old 02-19-2018, 08:04 PM   #2
1930 coupe
Senior Member
Join Date: May 2010
Posts: 142
Default Re: front spring sag

Bumper height is not a very good way to check spring sag, because different wheels and tires will change bumper height.
Arching springs can be simple if you have all the proper tools and skills.
It can be a nightmare if you do not have the proper tools and skills.
Some people say to put the spring leafs in a vise and pull with a large wrench, usually all you get that way is a turned over work bench and a sore back.
I clean and bead blast each leaf, I use a hydraulic press to bend the leafs making a small bend about every two inches. Lay the leafs on a flat surface after bending, then push the leafs together until the ends touch the leaf under it and the spacing between the leaves should be somewhat uniform. Put the center bolt in and tighten it up and measure the length of the spring to see if you bent it enough. I like to over arch them about 1/2" to one inch in length to allow for settling after it is put back on the car.
Attached Images
File Type: jpg f spring 01.jpg (165.4 KB, 32 views)
File Type: jpg f spring 02.jpg (247.0 KB, 35 views)
File Type: jpg f spring 03.jpg (38.8 KB, 40 views)
File Type: jpg f spring 04 corrected.jpg (40.7 KB, 43 views)

Last edited by 1930 coupe; 02-19-2018 at 08:22 PM.
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