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Old 11-25-2011, 06:37 PM
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Coil over questions - Rough ride

Hello all. I have a 1936 ford 3 window and Im struggling with the ride. The car is set of with a triangular 4 bar and coil overs. I have weighed the car and the rear end weighs 1700lbs. The rear end rides real stiff. I am running 18" wheels in the rear with a semi low profile tire. I realize that a taller tire would help, but thats not the root of the problem. I currently have all american coil overs with 250-400lb progressive springs. I have tried 200lb, 250lb, 350lb and even 400lb springs with not much change. Ive been told to try Bilstein coil overs that are adjustable in both the compression and rebound. The shocks I currently have are not adjustable at all. Im looking for some opinions before I spend another thousand dollars on a set of shocks that dont make any difference. Any advise would be greatly appreciated. Thanks!

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Old 11-25-2011, 06:59 PM
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Quote:
Originally Posted by 36Lenny
Hello all. I have a 1936 ford 3 window and Im struggling with the ride. The car is set of with a triangular 4 bar and coil overs. I have weighed the car and the rear end weighs 1700lbs. The rear end rides real stiff. I am running 18" wheels in the rear with a semi low profile tire. I realize that a taller tire would help, but thats not the root of the problem. I currently have all american coil overs with 250-400lb progressive springs. I have tried 200lb, 250lb, 350lb and even 400lb springs with not much change. Ive been told to try Bilstein coil overs that are adjustable in both the compression and rebound. The shocks I currently have are not adjustable at all. Im looking for some opinions before I spend another thousand dollars on a set of shocks that dont make any difference. Any advise would be greatly appreciated. Thanks!
The tires can cause some of the rough ride... Did you check to see where the shock rod is at??? Did the car come down any when you set it on the ground??? Is the shock fully extended at ride or riding low or is it centered.... I'm talking about the stroke... Hope you under stand what I'm getting at..

Did you try anything under 200lbs springs ???
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Old 11-25-2011, 07:52 PM
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Here's a great article on coilovers!
http://www.rodandcustommagazine.com/...tes/index.html
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Old 11-25-2011, 07:55 PM
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spring rates soud high for the rear

Even a old Ford mustang rear with leaf springs were only about 130 lbs per inch rates. I had my 1948 ford with a 390 and a 9inch axle was only 125 lbs coil overs and rode like a champ. I think you are way to heavy on the rear. I have always ran as light as spring rates as possible even when dirt track racing front and rear. If you cant replace trying angling them in by 20 degrees or more that will lessen the rates some what
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Old 11-25-2011, 09:16 PM
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Yeah newinteriors is on the right path, check and
See if your shocks are bottoming out. They control
Wheel movement
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