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Shims in UC front end
Started by
_52chevy_
, Apr 27 2010 04:27 PM
5 replies to this topic
#1
_52chevy_
_52chevy_
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Posted 27 April 2010 - 04:27 PM
Hi ,Ive put a UC front end into my 52 Chev.My problem is I pulled it all to bits and now I dont know how many shims to install in the exact position from where they were.Can someone out they help me ,just looking for a place to start.
#2
_cruiza_
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Posted 27 April 2010 - 04:57 PM
the shims are there to allow for variations in front end setuos wieght of car and wheel sizes etc not to mention tolerances in manufacture
take it to a wheel alighnment shop with your shims and that is what they will use to setup the wheel alighment of your car
take it to a wheel alighnment shop with your shims and that is what they will use to setup the wheel alighment of your car
#3
_UCV80_
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Posted 27 April 2010 - 06:04 PM
I recommend Pedders over other wheel alignment places. Don't take it to a tyre shop. There is usually 2 shims per corner but they will all be different thicknesses.
#4
View GaragePosted 27 April 2010 - 08:01 PM
Grab whatever measuring equipment you have and do your own wheel alignment in the driveway to get a starting point, if you're lucky/accurate it might save you getting charged extra over the normal rate for the wheel alignment guy to swear at the shims for you! If I remember correctly (and I probably don't, my manual has been 'borrowed') 60 thou worth of shim difference between front and back equates to half a degree of caster, and it would be more than that for camber. We can't really give a starting point because the ride height, individual front ends (not to mention different vehicle) all affect it so you just need to start measuring.
For the proper wheel alignment go anywhere that has decent equipment where they will let you watch and tell them the specs, don't accept their idea (or out of date computer specs) on what the alignment should be.
edit: Oh and another money/time saving thing is to document the number and thickness of shims you have installed so you know what to add/remove when you take it for the alignment
For the proper wheel alignment go anywhere that has decent equipment where they will let you watch and tell them the specs, don't accept their idea (or out of date computer specs) on what the alignment should be.
edit: Oh and another money/time saving thing is to document the number and thickness of shims you have installed so you know what to add/remove when you take it for the alignment
Edited by 76lxhatch, 27 April 2010 - 08:02 PM.
#5
fuzzypumper
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Posted 27 April 2010 - 08:41 PM
On my frontend, with my the arms basically horizontal, I stuck in about 2 thick shims per bolt initially.
I wouldnt be too concerned with whether you get the caster exact, but use acouple of spirit levels on the rims
to get the camber in the ballpark.
More importantly after that is the Toe adjustment, because you could wear out a tyre before you even make it to the
wheel aligner.
I wouldnt be too concerned with whether you get the caster exact, but use acouple of spirit levels on the rims
to get the camber in the ballpark.
More importantly after that is the Toe adjustment, because you could wear out a tyre before you even make it to the
wheel aligner.
#6
_robrenjus_
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Posted 27 April 2010 - 10:51 PM
+1 .spirit levels are definetly the go for camber but thats not that critical (for the camber to be out enough to cause issues you would be able to see it just by looking at the lean on the wheel),what is critical is the toe in/out you should try to get this as close as possible to straight ahead as possible , i have had blokes chew the hell out of a set of new front tyres within a short distance simply by being lazy.and i dont necessarily agree with the pedders comment i used to fix their wheel alignments all the time ,it depends on the operater and the quality of the alignment machine.ANY DECENT MOB WILL LET YOU WATCH THEIR WORK AN TAKE YOU THROUGH THE ADJUSTMENT PROCESS
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