Suspension and Chassis Questions about your suspension? Need chassis advice?

Hi performance alignment techs look here.

Thread Tools
 
Search this Thread
 
Old Aug 27, 2002 | 10:13 PM
  #1  
FIRECHICKEN's Avatar
Thread Starter
Senior Member
iTrader: (3)
 
Joined: Jul 1999
Posts: 816
Likes: 0
From: Mechanicsburg, PA
Car: '89 Formula 350
Engine: 5.7L L98 TPI
Transmission: 700-R4 Automatic
Axle/Gears: 7.5 disc posi 3.23
Hi performance alignment techs look here.

Here is what my print out says.

LF ACTUAL BEFORE

Camber: 0.1 deg 0.6 deg
Caster: 5.2 deg 5.2 deg
Toe: 0.10 " 0.18 " w/wheel centered


RF ACTUAL BEFORE

Camber: 0.0 deg 0.2 deg
Caster: 5.4 deg 5.4 deg
Toe: 0.09 " -0.34 " w/wheel centered

FRONT

Cross Camber: 0.1 deg 0.4 deg
Cross Caster: -0.2 deg -0.2 deg
Total toe: 0.19 deg 0.16 deg



LR

Camber -0.0 deg -0.0 deg
Toe -0.11" -0.12 "

RR

Camber -0.4 deg -0.4 deg
toe 0.14" 0.13 "


REAR

Total toe: 0.03" 0.01"
Thrust angle: -0.25 deg -0.24 deg

These are all the measurements on the page. The camber on the left was maxed out so that is all I could get from it. The tech wouldn't do the caster.


What do you get from this?
Reply
Old Aug 27, 2002 | 11:24 PM
  #2  
Matt87GTA's Avatar
Supreme Member
 
Joined: Mar 2001
Posts: 2,047
Likes: 0
From: The State of Hockey
Car: 1987 Trans Am GTA
Engine: Miniram'd 383, 24X LS1 PCM
Transmission: TH700R4, 4200 stall
Axle/Gears: 9", 4.33:1
If you are maxxed out with .1* of POSITIVE camber - there is something wrong...... If you are looking to make this thing turn better you want to get as much NEGATIVE camber as you can get.... If you just want it to handle good on the street and still not eat up tires, a slight negative camber setup should get you what you want - like maybe - .5* or less on each side.... but these figures need to be the same from side to side unless you are tuning for a certain track or something.

Your Caster readings look pretty good but a little less would make it turn in to corners a bit easier

Toe in should be +.1 or so on each side so you are probably OK there, but it is evident that this guy just got the readings within specs and let it go.....
Reply
Old Aug 27, 2002 | 11:25 PM
  #3  
AlkyIROC's Avatar
Moderator
25 Year Member
 
Joined: Jul 1999
Posts: 17,262
Likes: 168
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
How are you trying to set this up? Daily driver, circle track, drag strip?

If you look through the FAQ you'll see a bunch of different settings.
Reply
Old Aug 28, 2002 | 01:00 AM
  #4  
vortechLT1's Avatar
Member
 
Joined: Aug 2002
Posts: 139
Likes: 0
From: kissimmee FL
sounds like somthing is bent! also if the car is to be used on the street even with the camber and toe set it will still have a slight drift to the right due to the crowning of the road and the caster being the same on both sides (the right side should lead the left slightly)
Reply
Old Aug 28, 2002 | 05:24 PM
  #5  
mrr23's Avatar
Supreme Member
 
Joined: Oct 2001
Posts: 1,392
Likes: 4
From: orlando, fl usa
Car: 1986 pontiac TA
Engine: 360 HSR
Transmission: 700r4 3300 yank converter
Axle/Gears: 3.27 9 bolt
to answer your questions. it may drift a little to the right, if at all. should have a cross caster of -.3 to -.5 meaning left 5.0 and right 5.5 the reason the camber is "maxed" out on the left would be because the springs are worn out. as springs wear, the camber goes more positive. nothing bent. it's real hard to bend a spindle downward. thus increasing camber. more positive.

you won't get any abnormal tire wear out of this. now the tech saying he won't adjust caster. now that's lazy. camber doesn't have to be equal on both sides. with the way you have it now, the car will want to go left (towards the higher camber). which is a good thing. because of the crown of the road. with caster, the car will go towards the lower caster number. in your case, the lower number is on the left. again, a good thing. so, it should go straight.
Reply
Old Aug 31, 2002 | 11:19 PM
  #6  
FIRECHICKEN's Avatar
Thread Starter
Senior Member
iTrader: (3)
 
Joined: Jul 1999
Posts: 816
Likes: 0
From: Mechanicsburg, PA
Car: '89 Formula 350
Engine: 5.7L L98 TPI
Transmission: 700-R4 Automatic
Axle/Gears: 7.5 disc posi 3.23
WOW, Worn springs really? I thought springs hardy ever wear out.

Do you reccomend replacing them and this fixing the problem. I thought worn ones would have a tendancy to make a more negative camber?
Reply
Old Sep 1, 2002 | 08:44 AM
  #7  
mrr23's Avatar
Supreme Member
 
Joined: Oct 2001
Posts: 1,392
Likes: 4
From: orlando, fl usa
Car: 1986 pontiac TA
Engine: 360 HSR
Transmission: 700r4 3300 yank converter
Axle/Gears: 3.27 9 bolt
Originally posted by FIRECHICKEN
WOW, Worn springs really? I thought springs hardy ever wear out.

Do you reccomend replacing them and this fixing the problem. I thought worn ones would have a tendancy to make a more negative camber?
metal fatigues over time. just like valve springs in an engine. with all the cycling they go through (up and down), they wear out. to give a check on them do this. with good springs, stock height, i can ut about 3 fingers between the top of the tire and the fenderwell. with wornout ones, you usually can't get a finger in. or the tires are tucked up inside the fenderwell.

as a car lowers, from spring fatigue, the camber goes more positive. if you get it back on an alignment machine and can look at the screen, push down on one side. you'll see the camber numbers go up for that side.

as far as replacing them. that's up to you. it isn't necessary at this point. but it will ride and handle much better when you do.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Hotrodboba400
Firebirds for Sale
3
Dec 10, 2019 07:07 PM
88rscamar0
Transmissions and Drivetrain
5
Sep 23, 2015 09:08 PM
91L98Z28
Southern California Area
10
Sep 19, 2015 09:35 AM
scottmoyer
Camaros for Sale
3
Sep 7, 2015 07:06 PM
Formula_88AE
Engine Swap
1
Sep 3, 2015 01:47 PM




All times are GMT -5. The time now is 02:47 AM.