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On the lower portion of the rear springs is a plastic sheath that covers about three of the coils. Is there any reason for these other than to accelerate the rusting of this portion of the springs? Can I live without them?
Thanks.
 

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Hi hted

I have never known why they put the plastic around the bottom few rear spring coils.
i have noticed,on the hoist,that the lower few coils can,and do,rub on the axle housings,and can cause a squeek.
I usually remove the plastic from the rear springs cause i have found rust starts in there and ghave also seen spring break in there due to water getting in there,,rust starts,then they break.
Just remove the rubber,and evaluate the spring coil condition.

Anyone else want to add to this ?

Robert
 

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I've owned several parts and project cars that had broken rear springs strictly because of the rust under the plastic. I've always eliminated it with no downside that I can discern.
 

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I've heard it said that this sheath was meant to damp certain harmonics in the springs owing to road vibrations, but AFAIK no other manufacturer has ever done this, nor whether it's actually useful.
 
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