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Front end alignment question #2656795
05/19/19 10:10 AM
05/19/19 10:10 AM
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440mopar Offline OP
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In all the years I have been driving and throughout all of the many cars I have owned I have never had to have a front end alignment done. Now however, I do on my GTX but I am not familiar with how an alignment is actually done. My car currently has drum brakes on it but I plan on converting to disks at some point this summer. My question is, if I were to get an alignment done now as the car currently sits with the drum brakes, would I have to have it aligned again after doing the disk brake swap or would swapping out the brake assemblies have no bearing on the alignment?

Re: Front end alignment question [Re: 440mopar] #2656819
05/19/19 10:43 AM
05/19/19 10:43 AM
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Sniper Offline
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Depends

If your disc kit uses the existing spindles, no additional alignment needed.

If you must replace the spindles you should have the alignment checked and have it adjusted as necessary.

Re: Front end alignment question [Re: 440mopar] #2656821
05/19/19 10:51 AM
05/19/19 10:51 AM
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moparx Offline
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it is always advisable to get alignment after replacing front end parts. remember, these cars were never even close when it came to production tolerances to start with, so if you swap spindles to the later, taller, style [F,M,J body] that will certainly alter your current settings.
if it were me, i would swap to your discs now, then get it aligned.
i don't know what you have decided on discs yet, but don't fall for the 73-76 A-body "is the only setup to use" story. the later, [3/8" taller] F,M,J body spindles WON'T cause alignment problems or overextend the upper ball joint, causing failure. if you are using an aftermarket kit, i would check the master cylinder size so you get the correct size for your intended use. our good DR. DIFF will set you up with an outstanding kit with the CORRECT size master, so if you have nothing now, contact him first !
just my experience and opinion from playing with this junk since 1959. your mileage may vary.......
beer

Re: Front end alignment question [Re: 440mopar] #2656824
05/19/19 10:56 AM
05/19/19 10:56 AM
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Andrewh Offline
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alignments are usually "warrantied" for 6 months or a year.

firestone still offers a lifetime alignment.

I usually do this for all my cars and just have them checked once a year, or when I change out parts.

Re: Front end alignment question [Re: Andrewh] #2656826
05/19/19 11:09 AM
05/19/19 11:09 AM
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Crook County, ILL
Mastershake340 Online content
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Getting an alignment on a vintage car it is often not easy to find a shop who can do it now.
Mechanics who have old school knowledge on 40 to 50 year old front ends are becoming scarce, and some alignment racks won’t even work with a vintage car.

Re: Front end alignment question [Re: Mastershake340] #2656875
05/19/19 01:24 PM
05/19/19 01:24 PM
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RapidRobert Online content
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As said find a guy who knows our cars & slip him a twenty to accomodate your requests. set the ride height to where you want it first ahead of time (some shops set it too low), to where your particular rims/tires look good to you in the front wheelwell. 1/2 tank of gas/tires aired up/your weight in barbells in the pass seat & have him pull em over to the drivers side after he drives it on the rack. Some alignment machines automatically compensate for drivers weight so talk to him about this (the twenty will help with this). As much positive caster as he can get & the offset bushings ahead of time are generally a good plan. a skosh (1/4 deg iirc) of neg camber & 1/16" toe in. When done my dart just floated down the road.

678-001.jpg

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Re: Front end alignment question [Re: moparx] #2657072
05/19/19 10:40 PM
05/19/19 10:40 PM
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Originally Posted by moparx
since 1959.

Wow that's the year I was born.
beer
I thought I was old. grin


I have mechanical Aptitude.
I can screw up anything.
Re: Front end alignment question [Re: 440mopar] #2657143
05/20/19 08:54 AM
05/20/19 08:54 AM
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Benton, IL.
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DaveRS23 Offline
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I just want to re-enforce what has already been said about finding a tech that is experienced with our Mopars. Most techs that say they are familiar with older cars are actually familiar with other brands of older cars and are used to dealing with shims rather that our adjustments which are free floating.


KOS
Re: Front end alignment question [Re: DaveRS23] #2657182
05/20/19 10:48 AM
05/20/19 10:48 AM
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moparx Offline
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"older cars", meaning fox body rustangs ? biggrin
beer

Re: Front end alignment question [Re: moparx] #2657262
05/20/19 04:15 PM
05/20/19 04:15 PM
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Sniper Offline
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Might be easier to just buy the alignment tools and teach yourself than deal with a series of alignment places that can;t align worth beans.

Ran into that years ago, ended up going to the dealer to get my not yet 10 year old 87 Diplomat aligned and they failed too.

Re: Front end alignment question [Re: Sniper] #2657276
05/20/19 05:14 PM
05/20/19 05:14 PM
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Lincoln Nebraska
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RapidRobert Online content
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^^^ & there are some utube vids that will help you out. Once you set the ride height to where you want it & the cams turned for max caster then bring em out for camber then toe in & iirc toe in comes first


live every 24 hour block of time like it's your last day on earth
Re: Front end alignment question [Re: RapidRobert] #2657502
05/21/19 11:11 AM
05/21/19 11:11 AM
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moparx Offline
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RR, toe is done last. caster, camber, then recheck caster. you will probably have to go back and forth with both until you get it as good as you can get it, as adjusting one will affect the other to some degree. add or adjust what you want to compensate for road crown. then do your toe, as toe doesn't affect either, but it's possible the others will affect toe, especially if caster is way off, because the lower balljoint will raise and lower the outer tierod connection. think bump steer.
that is the way i do it. your mileage may vary.
beer

Re: Front end alignment question [Re: moparx] #2657509
05/21/19 11:22 AM
05/21/19 11:22 AM
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Lincoln Nebraska
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RapidRobert Online content
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^^^ Noted, thank you!


live every 24 hour block of time like it's your last day on earth

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