Author Topic: Alignment changes  (Read 1174 times)

Offline dodj

  • Sr. Resident
  • ******
  • Posts: 6197
Alignment changes
« on: August 18, 2013 - 07:08:22 AM »
I'm planning on lowering the car's nose a little more. Hoping to get it down another inch maybe? 72blunblu's car looks lower than mine so I figure there is room to drop a little more. I know changing the ride height changes the alignment, just don't know what changes. By lowering an inch what should I expect? Less camber? Would caster change? I'm guessing toe in would remain constant?  :clueless:
Scott
1973 Challenger  440 4 spd 
2007.5 3500 6.7 Cummins Diesel, Anarchy tuned.
Good friends don't let friends do stupid things. ........alone.




Offline brads70

  • C-C.com Expert
  • ********
  • Posts: 18747
Re: Alignment changes
« Reply #1 on: August 18, 2013 - 09:51:50 AM »
I would say all three change, caster, camber and toe. Enough to really matter with an inch drop? I can't say?  :dunno:
Brad
1970 Challenger 451stroker/4L60 auto OD
Barrie,Ontario,Canada
Proud to own one of the best cars ever made!!!!!

My restoration thread 
http://www.cuda-challenger.com/cc/index.php?topic=59072.0
 My handling upgrade post
http://www.cuda-challenger.com/cc/index.php?topic=73985.0

Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36620
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: Alignment changes
« Reply #2 on: August 18, 2013 - 09:38:44 PM »
camber will change a bit usually for the better pushing the bottom of the tire out a little .
The caster will not alter .
the toe  will change the most as the tie rods change angle .
« Last Edit: August 19, 2013 - 01:22:52 PM by Chryco Psycho »

Challenger - You`ll wish You Hadn`t

Offline dodj

  • Sr. Resident
  • ******
  • Posts: 6197
Re: Alignment changes
« Reply #3 on: August 19, 2013 - 08:13:49 AM »
Well a bit more camber won't bother me. I was mainly concerned if I would have less camber or affecting caster.
Plus, like you say Brad, 1" lower may not be significant.
Thanks! :cheers:
Scott
1973 Challenger  440 4 spd 
2007.5 3500 6.7 Cummins Diesel, Anarchy tuned.
Good friends don't let friends do stupid things. ........alone.

Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36620
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: Alignment changes
« Reply #4 on: August 19, 2013 - 01:23:27 PM »
Make sure you reset the toe in

Challenger - You`ll wish You Hadn`t

Offline dodj

  • Sr. Resident
  • ******
  • Posts: 6197
Re: Alignment changes
« Reply #5 on: August 20, 2013 - 08:04:20 AM »
I'll do that. Do you think it will change more than 1/16"?
Scott
1973 Challenger  440 4 spd 
2007.5 3500 6.7 Cummins Diesel, Anarchy tuned.
Good friends don't let friends do stupid things. ........alone.

Offline Aussie Challenger

  • Resident
  • *****
  • Posts: 3407
  • In Kansas loaded for Drive to West Coast.
Re: Alignment changes
« Reply #6 on: August 20, 2013 - 08:28:40 AM »
When lowering make sure you still have enough distance between the lower control arm and the bump stop rubber, you may have to trim the rubber slightly to get more suspension movement. Not enough clearance and the ride will be very bumpy and wash out on corners.
I haven't measure a MOPAR front suspension on an alignment machine for many years but I would think that castor would definitely be affected.
Dave

Offline dodj

  • Sr. Resident
  • ******
  • Posts: 6197
Re: Alignment changes
« Reply #7 on: August 20, 2013 - 08:38:21 AM »
Thanks for the reminder Dave, I bought energy suspension .6" bumpers for the front control arms back in the winter, but forgot to put them on. Now I just have to find them..... :clueless:
Scott
1973 Challenger  440 4 spd 
2007.5 3500 6.7 Cummins Diesel, Anarchy tuned.
Good friends don't let friends do stupid things. ........alone.

Offline Chryco Psycho

  • Administrator
  • C-C.com Guru
  • *****
  • Posts: 36620
  • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: Alignment changes
« Reply #8 on: August 20, 2013 - 09:53:17 PM »
the caster is the line drawn through the top & bottom ball joint looking at the side of the car , lowering the car will not change the distance between the 2 ball joints & will keep the angle virtually the same except that the upper arm is on an angled pivot moving the upper ball joint slightly rearward which can only help but I doubt it would change much at all moving it 1"

Challenger - You`ll wish You Hadn`t

Offline Aussie Challenger

  • Resident
  • *****
  • Posts: 3407
  • In Kansas loaded for Drive to West Coast.
Re: Alignment changes
« Reply #9 on: August 20, 2013 - 10:24:03 PM »

 Caster is effected if the front only is raised or lowered, the same if the rear is raised or lowered, in this case the front dropping decreases caster.
 The pic of my Challenger in my avatar shows that the rear is lower because of the excess weight in the rear and that increased the positive caster making my steering even lighter, raising the rear as some people do decreases caster making the steering heavier.
 I agree the Challengers need more positive caster for straight line stability, off set upper bushes help and so do after market upper control arms which have more caster built into the design of them.
Dave