Shimming front drivers coil after lift... - Ford Powerstroke Diesel Forum
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Old 06-29-2013, 01:13 PM
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Shimming front drivers coil after lift...

Ok, I have searched and I know there is an issue with the front driver side being lower but what happens to the rest of the ride quality/alignment if you simply add a 1/2" spacer to the bottom of the cool perch? TGC has them and when jacking it up by 1/2" on the driver front, it levels it out completely across the front AND the rear!!! I just put a new 3" coil lift with 4" blocks and was hoping the new coils would correct. Thoughts on just the 1/2" spacer on the bottom?

Here's my girl now.Shimming front drivers coil after lift...-imageuploadedbyautoguide1372540390.504349.jpg


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Old 06-29-2013, 01:16 PM
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new coils shouldn't sit low on one side even with a full tank IMHO

but if it sat low before I would be checking the rear since that can mess with the front also


make sure you drove it enough after having it jacked up to settle everything

make sure nothing is holding the travel down like a shock or bound up radius arm, track bar ,ETC ?


the leveling spacer if u do use it for a 1/2 inch shouldn't be detrimental but I would rather find the real issue if it was mine

Last edited by ZMANN; 06-29-2013 at 01:20 PM.
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Old 06-29-2013, 01:39 PM
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It was lower stock as well. Same amount. There are lots of threads out there about this and I wondered why. Could it possibly be the position that the coil sits? The lower coil perch on the passenger side has the lower coil end at the 9 position looking in towards center of truck. The driver side is opposite that , at 3 looking towards center of truck in regards to the way the coil perch sits which makes the coil lower by default simply from where the lower coil end, well, ends. One would think with identical height coils, that wouldn't matter but add the top perch angle and top bushing, and it could be the whole issue. In theory...

The rear is just about spot on. Stock or lifted both measure 44".
I think I'll try it as I, unfortunately, can see a 1/2-3/4 difference...... But, with it being Saturday afternoon, all others please feel free to chime in!!!


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Old 06-29-2013, 01:42 PM
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And, the lift was installed last weekend. Got about 120 miles on it now. Only thing torqued after I put back down off lift was the radius arm in the new drop brackets and new shocks. Everything else was done with truck on lift which wouldn't matter since they were non bushing items like radius brackets and trackbar bracket.


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Old 06-29-2013, 01:52 PM
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Here's what I mean. As they sit in the truck now the driver side INSIDE is 1/2-3/4 lower:
Shimming front drivers coil after lift...-imageuploadedbyautoguide1372542655.947869.jpg

Rotating the lower coil perch makes the inside of both sides equal:
Shimming front drivers coil after lift...-imageuploadedbyautoguide1372542696.231710.jpg

No issue changing the bolts/threads in the driver side lower coil retainer so the coils will match. Thoughts on if anyone else thinks this is the cause?


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Old 06-29-2013, 02:29 PM
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not sure on yours but mine has a lower spring pocket that you butt the end of the coil into so it should only sit in one place then the top you make sure you rotate the isolator until it butts up against the coil end so if done correctly they should be the same on each side


if improperly you could increase lift on one side or the other because it would ramp upon the coil mount or isolator
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Old 06-29-2013, 02:35 PM
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here is the taper I am referring ( best pic I could find ) to that mine has top and bottom

so if u miss seating the spring properly you can see how it would increase the lift

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Old 06-29-2013, 06:52 PM
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True, but mine are seated up against the stops on both sides. And, with the number of threads on this "leaning" topic across the different diesel and F150 forums, it's not just an issue I've got.


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Old 07-01-2013, 02:31 PM
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Rotating the bottom spring perch only gained a 1/4" so, I made a plate out of 1/2" plate steel shaped to mimic the bottom of the perch. Painted it, reinstalled and drove today for about 50 miles. Rear sits perfectly flat at 44" and the front is off by only an 1/8" now so basically 43.25" across the front. The front bumper with a 4' carpenters level shows the same. Exactly what I wanted and it drives no different. I'm picky and it drives just as good as it did before.


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Old 07-01-2013, 06:09 PM
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do not add just one spacer, trim the other coil slightly, then if you want add a pair of spacer. you will preload and cause premature failure with just one.
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