Alignment Castor question??? - Ford Powerstroke Diesel Forum
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Old 08-27-2010, 12:50 PM
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Alignment Castor question???

I recently had my truck aligned and I got a printout of the final specs. I am curious as to where the castor should be on my truck. I am currently running a procomp 8" lift with 37s on my 2006. Also what can be used to fix the castor. Alignment cams?? Thanks


Printout



Here's what the upper ball joints look like know cam wise.

Drivers



Pass


Last edited by villestrip; 08-27-2010 at 01:46 PM.
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Old 08-27-2010, 01:15 PM
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So according to more looking around it look like I should have around 3.5 to 3.7 degrees of positive castor. Does that sound right? So I need 2.5 on the drivers side and 1 degree on the passenger side. So that being said if thats right would these work.

SPC Application Search - Product

23212 on the drivers side and 23224 on the passenger side.
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Old 08-28-2010, 01:57 PM
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Anyone????
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Old 08-28-2010, 04:10 PM
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more pos caster helps in returning the wheel to center. i like to see caster on anything a max of .2 diff between the sides. also is a non-wear setting so if it is off its no biggie because it will not wear out your tires
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Old 08-29-2010, 05:53 AM
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You have what looks like a aftermarket bushing on one side and a factory bushing on the other. You cant just add to the ones you have. You are suppose to start with a 0 bushing on bothe sides and then adjust it to spec. That being said i would installe 2 of These Moog adjustable bushings set to 0 on both adjustments then bring it back to your alignment guy and tell him to set it to spec. If it was me i would set the right side caster at the max you can get and the left side .3 to .5 less to compensate for road crown. Too much caster is not a problem and will not cause any negative driving problems.
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Old 08-29-2010, 09:46 AM
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Ok thanks. So do I want to get the castor around 3.5 or higher. Its lifted 8 inches by the way. Thanks
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Old 08-29-2010, 06:02 PM
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More caster means more stable at high speed. SO i would go as high as it can be.
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Old 08-30-2010, 05:44 AM
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Quote:
Originally Posted by nevrnf View Post
You have what looks like a aftermarket bushing on one side and a factory bushing on the other. You cant just add to the ones you have. You are suppose to start with a 0 bushing on bothe sides and then adjust it to spec. That being said i would installe 2 of These Moog adjustable bushings set to 0 on both adjustments then bring it back to your alignment guy and tell him to set it to spec. If it was me i would set the right side caster at the max you can get and the left side .3 to .5 less to compensate for road crown. Too much caster is not a problem and will not cause any negative driving problems.
I noticed that too and wondered why given the numbers posted above. I personally don't think the 3.5-3.7 is enough. I have mine set at 4.5 with toe set to 0. The above post seems backwards on the left and right to me. I always thought that left was the drivers side. If that is correct then it is the passenger side you want to dial a little less caster for road crown IIRC.

Quote:
Originally Posted by nevrnf View Post
More caster means more stable at high speed. SO i would go as high as it can be.
Agreed and it will not tend to wander as much with more caster in it. I would dial in the max you can get and work from there.
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Old 08-30-2010, 12:46 PM
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So should i just order the Icon alignment cams that add 2.5 degrees and just put those in place of the cams I have now?
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Old 08-30-2010, 04:04 PM
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Are your cams stock? if so their aprox 0-.04* so adding 2.5* cams will get you colser to whats needed. Best IMO is adjustable 4 link arms..the better ride quality is a added bonus. We have both..PM if we can help.

Cary
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