Setting Unlimited Pro Rock Caster

HazMatJK

HazMatJK

New member
I need to check and set the caster on my unlimited pro rock as I have installed new Currie upper and lower arms.20170625_093355.jpg

Do I have to measure off the pinion flange or can I go off the flat part on the top of the PR housing per the attached picture?

Thanks!!



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HazMatJK said:
I need to check and set the caster on my unlimited pro rock as I have installed new Currie upper and lower arms.View attachment 265195

Do I have to measure off the pinion flange or can I go off the flat part on the top of the PR housing per the attached picture?

Thanks!!



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Click to expand...

Don't know about the top of the housing as shown but the pinion yoke will be accurate for sure.


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with the PR44 Unlimited having built in Caster what degree of caster should you be looking at achieving?
 
M_Savage said:
with the PR44 Unlimited having built in Caster what degree of caster should you be looking at achieving?
Click to expand...

6 to 6.5 is pretty typical. It's more about have an optimum pinion angle with the aftermarket axle. What are you getting a reading of now?

adsf.jpg
 
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Drive shaft lines up much better with the transfer case now, and the bump stop pads on the axle line up and touch the bump stops evenly when stuffed.

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M_Savage said:
with the PR44 Unlimited having built in Caster what degree of caster should you be looking at achieving?
Click to expand...

I think I ended up with about 5 and 5. As stated, main consideration is eliminating the angle in your driveshaft. Caster will follow from that. Stock caster is 4.2 degrees. Unless you have some crazy high lift, you should easily be able to get your DS straight and still have 4.2 degrees or more for caster with the PR44 Unlimited.


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