Installed a new rear, now the ride is stiff
#687138
05/03/10 08:46 AM
05/03/10 08:46 AM
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Joined: Oct 2005
Posts: 1,630
Burma Shave
plymouthfan
OP
top fuel
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OP
top fuel
Joined: Oct 2005
Posts: 1,630
Burma Shave
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Maybe I'm overlooking something stupid and very basic, but I'm perplexed. I swapped out the 7 1/4 rear for an 8 3/4 in my Scamp. I reused the springs and shocks which weren't that old to start with. The springs are ESPO's 1" overs. The ride before was fine. Suddenly it's VERY stiff. If you push down on the back of the car there's very little give. I can't figure out what's causing it... makes no sense, lol 
One red car, one yellow car.
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Re: Installed a new rear, now the ride is stiff
[Re: buildanother]
#687143
05/03/10 11:51 AM
05/03/10 11:51 AM
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Joined: Jan 2003
Posts: 4,518
Indiana
MonGoo$e
master
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master
Joined: Jan 2003
Posts: 4,518
Indiana
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Quote:
Did the rear shackles flip forward by chance?
I'm leaning on this qoute. When i did a Challenger, I had ESPO 2" over springs, first day or so, the shackles wanted to flip completely forward..after sitting car down, I was able to bounce back of car around and somewhat force them back to straight up and down, after about a week they went to more the correct position.
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Re: Installed a new rear, now the ride is stiff
[Re: plymouthfan]
#687144
05/03/10 12:45 PM
05/03/10 12:45 PM
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Joined: Jan 2003
Posts: 7,798
Lyons, CO
MileHighDart
master
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master
Joined: Jan 2003
Posts: 7,798
Lyons, CO
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I have almost the same problem on my 68 Dart. Swapped from 7-1/4 to 8-3/4 and at the same time I switched from the original 5-leaf springs (/6car) to new 6-leaf 1+ ESPO springs. Car is very stiff in the back, you can hardly bounce it my hand at all, and the ride is quite stiff now. I went from 5 leaf to new 6 leaf. (I fugured the /6 cars used 5 leaf and V8 cars used 6 leaf, thats why I went with the 6 leaf) But I didn't think that was going to make the car ride like a buckboard ! 
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Re: Installed a new rear, now the ride is stiff
[Re: MonGoo$e]
#687145
05/03/10 12:50 PM
05/03/10 12:50 PM
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Joined: Jan 2003
Posts: 7,798
Lyons, CO
MileHighDart
master
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master
Joined: Jan 2003
Posts: 7,798
Lyons, CO
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Quote:
Quote:
Did the rear shackles flip forward by chance?
I'm leaning on this qoute. When i did a Challenger, I had ESPO 2" over springs, first day or so, the shackles wanted to flip completely forward..after sitting car down, I was able to bounce back of car around and somewhat force them back to straight up and down, after about a week they went to more the correct position.
What is the correct position exactly ?
I just went out to the shop and checked mine, and the shackles are pretty much straight up and down.
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Re: Installed a new rear, now the ride is stiff
[Re: MonGoo$e]
#687147
05/03/10 02:00 PM
05/03/10 02:00 PM
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Joined: Jan 2003
Posts: 7,798
Lyons, CO
MileHighDart
master
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master
Joined: Jan 2003
Posts: 7,798
Lyons, CO
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Quote:
straight up and down are acceptable, 100% correct are when the leaf spring portion of shackle is towards the rear of the car.
Do you think it would have Any effect on firmness or softness of the ride, if I was to put like a 1/4" shim under the rear frame mounted shackle mount, moving it forward, thus making the shackle angle towards the back of the car more ?
Just an idea, but I have no idea if it would help the ride any. 
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