Finally got my axle re-built and under the Runner this weekend.
I have installed Toyota rear leaf springs up front and bolted the axle to it and was wondering about the pinion angle.
Right now it is a hair over 0 degrees and I would like it to point up towards the t-case a little more. I was thinking 4 degrees, does anyone see a problem with putting this amount of shim in the front?
If you have rears up front, what if any degree shim did you used?
Thanks,

Tye

If you rotate your pinion up 4 degrees you will most likely have negative caster and your truck will be a handfull on the road. I would suggest cutting and turning the knuckles or getting a high pinion third member, but neither is easy or cheap.

You can shim it up to the limits of the steering caster angle:
- http://www.4crawler.com/4x4/ForSale/Shims.shtml#FAQ1

I run rears up front, with about a 1" longer-than-front-hanger-drop front shackle, high pinion 3rd and no shims:
- http://www.4crawler.com/4x4/4R_suspension-III.shtml#Front
Works fine.

Thanks for the replies <img src="/forums/images/graemlins/kewl.gif" alt="" />
I am not questioning either of you answers, just don't know myself, but right now with my pinion being at 0 degrees, shouldn't I be able to shim it at least to where it was (stock)without affecting the caster too much?
The reason the angle is off is because the spring perch on the axle is no longer mounted on the most bottom (arch) part of the spring. Wouldn't putting a shim in just make it so the actual mounting point is more level? It's a little hard to explain, but I have this vision in my head.
Another way to put it may be that, right now, isn't the degree of caster off in the oposite way of where it needs to be?
I am at work right now, otherwise I would measure the caster angle.
Thanks again,

Tye

I am going to try and add some pics. If it doesn't work, they can all be seen here: http://www.bomp-bomp.com/forum/view...amp;amp;postorder=asc&highlight=

That was the whole point of my post, yes you can shim it back to the (stock) limits of the steering caster angle:
- http://www.4crawler.com/4x4/4R_TechInfo.shtml#Steering

Basically restore the stock caster (and pinion) angle. However, if it drives fine now and you notice no major problems in 4WD, it may not be worth "fixing" it if it ain't broke.

Ive seen one other slight fix rather than use shims or used with shims. Put the spring center pin in the forward most hole on the axle perch. You might have 3 holes per side or just the one, it depends upon the truck. This results with the axle rearward about an inch and you might have to drill out the ubolt flip plate. So rather than having moved the axle forward 2" with rears up front you only get an inch. I guess it depends on why you wanted rears up front: for the articulation, approach angle, or are you just greedy and want both? <img src="/forums/images/graemlins/smile.gif" alt="" />

My .02
JT

Thanks,
I think I will try it out like it sits right now and mabey try the lowered front spring hanger next if needed.

Tye