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Re: better ride quality
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No worries. Sometimes you have to keep trying things to solve a mechanical/technical issue. Sometimes its easy. If you keep trying, I'll keep trying to help. 😎 |
Re: better ride quality
Have you determined if the harshness is coming from the front or rear or both? If your feeling harshness in the steering wheel you should work on the front suspension. If you can feel it through the seat you want to take a look at the rear suspension.
Your shock lengths look fine based on your measurements for both the front and rear. On my '83 I was seeing about 1" of compression travel in the front and about 2" to 2 1/2" in the rear with stock springs. I don't have part numbers, but I have seen CPP front springs at about 1,100 lbs./in. With stock take out springs range from 650 to 800 lbs./in. The gas charged shocks will also add some spring rate to the suspension. Once you have an idea if the harshness is coming from the front or rear, I would remove the shocks from that end of the truck and test drive. If the ride quality improves you need different shocks. If it stays the same you should look into different springs. I would start in the rear based on the information in your previous posts. |
Re: better ride quality
Thank for your suggestions. It will be a little while before I can do any testing.
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Re: better ride quality
I am currently trying to get over COVID 19
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Wish you a speedy recovery
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Re: better ride quality
Do take care. I've been impacted by the virus (family member & a friend) & know it is no joke despite the declaration "It's just a virus".
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Re: better ride quality
I was thinking. Cpp sells both a regular 4 inch rear drop coil and an heavy duty version. I wonder if I accidentally got the HD version.
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Re: better ride quality
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My Dually's 9-leaf + overload rear set-up would beat you up. The air-bags that replaced them ride much better unloaded & are easy to adjust for a load when necessary. I know that's a coil vs leaf comparison, but more spring rate than is needed will yield a harsher ride is the point. |
Re: better ride quality
CPP customer service is horrible. I emailed them about their spring rate twice and they never replied. I asked on Summit racing. Where you can ask a question about a product and CPP replied and he said he did not know the spring rate. What a joke. They don’t know the spring rate of their own products.
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Re: better ride quality
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Re: better ride quality
I could not find any numbers on my rear coils to see if they are hd coils or not but I did push down on the front and the rear to see what the difference is. The rear is much stiffer in the rear. I think I need softer rear coils.
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Re: better ride quality
When I push down on the rear of the truck it rebounds and stays still. When I push down on the front it rebounds and then tends goes back down and up without me touching it. It takes more force to push down in the back than in the front. I made 2 videos of this but I don't know how to post them.
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Re: better ride quality
So here are 2 videos of my suspension. The first is one of me pushing down on the front and the second of me pushing down on the rear.
https://youtu.be/cS1vulitOkA https://youtu.be/uhJ6lEW9XmQ |
Re: better ride quality
So I decided that my first step in improving my ride quality is getting a new set of front shocks from Belltech I will be getting their Nitro 2 shocks for a softer smoother ride. I will see how it feels from their.
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Re: better ride quality
What did you think of how the rear responded
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Re: better ride quality
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There are no contact marks of the rear-end above the differential making contact w/the floor? |
Re: better ride quality
Yes the u bolts are supposed to make contact with the bump stops if it bottoms out. In that photo that shows 2.5 inches I think that there is a jack under the differential. So it should be about the same as having the full weight on the tires. Or nearly the same. I don’t see any signs of the diff hitting the bottom of the bed.
I really don’t think that my problem is it bottoming out it is more like I am feeling every crack and bump in the road. I don’t hear any thing making contact. |
Re: better ride quality
One thing I have noticed is that when I have weight in the bed it rides a little smoother
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Re: better ride quality
I recently reinstalled them and they were vary hard to compress. I had to use a ratchet strap to help compress them.
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Re: better ride quality
I've always suspected that aftermarket front drop coils are just stock coils that have been cut. That would be why they can't tell you what the rate is. Also with cut coils the more you cut the stiffer it gets.
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