Sponsored

Rear Camber

Pauliejr

Well-Known Member
Joined
Mar 23, 2018
Threads
17
Messages
98
Reaction score
16
Location
Long Island
Vehicle(s)
2016 GT PP
So I had my car aligned last weekend and they were able to get the car feeling good and the front correctly aligned.

However I and at -3 negative camber even in both rears.

This place is a race alignment shop, but he said he could do anything with the rear (no one seems to want to do any adjustments on the stock rear)

What should I get to correct this? And also why do I have so much negative camber?

I’m running BMR handling springs with Koni Shocks. I’ve rear people drop from like 1.4 to 1.6, 1.8 or even 2 the max.

Any reason I am sitting so negative in the rear? I assume it’s just because it’s not adjusted at all. What’s the best product to correct this? Or do I have another issue.
Sponsored

 

ugstang17

Well-Known Member
Joined
Oct 26, 2018
Threads
9
Messages
1,321
Reaction score
693
Location
unknown
Vehicle(s)
none
First things first. Contact Kelly at BMR tech support and explain what was found and find out what you need to do to correct it. There are solutions available to correct rear camber on an IRS just as there are solutions to correct front camber when vehicles are lowered. This is why BMR offers a minimum lowering handling spring kit as well. Not everyone wants to spend the money needed to correct camber on all four corners for maximum contact patch area.

A "race alignment shop' may not have worked on S550 IRS setups. Or they only deal with SRA rear end setups. It's all in what they have been exposed to OR prefer to work on. Likewise there are Performance Tuning shops that are awesome at tuning but will not tune Coyotes. Has nothing to do usually with the integrity of the shop, but more so to their clientel and what they are best equipped to work on.

Good luck.
 
OP
OP

Pauliejr

Well-Known Member
Joined
Mar 23, 2018
Threads
17
Messages
98
Reaction score
16
Location
Long Island
Vehicle(s)
2016 GT PP
First things first. Contact Kelly at BMR tech support and explain what was found and find out what you need to do to correct it. There are solutions available to correct rear camber on an IRS just as there are solutions to correct front camber when vehicles are lowered. This is why BMR offers a minimum lowering handling spring kit as well. Not everyone wants to spend the money needed to correct camber on all four corners for maximum contact patch area.

A "race alignment shop' may not have worked on S550 IRS setups. Or they only deal with SRA rear end setups. It's all in what they have been exposed to OR prefer to work on. Likewise there are Performance Tuning shops that are awesome at tuning but will not tune Coyotes. Has nothing to do usually with the integrity of the shop, but more so to their clientel and what they are best equipped to work on.

Good luck.

I posted on one of Kelly’s threads about this. I don’t mind having to purchase something as I’ve already done a full suspension setup (springs, struts, shocks, bushings, ex...) as well as a caster camber kit upfront.
 

Vegas5OH

Well-Known Member
Joined
Aug 19, 2016
Threads
2
Messages
372
Reaction score
299
Location
Las Vegas
Vehicle(s)
2016 5.0 PP
you dont need to buy anything to correct the camber in the rear, it is fully adjustable. sounds like your shop doesn't know what they are doing. Literally one of my buddy's has bmr drag springs in the rear and there was enough adjustment with factory arms to get the rear camber to 0.
 

NightmareMoon

Well-Known Member
Joined
Nov 22, 2015
Threads
62
Messages
7,053
Reaction score
6,314
Location
Austin
Vehicle(s)
2016 Mustang GT PP w/ Voodoo
Vehicle Showcase
1
The rear camber adjustment is in a somewhat unexpected place (chassis side of the U shaped camber arm). Its not even marked for adjustment so unless you KNOW that bolt is slotted, it won't look like anything is adjustable, but it is indeed slotted and does offer enough adjustment to get you back into a good place (~1.5 rear camber).
 

Sponsored

Grintch

Well-Known Member
Joined
Nov 7, 2014
Threads
15
Messages
1,917
Reaction score
822
Location
Hunstville
Vehicle(s)
2015 GT PP
The rear camber adjustment is in a somewhat unexpected place (chassis side of the U shaped camber arm). Its not even marked for adjustment so unless you KNOW that bolt is slotted, it won't look like anything is adjustable, but it is indeed slotted and does offer enough adjustment to get you back into a good place (~1.5 rear camber).
Yes, even experianced shops can overlook the adjustment. But 4+ years in I am surprised they still don't know.

How the heck do you get - 3? Mine is maxed out at a bit less than 2, I would actually like a bit more as I still wear the outside edge at the track.
 

Cardude99

Well-Known Member
Joined
Feb 14, 2016
Threads
69
Messages
2,472
Reaction score
1,058
Location
Phoenix, AZ
First Name
Sam
Vehicle(s)
2018 Ecoboost
Can someone post a photo of the bolt in question? I want to know where the adjustment point is so that if the alignment shop doesn't know how to adjust the rear I can show them.
 

BmacIL

Enginerd
Joined
Sep 21, 2014
Threads
69
Messages
14,989
Reaction score
8,907
Location
Naperville, IL
Vehicle(s)
2015 Guard GT Base, M/T
Vehicle Showcase
1

Roadway 5.0

Strassejager
Joined
Dec 19, 2016
Threads
57
Messages
1,477
Reaction score
1,782
Location
New York - USA
First Name
Mike
Vehicle(s)
2016GT PP 6MT
Vehicle Showcase
1
How the heck do you get - 3?
I’m glad someone asked this...-3 with his spring drop doesn’t seem possible. Either the alignment shop’s readout is wrong, or something is very wrong with his car.

OP, are you sure your rear wheels are flush to the hubs?
 

Sponsored

Niz55

Well-Known Member
Joined
May 10, 2015
Threads
358
Messages
3,674
Reaction score
1,284
Location
Us
Vehicle(s)
17 GT350
It shows you in the alignment program how to adjust the rear camber. Lazy techs.

I adjust my camber at home with ease and take it in to alignment toe adjust the to only.
 
OP
OP

Pauliejr

Well-Known Member
Joined
Mar 23, 2018
Threads
17
Messages
98
Reaction score
16
Location
Long Island
Vehicle(s)
2016 GT PP
I’m glad someone asked this...-3 with his spring drop doesn’t seem possible. Either the alignment shop’s readout is wrong, or something is very wrong with his car.

OP, are you sure your rear wheels are flush to the hubs?
Honestly I am not sure. I did not get a print out (I forgot) and I believe that is what he told me.

I am running 19x11 325/30/19 in the rear with koi shocks, Steeda shock mounts and the bar springs.

I can upload a picture of my rear tires, if that will give any visual aid to if its actually at -3

just for the record I don't think anyone has ever adjusted the rear of this car. I have taken apart and assembled many times so I am not sure if this will play into how it could be so negative.

I also have replaced both rear hubs about 8 months ago. I would think my wheels are sitting flush as I would have a MEAN wobble
 

Grintch

Well-Known Member
Joined
Nov 7, 2014
Threads
15
Messages
1,917
Reaction score
822
Location
Hunstville
Vehicle(s)
2015 GT PP

ugstang17

Well-Known Member
Joined
Oct 26, 2018
Threads
9
Messages
1,321
Reaction score
693
Location
unknown
Vehicle(s)
none
How does it gi

How does it give you more? Looks like it replaces a slotted adjustment with anything you want between the min and max limits with a fixed, two position adjustment. And nowhere does it indicate what those two positions/settings are.
By the way it installs and sits out further -- with respect to the stock mounting positions -- it corrects for negative camber caused by extremely lowered vehicles. Simple geometry. Based on the pivot point of the LCA this pushes the mounting point of the camber link out further creating an offset to correct for the lower spring inducing the negative camber if it is needed.
 

Roadway 5.0

Strassejager
Joined
Dec 19, 2016
Threads
57
Messages
1,477
Reaction score
1,782
Location
New York - USA
First Name
Mike
Vehicle(s)
2016GT PP 6MT
Vehicle Showcase
1
Honestly I am not sure. I did not get a print out (I forgot) and I believe that is what he told me.

I am running 19x11 325/30/19 in the rear with koi shocks, Steeda shock mounts and the bar springs.

I can upload a picture of my rear tires, if that will give any visual aid to if its actually at -3

just for the record I don't think anyone has ever adjusted the rear of this car. I have taken apart and assembled many times so I am not sure if this will play into how it could be so negative.

I also have replaced both rear hubs about 8 months ago. I would think my wheels are sitting flush as I would have a MEAN wobble
I’ll be straight forward: between this post and the last of yours concerning instability issues, I would strongly recommend you take your car to a reputable shop and have them inspect for safety.

You can post some photos, but I’m concerned that something in your installation process has gone wrong.
Sponsored

 
 








Top