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New lower control arm bushes


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#1 _HRV74_

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Posted 15 January 2009 - 09:01 PM

Hi Guys
I have new lower control arm bushes on the front (less than 1000km's old), and one has parted ways with the control arm already!
They were fitted by a good mechanic, and were nice and tight when fitted. These are rubber, not Nolathane.
Has anyone ever had experience with this type of thing before? How common is it?!

Thanks
Harve

PS: Not the clearest of pics, taken with the mob phone.

Posted Image

#2 dattoman

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Posted 15 January 2009 - 09:06 PM

Maybe your hole is too big

You know... sausage down a hallway

#3 _rorym_

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Posted 15 January 2009 - 09:15 PM

Common on older cars...I spot weld mine to hold them...you need a bucket handy though...rubber and nolathene with heat burns really quick.
R

#4 TerrA LX

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Posted 15 January 2009 - 09:31 PM

That looks like the wishbone is cracked.

#5 _HRV74_

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Posted 15 January 2009 - 09:39 PM

Thanks guys. There's no cracks from what we saw up close.
Thanks for the tip Rory, good to know that this can be prevented in the future.

Cheers
H

#6 _SS Hatchback_

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Posted 15 January 2009 - 09:45 PM

Gday Harve , you sure its not cracked where you cant see it , going by the pic it seems like ti may be cracked on the top side because it seems like the hole is elongated or maybe its just my eyes

#7 rodomo

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Posted 15 January 2009 - 09:54 PM

I thought that too at first.
It looks like the bush has moved out of the arm and the arm has moved up past the end of the bush (if that makes sense?)

#8 _HRV74_

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Posted 15 January 2009 - 10:20 PM

Thanks guys, interesting. From looking at the pic I know what you mean (yeah it makes sense rodomo).
Will get it pulled apart and looked at properly (by someone with much more of a clue than myself) in the next few days.

Cheers
H

#9 fuzzypumper

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Posted 16 January 2009 - 12:24 AM

Yeah 2 of mine did that many years ago, just pushed them back in and spot welded like Rorym. They havent moved since.

But the wishbone holes may still be cracked.

Edited by fuzzypumper, 16 January 2009 - 12:26 AM.


#10 _ass308_

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Posted 16 January 2009 - 06:10 AM

bugger.i will be keen to see the out come.

#11 _SS Hatchback_

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Posted 16 January 2009 - 08:59 AM

when i first looked at the pic i thought the bush was still protruding the hole but now it does kind of look like it has moved in then the arm has just dropped, my nolathane ones are welded in

Edited by SS Hatchback, 16 January 2009 - 09:00 AM.


#12 _82911_

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Posted 19 January 2009 - 04:49 PM

With rubber bushes, make sure you get all the weight of the car on them at ride height BEFORE you tighten them up.This is because the rubber bushes are bonded to BOTH the crush tube anfd the outer shell of the bush. They pivot by putting a twist in the rubber.
This is not necessary with urethane bushings as the crush tube pivots inside the urethane bush.
It looks to me like the bushes were torqued up with the suspension at full droop (on a hoist)
As for welding.... Just a tack or 3 ok!


Cheers Greg..

#13 _rorym_

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Posted 19 January 2009 - 05:40 PM

Sorry..Greg is right..meant to say that..I just spot weld on 2 sides to hold it...not a full round weld.
R

#14 _HRV74_

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Posted 19 January 2009 - 07:01 PM

New bush fitted, and spot welded in place, should be fine for a while
(Forgot the camera, so it's another mob phone job):
Posted Image

However, I'm told that the control arms aren't perfect, and should be replaced to avoid dramas down the track. There were no cracks or anything nasty though.
Not even Rare Spares sell replacement arms these days (they used to sell reconditioned items that were painted in 2-pack and fitted with new bushes and ball joints).

Cheers
H

#15 76lxhatch

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Posted 19 January 2009 - 08:11 PM

I'm sure I read somewhere that the bushes don't line up exactly with the pivot points on the factory arms and this was deliberate for some reason, hence the requirement for a softer bush. What's wrong with your arms, are they a bit twisted or something?

#16 Statler

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Posted 19 January 2009 - 09:11 PM

I think Pedders are selling reco control arms now!

#17 _rorym_

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Posted 19 January 2009 - 09:39 PM

I think Pedders are selling reco control arms now!


I would run away......
R

#18 fuzzypumper

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Posted 19 January 2009 - 09:41 PM

I believe the pivots should not line up deliberately. It creates a binding effect that stops the front from diving under braking.

#19 76lxhatch

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Posted 20 January 2009 - 06:56 AM

That's it fuzzypumper, I knew I'd read it somewhere

#20 _82911_

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Posted 20 January 2009 - 04:59 PM

I have to comment on the bushes being set up deliberately with a bind in them to help with anti-dive.
That's rubbish...rubbish..... rubbish..
The only time that a bush is pulled out of alignment is if the geometry settings are altered from factory, like adding castor or camber.
If you want anti dive geometry it can be modified into the design,BUT you don't do it by binding up a bush.

Probably fall on deaf ears though, as i swear some of you blokes don't read 1/2 the stuff i post.
Buggered if i think i should bother. :banghead:

#21 makka

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Posted 20 January 2009 - 05:05 PM

I have to comment on the bushes being set up deliberately with a bind in them to help with anti-dive.
That's rubbish...rubbish..... rubbish..
The only time that a bush is pulled out of alignment is if the geometry settings are altered from factory, like adding castor or camber.
If you want anti dive geometry it can be modified into the design,BUT you don't do it by binding up a bush.

Probably fall on deaf ears though, as i swear some of you blokes don't read 1/2 the stuff i post.
Buggered if i think i should bother. :banghead:



and some of us read everything you post to make up for the others :clap:

#22 ls2lxhatch

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Posted 20 January 2009 - 06:03 PM

I have to comment on the bushes being set up deliberately with a bind in them to help with anti-dive.
That's rubbish...rubbish..... rubbish..
The only time that a bush is pulled out of alignment is if the geometry settings are altered from factory, like adding castor or camber.
If you want anti dive geometry it can be modified into the design,BUT you don't do it by binding up a bush.


It appears to be a common misconception.

http://www.cardomain.com/ride/480776/3
This used to be done to introduce anti-dive into the front end for when you are braking.


Why are the bushes out of alignment and should you realign the bushes?

#23 76lxhatch

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Posted 20 January 2009 - 06:09 PM

I have to comment on the bushes being set up deliberately with a bind in them to help with anti-dive.
That's rubbish...rubbish..... rubbish..
The only time that a bush is pulled out of alignment is if the geometry settings are altered from factory, like adding castor or camber.
If you want anti dive geometry it can be modified into the design,BUT you don't do it by binding up a bush.

Probably fall on deaf ears though, as i swear some of you blokes don't read 1/2 the stuff i post.
Buggered if i think i should bother. :banghead:

I read it but never bothered about whether it was right or not because I'm happy to just accept them as they are. I'm also happy to believe what you say based on your previous posts here.

Changing the camber or caster using the wheel alignment shims wouldn't introduce bind, would it? If it did wouldn't we need need major surgery to fix it?

#24 _82911_

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Posted 20 January 2009 - 07:42 PM

Will explain all, later tonight. Moving house at the moment..
thanks for the vote makka... :spoton:

#25 _2ELCS_

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Posted 20 January 2009 - 08:49 PM

Keep posting Greg. Its ones like yours that get those rusty old wheels turning in my brain.
Wayne.
ps i would like to have a chat one day if possible ?




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