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Adj Trailing Arms
Started by
_ChevLX_77_
, Apr 19 2007 11:56 AM
14 replies to this topic
#1
_ChevLX_77_
_ChevLX_77_
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Posted 19 April 2007 - 11:56 AM
Hi guys im thinking that if i whack a set of those Mcdonald Bros Racing Adjustable trailing arms in my car it may just fix the problem with the pinion angle on my salisbury. My question is, Has any one on the forum used these trailing arms. Are they good, bad, need modification etc. Please help i dont want to spend the money to find out that it worse than when i started. (im only a 1st year mechanic )
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#2
_rorym_
_rorym_
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Posted 19 April 2007 - 12:05 PM
My first question is why do you have a pinion angle problem with your salisbury in the first place?..They were a GMH fitment.
R
R
#3
_ChevLX_77_
_ChevLX_77_
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Posted 19 April 2007 - 12:07 PM
Oh yeah forgot to mention. The diff is in an LX not UC. Car does not have UC floor pan and is a four door. if that helps.
#4
ls2lxhatch
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Posted 19 April 2007 - 02:00 PM
Only the upper McDonald Bros trailing arms are adjustable. You could try modifying a standard set of arms to see if it solves the problem and then buy the McDonald Bros arms. Whiteline make adjustable lower arms, they do not look as strong as the Mcdonald Bros arms.
Another option to consider is replacing the LX upper arm mounts with the upper arm mounts from a UC and use the standard UC arms.
Another option to consider is replacing the LX upper arm mounts with the upper arm mounts from a UC and use the standard UC arms.
#5
_ChevLX_77_
_ChevLX_77_
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Posted 19 April 2007 - 03:54 PM
Yeah i was only get the top ones as it only has to be adjusted a few degress. i think i will go with the adjustables. for the sake of it being eaiser and someone already makes etc. tahnks for all your input 
#6
_ChiaLX_
_ChiaLX_
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Posted 19 April 2007 - 04:48 PM
I have a set on my car and can recommend them quality wise.
The give quite a bit of adjustment to play with. I had to press the bushes in the ends myself though as these were only given in a packet.
I bought em cos i wasnt happy with the angle my nine inch was sitting at, and still want to adjust them a little more on a hoist.
The give quite a bit of adjustment to play with. I had to press the bushes in the ends myself though as these were only given in a packet.
I bought em cos i wasnt happy with the angle my nine inch was sitting at, and still want to adjust them a little more on a hoist.
#7
_rorym_
_rorym_
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Posted 19 April 2007 - 05:37 PM
For the cost...have you considered just doing the boot floor if thats the obstacle?
R
R
#8
_Chamois hatch_
_Chamois hatch_
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Posted 19 April 2007 - 05:52 PM
i wonder how much they wiegh, comparing to standard arms, im putting my UC on a diet, but i want it to be (mostly) street legal. any one know the weight of standard arms and the McDonald Bros trailing arms, both uppers and lowers?
time for some research i think, rory you would want to keep your race car as lite as possible as well.
time for some research i think, rory you would want to keep your race car as lite as possible as well.
#9
_Bomber Watson_
_Bomber Watson_
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Posted 19 April 2007 - 06:16 PM
i just put some in an lj, i didnt actualy weigh them but there fairly close to teh same weight, perhaps the maccy bros lowers were a tiny bit lighter and the uppers a bit heavyer.
#10
ls2lxhatch
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Posted 19 April 2007 - 07:07 PM
I can weight my McDonald Bros arms with super pro bushes tonight. I do not have a standard set of arms to weigh.i wonder how much they weigh, comparing to standard arms, im putting my UC on a diet, but i want it to be (mostly) street legal. any one know the weight of standard arms and the McDonald Bros trailing arms, both uppers and lowers?
time for some research i think, rory you would want to keep your race car as lite as possible as well.
The McDonald Bros arms will be heavier than the standard arms, particularly the uppers.
#11
TORLX8
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Posted 19 April 2007 - 07:43 PM
I bought some adjustable upper trailing arms and tubular lowers from Rod Tech here in Adelaide.
They look very similar to the McDonald Bros ones but are much cheaper.
They look very similar to the McDonald Bros ones but are much cheaper.
#12
_Chamois hatch_
_Chamois hatch_
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Posted 19 April 2007 - 07:47 PM
well there you go, weight them anyway if you could. just for curiosity sake.
also any ideas on how they compare to boxed trailing arms, ie strength?
cheers
also any ideas on how they compare to boxed trailing arms, ie strength?
cheers
#13
_ChevLX_77_
_ChevLX_77_
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Posted 19 April 2007 - 08:04 PM
I bought some adjustable upper trailing arms and tubular lowers from Rod Tech here in Adelaide.
They look very similar to the McDonald Bros ones but are much cheaper.
Have you got a website for rod tech.
#15
ls2lxhatch
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Posted 19 April 2007 - 08:41 PM
I just realised that my trailing arms are at the workshop with my shell, I will not be able to weigh them until Saturday.
I would expect a steel tube to be stronger than a plated pressed arm if they both had the same quality steel and weighed the same.
I would expect a steel tube to be stronger than a plated pressed arm if they both had the same quality steel and weighed the same.
Edited by ls2lxhatch, 19 April 2007 - 08:44 PM.
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