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Old 03-22-2016, 04:03 PM
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Coil free length variance

I recently ordered some bump stop extensions for my front and rear as the PO of my jeep had a 4" lift with none installed. Fronts had no problem but looking at the rears after I removed them, one seemed a bit taller. Sure enough after measuring them and then setting them side by side, the driver's side rear coil is about 3/4" taller than the passenger side. I'm thinking about maybe switching them in case one side is getting more weight than the other, but I don;t honestly think that is the case. There is an after market rear track bar bracket installed with what would seem to be the stock track bar. I haven't taken any measurements of the axle relative to the frame to see if it is centered, but with the wheels and tires on it doesn't appear to be very out of center if it is at all. Ideally I want new coils in the future, but my budget doesn't allow for them at the moment. Has anyone had experience with this? I'm not sure why one coil would sag over the other.

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Old 03-22-2016, 07:17 PM   #2
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Swap them from side to side. When your motor torques is causes more stress to that side.

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Old 03-22-2016, 09:05 PM
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Quote:
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Swap them from side to side. When your motor torques is causes more stress to that side.
that is what I intended to do, but the motor torque really causes one sided spring sag like that?
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Old 03-22-2016, 09:45 PM   #4
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You bet it can!
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Old 03-22-2016, 09:54 PM   #5
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Old Man Emu coils are two different lengths for this very reason, 10mm or ~3/8". I put both of my tall coils on the passenger side.
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Old 03-23-2016, 08:52 AM
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Well this has been good to know that its not some weird occurrence. Thanks guys.
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Old 03-23-2016, 09:17 PM   #7
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Quote:
Originally Posted by hosejockey61 View Post
Swap them from side to side. When your motor torques is causes more stress to that side.
I do not believe you should swap them. As stated by others, there are "A" lengths and "B" lengths. A lengths generally go on the Driver's side and B on the Passenger.

Excerpt from 2014 OME Fitment Guide:
LEAF SPRINGS: A & B springs can be used to compensate for uneven vehicle weight distribution. Springs marked
"A" have a greater camber height than springs marked 'B'. 'A' type springs are generally fitted to the driver's side and
'B' springs to the passenger side.

COIL SPRINGS: A & B springs are used to compensate for uneven vehicle weight distribution. 'A' type springs are
generally higher in free high than the 'B' spring. Individual coil specifications are listed in the back of this publication.
ARB makes "A" (driver side) springs longer for the Wrangler.

Did the taller spring you removed come from the Driver Side ? I would put the spring back on the same side it came out.
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Old 03-23-2016, 09:28 PM
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Well I don't have OME springs. But yes, the taller coil was on the drivers side. It makes sense that taller of the two would go to the passenger side though to compensate for engine torque.
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Old 03-23-2016, 09:29 PM   #9
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Quote:
Originally Posted by MI Smiley View Post
I do not believe you should swap them. As stated by others, there are "A" lengths and "B" lengths. A lengths generally go on the Driver's side and B on the Passenger.

Excerpt from 2014 OME Fitment Guide:
LEAF SPRINGS: A & B springs can be used to compensate for uneven vehicle weight distribution. Springs marked
"A" have a greater camber height than springs marked 'B'. 'A' type springs are generally fitted to the driver's side and
'B' springs to the passenger side.

COIL SPRINGS: A & B springs are used to compensate for uneven vehicle weight distribution. 'A' type springs are
generally higher in free high than the 'B' spring. Individual coil specifications are listed in the back of this publication.
ARB makes "A" (driver side) springs longer for the Wrangler.

Did the taller spring you removed come from the Driver Side ? I would put the spring back on the same side it came out.
I paid no attention to what OME said I should do. Both of my taller A coils are on the passenger side.

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