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Old 03-07-2018, 11:44 PM   #1
Scott Turchin
 
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Default Leaf spring questions

THis may be a dumb question but do these leaf springs on the rear (4x4) wear out?

I've got Bilstein shocks on the back - crap - the fronts are good but this is the 2nd set of Bilsteins and she rocks like a boat in rough water.

but someone mentioned replacing leaf springs - not sure that is necessary but maybe I'm wrong? I do know hte Bilsteins are soft in back - total crap compared to KYB or even my Gabriels that are going back on..
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Old 03-08-2018, 12:47 AM   #2
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I just ordered a set for my 4x4 from a local shop. Rock auto has some. My goal is total suspension replacement. Mine has over 200,000 miles. If the truck has a ton of miles, is old, or was used for a lot of hauling, they will eventually get tired. I'll post some pics of what I got. They should be here in a week.
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Old 03-08-2018, 03:36 AM   #3
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I used to tow a 19' bayliner Motorcycle trailer, and jet ski...so OK.

Rock Auto sells them specific to the truck then?

Awesome, can't wait!
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Old 03-08-2018, 02:54 PM   #4
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Yes. Just plug your truck info in and they will come up. they offer an OEM quality and a Heavy Duty version for a little more $$$. Let me know what you get if you pull the trigger.
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Old 03-08-2018, 04:25 PM   #5
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I bought a new set of Heavy Duty springs for my truck from General Springs:

https://www.generalspringkc.com/Leaf...kup_s/1947.htm

I know the springs can bend and can snap. The "springyness" of spring steel should only be changed if heat were applied to it (like if it gets RED hot, not subjected to Arizona summers).

My dad broke one of the springs on my truck back when he owned it. Being the cheap person that he is, instead of buying new H-D springs, he just picked up a cheap set of springs out of the junkyard. So, the bed was really squishy when I got it.

You know, your 4x4 might have 2x4 springs in the back. Standard 2x4 springs are not as stiff as 4x4 springs.
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Old 03-08-2018, 04:33 PM   #6
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I was going to go with genralspringkc: was impressed with their website and as they are a couple hours south of me. Went local to save shipping and travel.

JP, Are your HD's a lot stiffer when not under load?
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Old 03-08-2018, 04:45 PM   #7
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I can get in the bed of my truck, jump up and down, and the bed doesn't move much.

I took a pic once, when I had 800 lbs of concrete (80 lb bags * 10) loaded near the tailgate.

There was NO indication that the springs were under load.

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Old 03-08-2018, 05:01 PM   #8
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Quote:
Originally Posted by jp2code View Post
The "springyness" of spring steel should only be changed if heat were applied to it (like if it gets RED hot, not subjected to Arizona summers).
That's what I thought so I'm going to change out my crappy Bilsteins to a good quality shock, replace the bushings and then re-test.

Quote:
Originally Posted by jp2code View Post
You know, your 4x4 might have 2x4 springs in the back. Standard 2x4 springs are not as stiff as 4x4 springs.
Not a chance unless the factory put them in.
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