need bigger castor and shims but not sure what to get - Ford Powerstroke Diesel Forum
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Old 03-10-2013, 06:29 PM
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need bigger castor and shims but not sure what to get

Alrighty, im having some alignment issues and im being told i need bigger castors and shims to get where i need to be. I took the picture below at the alignment shop so i could post it up here. As you can see, my right side is frigged up big time. my left side is almost perfect. yes, the truck at one point was wrecked but everything was replaced 100%. tell me what yall think i need to do as far as shims and castors go!

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Old 03-11-2013, 11:21 AM
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Check your ball joints, I got one phone call stating that I needed caster shims, then another correcting himself that the ball joints on that side were bad.
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Old 03-11-2013, 11:28 AM
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Agreed.. check your ball joints but your castor in ideal conditions should be around 5* positive. I know this is OVER ford specs but u will be happy u did. I think u can get these shims from SPX? but let me see if i can dig u a pic. ICON sells them also. Contact Cary at CT Performance and he should be. Able to get them for ya.

EDIT..... SPC is the name.

Last edited by ol_Blue97; 03-11-2013 at 11:35 AM.
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Old 03-11-2013, 02:52 PM
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Didn't the RC lift come with either new Radius arms or drop brackets to correct the Castor?

But best fix 4 link arms and adjust Castor to 4.5-5*

We have whats needed.

cary
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Old 03-11-2013, 07:06 PM
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He is my buddy and were trying to get this figured out. Yes his does have radius arm drop. Brackets but its a 4" lift with 2" spacers. So that's prolly why the drops aren't fixing it all the way. The problem is, we can't find anywhere that knows how to align these trucks. My castor isn't right either but mine are wearing fine. I don't have castor shims at all. He has castor shims and no one knows how to adjust them and all that. When he bought the truck, the tire was leaning in. So I spun the castor shim to straighten out the tire in hopes of saving the tire but its pulling still and they say that it needs more castor. Only thing I can think is to take the spacers out and see if that and taking the castor shims out helps it after getting it aligned. . But Im just guessing.

And I think his driver side upper ball joint is bad and that's not even the tire that's bad. It's got a wiggle that we noticed rotating his tires and the ball joint nut and castor shim is tight so I don't know.
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Old 03-12-2013, 08:37 AM
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If you can't do it yourself take it to the dealer..their techs should be able to align a truck...it isn't hard at all.
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Old 03-12-2013, 09:08 AM
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will they know what to do about the castor shims?
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Old 03-12-2013, 09:09 AM
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If they don't their Idiots.
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Old 03-12-2013, 09:14 AM
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well thats all we have around here lol. we asked tire discounters the first time about castor shims and they said they have never heard of them
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Old 03-14-2013, 07:02 PM
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I need castor shims as well after I installed the 2" pucks. How do I know which shims I need?
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