Suspension, Chassis, and Brakes Shocks, springs, cages, brakes, sub-frame connectors, etc.

Hit curb, got alignment, still not straight

Thread Tools
 
Search this Thread
 
Old May 14, 2009 | 03:54 PM
  #1  
Skull Leader's Avatar
Thread Starter
Registered User
 
Joined: Sep 1998
Posts: 455
From: Skull-1 revival
Red face Hit curb, got alignment, still not straight

Well, long story short, I hit a curb cuz my ABS locked up, front passenger's wheel mooshed. Got replacements all around, but the tire shop idiots did not do an alignment. I replaced the spindle + control arm and did a ghetto alignment to make Skull-1 drivable, but it still pulled to the right.

Fast forward months (and months). I noticed front passenger tire wear, so the other day I get an alignment. They said the rear is out of alignment as well. Here are some specs that are out of wack:

front right camber -1.4 (should be -0.1 to 0.9)
front right caster 3.7 (should be 4.3 to 5.3)
front cross camber -2.0 (should be -0.7 to 0.7)
front cross caster 1.3 (should be -0.7 to 0.7)
rear thrust angle -0.23 (should be -0.15 to 0.15)
axel offset -0.19 (should be -0.15 to 0.15)
wheelbase difference (before) -0.65

They said to take it to a frame shop. There is nothing that looks bent or jumps out as far as being damaged. Replacing parts (hopefully) should not be a problem. I do have to take a long distance trip soon. What should I be on the lookout for?
Old May 14, 2009 | 04:45 PM
  #2  
shoebox's Avatar
Registered User
 
Joined: Dec 1969
Posts: 27,727
From: Little Rock, AR
Get another opinion or take it to a frame shop like they said and have it checked against factory specs. There is no way you can eyeball small increments of misalignment.
Old May 15, 2009 | 11:32 AM
  #3  
multicar's Avatar
Registered User
 
Joined: Oct 1998
Posts: 226
From: Raleigh, NC
Like he said, find another alignment shop and shoot for:
+4 caster
-0.5 camber
1/32 toe
The cross car numbers should be close to zero.
You'll be much happier with that.
Your rear axle is a little canted, most are, its not real bad.
Old May 15, 2009 | 09:10 PM
  #4  
95TA04GOAT's Avatar
Registered User
 
Joined: Mar 2008
Posts: 137
From: Long Island NY
Your pull is likely due to the cross caster. Sometimes a bent frame or component will not allow enough adjustment to get the caster close enough. Doing alignments on cars that have been hit often times requires a bit of compromise. The right front caster should be maxed out, (i'd assume 3.7* is the max caster they can get) and the left front should be as close to 3.7* as possible.

Did you replace both the upper and lower control arm?
Old May 18, 2009 | 09:42 AM
  #5  
Skull Leader's Avatar
Thread Starter
Registered User
 
Joined: Sep 1998
Posts: 455
From: Skull-1 revival
The guy said it was the best it would get. Plus there's the added expense of another shop. I did replace both control arms as far as I remember.
Old May 31, 2009 | 09:46 PM
  #6  
briand069's Avatar
Registered User
 
Joined: Sep 2004
Posts: 146
From: Northern Calif
I think when a shop can't get the alignment right or doesn't want to take the time to do it, they say take it to a body shop. When I had mine aligned, they told me the same thing. I took it to another shop that was able to align it just fine and they said the rear looked fine to them. The first shop also told me there was no camber or caster adjustment.
Old Jun 2, 2009 | 08:44 PM
  #7  
NED4SPD's Avatar
Registered User
 
Joined: Jun 2001
Posts: 109
From: Windsor Ontario Canada
I don't know where you are located but I am in windsor and you can bring it to my shop and i gurantee that it will go straight. Easy way to look at the numbers

-2.0 -1.4
1.3 3.7
toe i don't care about right now

ok looking at the numbers remember that camber pulls more positive and caster pulls more negative. so by rights you car should go to the left only because of your caster pull. But in all cases there are exceptions like the tire wear and your toe etc. I would be lowering the camber adjusting the camber to make the left more positive on the left and bring your caster on the left up a bit to 3.2 roughly. Try to cross your tires if able and you would be good as new. Oh and you could still have bent parts you just can't see, worked at a shop with a bodyshop attached and I did all the wrecks and cars that got hit did take time to get them right but there is always a way to get the desired numbers.


Ignore my run on sentences and the fact i am to lazy to correct it!

Last edited by NED4SPD; Jun 2, 2009 at 08:47 PM.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Formula Steve
LT1 Based Engine Tech
45
Sep 19, 2023 08:31 AM
Matt Dreessen
Fuel and Ignition
1
Sep 9, 2015 09:58 PM
blaze309
General 1967-2002 F-Body Tech
2
Sep 8, 2015 05:27 PM
Greg88
Drivetrain
4
Aug 24, 2015 07:59 AM
Boss002
Autocross and Road Racing Technique
1
Jul 9, 2015 03:33 PM




All times are GMT -5. The time now is 02:28 PM.