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05-19-2010, 02:39 PM
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CC Member
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Join Date: May 2010
Location: charlotte nc,
nc
Cobra Make, Engine: contemporary #3072 , 390 big block, red no stripe
Posts: 18
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Not Ranked
broken rear control arm..help
yes thats right 4th ride in our new cobra and the rear driver side control arm cracked is and making the wheel rub ever so slightly on the body.the wheel is about 1 inch forward.. where do i get a new one or do i have it reworked? the car has a jag rear end. are the control arms jag or cc? i need help bad....thanks..
Last edited by seeda; 05-19-2010 at 02:43 PM..
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05-19-2010, 02:54 PM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Not Ranked
http://www.cwiinc.com/
Ask for Mike and tell him exactly the series rear you have and measurements of your control arm.
DO NOT drive it like that.
__________________
Chas.
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05-19-2010, 04:33 PM
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Senior Club Cobra Member
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Join Date: May 2007
Location: Mesa,
AZ
Cobra Make, Engine: Contemporary Classic, 428 FE CCX 3069
Posts: 7,506
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Not Ranked
The control arms are Jaguar series ? XKE. Mine are series I but I guess some others have different configurations. If Charles' info doesn't work, try XK's Unlimited. THey've always had everything I needed or knew where I could find it. http://www.xks.com/
And to quote a famous Cobra driver, "DO NOT drive it like that!"
__________________
Dan in Arizona
CCX3209
"It's a great car and I love it, but it doesn't do 'SLOW' very well."
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05-19-2010, 04:47 PM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Not Ranked
Quote:
Originally Posted by Danr55
And to quote a famous Cobra driver, "DO NOT drive it like that!"
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If you mean me-why, thank you Dan... 
__________________
Chas.
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05-19-2010, 06:23 PM
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CC Member
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Join Date: May 2010
Location: charlotte nc,
nc
Cobra Make, Engine: contemporary #3072 , 390 big block, red no stripe
Posts: 18
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Not Ranked
THANKS...yea i pulled over and called a dust pan to pick us up. thanks for the info. i will post pictures tonight. the crack is from 10 to 7 on the tube it did not break all the way around. is it normal for a crack to cause such a large shift in the wheel? it pulled almost one inch forward. has anybody else had this happen? again thank you all so much for the help.
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05-19-2010, 08:10 PM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Quote:
Originally Posted by seeda
THANKS.. is it normal for a crack to cause such a large shift in the wheel? it pulled almost one inch forward. has anybody else had this happen? again thank you all so much for the help.
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Ask Mike at CWI.
__________________
Chas.
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05-19-2010, 08:39 PM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
They don't usually run control arms on the Jag rear ends in CCX's. It's either a Watts linkage or nothing. A control arm would have to be looong on these to not break. Some of the early cars (looks like your # is early) tried a control arm that didn't work and they discontinued it.
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05-20-2010, 04:09 AM
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CC Member
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Join Date: Mar 2001
Location: E BRUNSWICK N.J. USA,
Posts: 3,841
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Don't drive and replace both arms
seeda This is the 3 or 4th car I have seen or heard about having lower control arms breaking. The welding was not right. 2 I have seen, the welds where not deep enought between the tube and mounting support. 1 the lower tube crack along the bottom, and the other snapped off a mounting point at the hub.
CWI has billet rear control arms if you want some flash. They also just came out with a tube arm that has toe adjustments and weights about 1/2 of what the old arm weights.
Replaced both arms and have happy drives. Rick L.
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05-20-2010, 07:13 AM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Quote:
Originally Posted by mickmate
They don't usually run control arms on the Jag rear ends in CCX's. It's either a Watts linkage or nothing. A control arm would have to be looong on these to not break. Some of the early cars (looks like your # is early) tried a control arm that didn't work and they discontinued it.
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Mick, I think you mean "trailing arm". The reference here I believe, is the link under the halfshaft, connecting the diff bracket and the hub carrier.
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Chas.
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05-20-2010, 07:22 AM
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CC Member
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Join Date: Nov 2003
Location: New Britain,
CT
Cobra Make, Engine: Size 10 Feet
Posts: 3,014
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This is the way we do it - and we are able to use a trailing arm!
Trailing arm modifications |
05-20-2010, 07:30 AM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
I was looking at his early number and thinking it was a trailing arm or radius rod issue. If the lower control arm has cracked it may well be a modified (shotened) arm that has issues. The E-type width ones started to get hard to find so they were chopping them down from XJ6 or whatever. The only way to shorten those arms is the right way like ERA does it. These guys have all given good advice and understand if that breaks the suspension collapses with horrendous results. I have an original E-type lower control arm here if that will help you.
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05-20-2010, 10:11 AM
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CC Member
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Join Date: May 2010
Location: charlotte nc,
nc
Cobra Make, Engine: contemporary #3072 , 390 big block, red no stripe
Posts: 18
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Not Ranked
a big thanks to you all for the words of wisdom. i really was stressed about this but you all have calmed me down. all of the links have been helpful and a will be ordering a new set of control arms today. thanks again.
regards
max
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05-20-2010, 10:35 AM
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CC Member
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Join Date: Jan 2004
Location: Wayne,
NJ
Cobra Make, Engine: Contemporary 482 all aluminum Tunnelport Self built and owned since 1980 frame#0000017 and owner of frame CCX 33961 looking for an FIA body to go with it
Posts: 431
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Not Ranked
 JustCobras.com has really nice ones. If you want to upgrade and never worry about this happening again. 
__________________
Cobrarich
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05-20-2010, 10:39 AM
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CC Member
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Join Date: Jan 2004
Location: Wayne,
NJ
Cobra Make, Engine: Contemporary 482 all aluminum Tunnelport Self built and owned since 1980 frame#0000017 and owner of frame CCX 33961 looking for an FIA body to go with it
Posts: 431
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Not Ranked
__________________
Cobrarich
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05-21-2010, 06:14 PM
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Senior Club Cobra Member
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Join Date: May 2007
Location: Mesa,
AZ
Cobra Make, Engine: Contemporary Classic, 428 FE CCX 3069
Posts: 7,506
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Not Ranked
Seeda, Is there a chance you can get a photo of the broken arm? All the controversy has me wondering.
__________________
Dan in Arizona
CCX3209
"It's a great car and I love it, but it doesn't do 'SLOW' very well."
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05-21-2010, 07:26 PM
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CC Member
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Join Date: May 2010
Location: charlotte nc,
nc
Cobra Make, Engine: contemporary #3072 , 390 big block, red no stripe
Posts: 18
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Not Ranked
i will have it up on sat. i cant get a phone call back from mike at cwi. will try again next week. very hard to see the car on stands in the garage.
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06-06-2010, 08:34 PM
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CC Member
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Join Date: May 2010
Location: charlotte nc,
nc
Cobra Make, Engine: contemporary #3072 , 390 big block, red no stripe
Posts: 18
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Not Ranked
just a note about my car. i sent the broken control arm the era. not only were they helpful they turned my order around in 4 days! now just have to get the new gas tank in and we will be up and running again! thanks for all the help from my fellow ccx owners.
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06-07-2010, 05:11 AM
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CC Member
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Join Date: Nov 2003
Location: New Britain,
CT
Cobra Make, Engine: Size 10 Feet
Posts: 3,014
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Not Ranked
It's interesting that the Contemporary arm was about 1" longer than what we use. (We had to modify our welding jig.) Is the rear track on the Contemporary wider than ERA's 56.6"? The ERA uses the original wheel's 3.5" backspacing.
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06-07-2010, 05:56 AM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
Hey Bob CCX is consistent with E type at about 52 1/4" flange to flange.
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06-07-2010, 08:37 AM
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CC Member
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Join Date: Nov 2003
Location: New Britain,
CT
Cobra Make, Engine: Size 10 Feet
Posts: 3,014
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Not Ranked
We have always used the Series I E-type length. Perhaps Seeda's are Series II, which are a bit longer.
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