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Old 11-04-2006, 09:38 AM
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72 Nova Leaf Springs Question - Help!!

Help

I just picked up "new" 5-leaf multi-leaf springs from a discount parts supplier locally here in chicago area. they are for my 72 Nova. The new springs are the correct size, width, etc. However, they are lighter in weight and seem "softer" than the old springs I took off the car. when I say "softer" I mean when stand on the spring and bounce on it with my body weight - it seems softer and the deflection is greater than that of the older 1972 spring. Is that ok or not? I am bothered by this whole thing. The parts store says it is the correct part and they have been using this spring for both F body and X body cars for years. This is my first leaf spring replacement and I have no experience doing this before. Please help. I don't want to do this whole job twice. Do you think the new springs are ok?

Your thoughts please.

Lee

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Old 11-04-2006, 10:55 AM
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Comparing the spring rates of the old and the new assumes the old ones are correct. Becareful there.

Is there any circle track shop in your area who can rate them for you?
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Old 11-04-2006, 11:23 AM
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Quote:
Originally Posted by johnsongrass1
Comparing the spring rates of the old and the new assumes the old ones are correct. Becareful there.

Is there any circle track shop in your area who can rate them for you?
I appreciate your response about comparing old to new - but I am 99% sure the "old" leaf springs are the original ones from 1972. I've only had the car a few years but the spring look old, and the nuts and bolts to remove them were definitely very old and rusted. why would the "older" springs be "stiffer" than the newer springs. doesnt that seem odd to you?

and no about the circle track thing. I am in chicago area. nobody around here even knows what that is.

Lee
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Old 11-04-2006, 11:56 AM
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It seems odd sure enough. I don't know if that a good guess or not.

The basic perameters of spring rate on leafs are"

http://www.thedirtforum.com/leafspringrate.htm


If your old ones are close, I'd use em.
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Old 11-04-2006, 07:21 PM
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Quote:
Originally Posted by johnsongrass1
It seems odd sure enough. I don't know if that a good guess or not.

The basic perameters of spring rate on leafs are"

http://www.thedirtforum.com/leafspringrate.htm


If your old ones are close, I'd use em.
I just measure the "stack" of old leaf springs (5 leafs) vs the stack of the new leaf springs. sure enough, the new leaf springs are 1-1/4" thick and the old ones are 1-1/2" thick. that's a big difference - explaining why they are lighter and softer. I am returning them. I don't want my nova to sit lower once the car is on the ground and I am not taking any chances.

Lee
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