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Old 10-13-2014   #1
BigIke
 
Join Date: Aug 2014
Location: Montgomery TX
Posts: 263
Default FIX ILEAN (she leans too much)

Guy my 91 leans to the left (drivers side) hard. I've read that the C4's lean but this looks silly to me. Measurements are

- front right - 27" - After backing off castle nut 26-9/16"
- rear right - 28-5/8" - After backing off castle nut 28-3/8"
- front left - 26-1/2"
- rear left - 27-1/4"

I backed the castle nut off the right rear (high side) about 1/2", until it was flush with the bolt, and it lowered the rear about half that much, and lowered the front 1/8th or so.

The rear mounts look to be in good condition. Is this a rear spring fix usually or both? Think i can get a longer bolt for the front?

Pics with the castle nut backed out... at night, give day pics tomorrow if needed.





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Mileage: 56K Sept-14 -- 113k May-18!!!
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Old 10-13-2014   #2
Blue Flame Restorations
 
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Join Date: Feb 2010
Location: Pendleton, IN
Posts: 3,904
Default Re: FIX ILEAN (she leans too much)

Check your rear spring extremely well. It my be delaminating and be fractured. Also, spring bolts should be tightened at the same length.
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Old 10-13-2014   #3
We Gone
 
Join Date: Apr 2004
Location: ATL. GA.
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Default Re: FIX ILEAN (she leans too much)

That's more of a lean than I have seen. Not sure what castle nut you are referring to on the front I don't know of any way to ajust the front without removing the spring.

If I'm not mistaken you would need to tighten the nut to raise the car longer bolts lower. I would do some more investigating as to why it sits that much out of level.

Check the rear spring for de-lamination or splitting on the low side would be the first thing to check. I'm sure others will post up also as to what may be the issues.
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1990 Steel Blue/Black #2355
1990 Red/Red #1473
1991 Quasar /Black #118 Sold
1991 Turquoise/Black #766 Parted Out
1993 Yellow/White #179 Sold
1990 Black/Gray #1361 Headers/4:10s Sold

Last edited by We Gone; 10-13-2014 at 11:42 PM.
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Old 10-13-2014   #4
mike100
 
Join Date: Feb 2011
Location: San Marcos CA
Posts: 1,802
Default Re: FIX ILEAN (she leans too much)

While my car did not have that much lean, I did flip the spring around 180 degrees to see if it was due to fatigue on one side...nope- it would appear to be batwing bushing sag or similar.

(I did adjust the preload on the spring bolts to level it out some)
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Old 10-13-2014   #5
randy ransome
 
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Join Date: Mar 2006
Location: Olive Branch,MS
Posts: 291
Default Re: FIX ILEAN (she leans too much)

I've been told it can also be something in the front of your car causing it, or a combination of front and back.

My 95 leans and I haven't been able to solve it.

Good luck

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Old 10-14-2014   #6
BigIke
 
Join Date: Aug 2014
Location: Montgomery TX
Posts: 263
Default Re: FIX ILEAN (she leans too much)

Regarding the Front Castle Nut..

I was talking about backing off the right rear castle nut and seeing it lower the right front 5/16, and the back 1/4... Looks like the rear is jacking the front up... Might Just put a longer bolt in the rear and see what it does. Make sure that it doesn't jack up the camber.
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Mileage: 56K Sept-14 -- 113k May-18!!!
God Damn I Love This Car!
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Old 10-14-2014   #7
We Gone
 
Join Date: Apr 2004
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Default Re: FIX ILEAN (she leans too much)

BigIke, I understand now yes adjusting the rear will effect the front. Be sure when you are checking the body levels your doing so on a level surface. Also to do this correctly there are points on the frame to make these measurements at you can't go just by measuring to body panels. These points and measurements are listed in the FSM.
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1990 Steel Blue/Black #2355
1990 Red/Red #1473
1991 Quasar /Black #118 Sold
1991 Turquoise/Black #766 Parted Out
1993 Yellow/White #179 Sold
1990 Black/Gray #1361 Headers/4:10s Sold

Last edited by We Gone; 10-14-2014 at 12:29 AM.
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Old 10-14-2014   #8
BigIke
 
Join Date: Aug 2014
Location: Montgomery TX
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Default Re: FIX ILEAN (she leans too much)

No matter where it is parked, you can maybe get your hand in the left side (driver); on the right side, you can put your whole arm in there! LOL Maybe i'll get off my tail and jack it up tomorrow
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Old 10-14-2014   #9
5ABI VT
 
Join Date: Jun 2013
Location: Toronto
Posts: 783
Default Re: FIX ILEAN (she leans too much)

Im wondering if it could be dried up control arm bushings possibly? something not letting it settle
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Old 10-14-2014   #10
Dynomite
 
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Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,798
Default Re: FIX ILEAN (she leans too much)

Is it the Front or Rear Suspension causing this. I would jack it up on center (Front) and see if it still leans. Then jack up the center (Rear) and see if it still leans. Once you determine which is the cause, Drive the High Side Tire (Front or Rear) on blocks to see if you can do some twisting back into shape.

It might also release some twisting stress loosening the C-Frame Bolts on the level. I would NOT release the C-Frame bolts with one (Front or Rear - Left or Right) wheel on blocks. Make sure the Transmission is back in alignment with the chassis after loosening the C-Frame Bolts.

Loosen the Hard Top just in case there is some twisting when you do some checking.

Just a thought

Last edited by Dynomite; 10-14-2014 at 08:41 AM.
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