I've bitten the bullet & drilled the holes... .I'll let you know how I go....
Lowering top arm on LJ
Started by
_jklumpp_
, Sep 28 2006 01:40 PM
71 replies to this topic
#27
_73LJWhiteSL_
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Posted 06 December 2006 - 10:56 PM
I will be watching with much interest jklumpp. 
Steve
Steve
#28
_jklumpp_
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Posted 06 January 2007 - 07:55 AM
Finally got around to uploading some pictures....
#29
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Posted 14 April 2007 - 11:41 PM
I just did this mod testerday and today, the holes looked a little thin on the edges so i added some weld to thicken it. Also did other mods.
#30
_lurkin308_
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Posted 15 April 2007 - 12:36 AM
i did this mod a few months backbut i did for ajustability and clearance reasons too
cheers caine
cheers caine
#31
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Posted 15 April 2007 - 01:23 AM
yep it gave me a fair bit more room for the manifolds.i did this mod a few months backbut i did for ajustability and clearance reasons too
cheers caine
#32
_73LJWhiteSL_
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Posted 15 April 2007 - 05:50 PM
Thanks very much mate.Finally got around to uploading some pictures....
Now it is 1" centre to centre correct?
Steve
#33
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Posted 15 April 2007 - 11:21 PM
I added some weld on the edges of the holes, custom suspension cross shaft/upper control arm mounted
My Webpage
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#34
_rorym_
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Posted 16 April 2007 - 12:42 AM
Should be Steve,..but thats a big 1"...but the rest is OK.Thanks very much mate.Finally got around to uploading some pictures....
Now it is 1" centre to centre correct?
Steve
R
#35
_jklumpp_
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Posted 16 April 2007 - 01:45 PM
Well 1" centre to centre is what I did.... but then I was told 5/8", and seemed to start a bit of a war with some saying 5/8", and others 1", and both sides categorically stating that they were correct & the others didn't know what they were talking about!! 
.... My front end was back in at this stage, so Idecided to run with it, and see how it goes... So far so good! Car drives & handles beautifully, and the desired wheel alignment setting where easily acheived, so I have no plans to change it at this point!
P.s. it's a good idea to make some spacer blocks to replace some shims... I think I made mine about 12mm thick...
.... My front end was back in at this stage, so Idecided to run with it, and see how it goes... So far so good! Car drives & handles beautifully, and the desired wheel alignment setting where easily acheived, so I have no plans to change it at this point!
P.s. it's a good idea to make some spacer blocks to replace some shims... I think I made mine about 12mm thick...
#36
_73LJWhiteSL_
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Posted 16 April 2007 - 03:16 PM
I've had people tell me 1/2" as well... If you've done it 1" then i will do that as well.
When i eventually rebuild the front end.
Steve
When i eventually rebuild the front end.
Steve
#37
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Posted 17 April 2007 - 12:07 AM
1/2 inch sounds about right as any more dosnt leave much meat near the holes, ie i welded it up to thicken it.
#38
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Posted 17 April 2007 - 12:15 AM
Not definitive but off the old forum:
Posted: Sat Apr 03, 2004 10:31 am Post subject:
Electra Blue
The suspension on the XU1 differs in that the mounting for the upper control arm is lowered on the crossmember. I don�t have the actual measurement but you are probably correct in calling it an inch.
There are two sets of bolt holes which indicate that the lower one was drilled somewhere along the production line.
The 1970 service bulletin notes as important the the upper control arm is always reinstalled in the lower mounting position.
I would confidently assume that it was for handling purposes.
From what I have read this mod can be carried out on any LC/LJ Torana
but I would check on that before you pull out the old Black and Decker and start drilling a few holes.
This was disccussed sometime ago on this BB with some pretty good and informantive information. Perhaps someone with Search capabilities could locate it and post a link.
Posted: Sun Apr 04, 2004 5:41 pm Post subject:
mounting the upper wishbone 1� lower will also give it a higher roll
center thus giving the car less body roll in the front.
and this i would say is the reasoning behined the revised mounting
position
Posted: Sat Apr 03, 2004 10:31 am Post subject:
Electra Blue
The suspension on the XU1 differs in that the mounting for the upper control arm is lowered on the crossmember. I don�t have the actual measurement but you are probably correct in calling it an inch.
There are two sets of bolt holes which indicate that the lower one was drilled somewhere along the production line.
The 1970 service bulletin notes as important the the upper control arm is always reinstalled in the lower mounting position.
I would confidently assume that it was for handling purposes.
From what I have read this mod can be carried out on any LC/LJ Torana
but I would check on that before you pull out the old Black and Decker and start drilling a few holes.
This was disccussed sometime ago on this BB with some pretty good and informantive information. Perhaps someone with Search capabilities could locate it and post a link.
Posted: Sun Apr 04, 2004 5:41 pm Post subject:
mounting the upper wishbone 1� lower will also give it a higher roll
center thus giving the car less body roll in the front.
and this i would say is the reasoning behined the revised mounting
position
#39
_jklumpp_
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Posted 17 April 2007 - 01:18 PM
Both Greg (82911) & Rory say 1"..... that's enough for me!
#40
_rorym_
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Posted 17 April 2007 - 02:40 PM
The XU1 release is in Viv Antonios book from GMH...It says 1"inch.
R
R
#41
_Bomber Watson_
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Posted 17 April 2007 - 08:12 PM
so whats the verdict boys?? woth doing?
#44
_Bomber Watson_
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Posted 18 April 2007 - 07:53 PM
oh fine i will. i'll biro it in for when im tweaking the front suspension.
#45
_73LJWhiteSL_
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Posted 19 April 2007 - 12:01 PM
Thats my plan as well, some paint, new bushes, new ball joints, and 4 new holes.
Steve
Steve
#46
Bazza
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Posted 19 April 2007 - 12:45 PM
Hi allThe XU1 release is in Viv Antonios book from GMH...It says 1"inch.
I don't seem to be able to find the reference to "1 inch" in the Antoniou book.
In my copy there are references to "front suspension modifications" and "relocating lower control arms" on pages 25 and 27 - but no reference to 1 inch.
Anybody?
Bazza
#47
limo
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Posted 19 April 2007 - 09:04 PM
why doesn't some just measure from top down to hole centre, I can do both XU1 and GTR or stocky but not till weekend
#48
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Posted 19 April 2007 - 11:07 PM
limowhy doesn't some just measure from top down to hole centre, I can do both XU1 and GTR or stocky but not till weekend
I would be interested to know the true centre to centre measurement for the XU-1. There are a number of people one these forums who know the correct measurement but are just not saying.
Bazza
#49
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Posted 19 April 2007 - 11:49 PM
Are you suggesting that the measurement isn't 1" Bazza?
And maybe the people that know don't want to say anything for the same reason imformation about the identifying markings of genuine cars is guarded?
Steve
And maybe the people that know don't want to say anything for the same reason imformation about the identifying markings of genuine cars is guarded?
Steve
#50
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Posted 21 April 2007 - 01:16 PM
Well that was an interesting exercise, all cars are LCs-- XU!, GTR and stocky 4dr
but unfortunately the front ends are still mounted, no motors
tried about 8 different points of referrence, problems due to wheel align shims and welding pionts but the diff is not "1 inch"
variation between 15 and 20mm lower when calculated from readings between XU1 and others, so disregarded most and used 3 pts to measure
seemed most accurate and easiest to get at
variation 16.1 to 17.5 mm, hard to get vernier in and in line
will be dismantling the GTR and XU1 fronts soon so can get at the holes directly and get better measurement
I would expect the measurement to be 11/16" but could be 5/8" as someone suggested but not 1"
but unfortunately the front ends are still mounted, no motors
tried about 8 different points of referrence, problems due to wheel align shims and welding pionts but the diff is not "1 inch"
variation between 15 and 20mm lower when calculated from readings between XU1 and others, so disregarded most and used 3 pts to measure
seemed most accurate and easiest to get at
variation 16.1 to 17.5 mm, hard to get vernier in and in line
will be dismantling the GTR and XU1 fronts soon so can get at the holes directly and get better measurement
I would expect the measurement to be 11/16" but could be 5/8" as someone suggested but not 1"
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