Join Date: Dec 2003
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Re: Help...Need proper ubolt size for a Toy front axle
I got my u-bolts and top plates from the wrecking yard. They yare off of a full size Ford truck if I rememeber right. Anyway, just about anything off of an axle with the same diameter will work. The trouble is that if you use castor shims (and unless you cut and rotate the knuckles you really need to use shims) your u-bolts don't align with the holes in the top plates too well. You can off-set the centering pin hole whatever amount is required to compensate for the "drift" caused by the shims (the best idea) or you can tweak the u-bolts a little, oblong the wholes a little, and wrestle them into place (not the best idea, but that's the way I did it the first time around).
If you have an early axle (79/83) there is no truss in your way so it make the drivers side easier and you can use rounded bolts. On the passenger side inner u-bolt, you won't be able to tweak things much. I would see if your top plates are large enough so that you can put your u-bolts on like they want to go, place them over the bolts, locate where the cenetring pin needs to be, and drill a hole there (rather than in the center of the top plate). You will probably have to oblong the holes a little if you have shims, but that way works the best.
Clear as mud??