Javascript Disabled Detected

You currently have javascript disabled. Several functions may not work. Please re-enable javascript to access full functionality.

Lj lower control arm

Started by dans73lj , Jul 31 2014 03:48 PM

Please log in to reply

13 replies to this topic

#1 dans73lj

Forum Member

Members
50 posts

Name:Dan
Location:Queensland
Car:73 lj 4 door
Joined: 08-February 14

Posted 31 July 2014 - 03:48 PM

Hi everyone,

The lower control arm on the drivers side has a crack where the ball joint sits. It is on the underside and It looks like it is spot welded on. Any advice is appreciated. Will upload photos asap

Thanks

Dan

Back to top

#2 _judgelj_

Guests

Posted 01 August 2014 - 12:00 AM

Cracked all the way to the outer edge?

Back to top

#3 dans73lj

Forum Member

Members
50 posts

Name:Dan
Location:Queensland
Car:73 lj 4 door
Joined: 08-February 14

Posted 01 August 2014 - 04:45 AM

Yes it is all.the way to the outer edge,but it's on the section that looks to be a plate on top.

Back to top

#4 _judgelj_

Guests

Posted 01 August 2014 - 11:45 AM

Well the control arm essentially has a a big hole and 4 rivet holes for which to fit the ball join in. If it looks like a plate on top, it sounds like the ball joints mounting bracket, in which case i would drill out the rivets, and fit new ball joints in the front. If not, i don't see why you cant weld it closed?

You have to be careful with this one, last thing you want is to pop out a ball joint. Holden front ends try to pry ball joints apart.

Back to top

#5 S pack

Scrivet Counter

Members
15,716 posts

Name:Dave
Location:Luggage Point
Car:73 LJ
Joined: 25-January 10

Posted 01 August 2014 - 12:17 PM

Well the control arm essentially has a a big hole and 4 rivet holes for which to fit the ball join in. If it looks like a plate on top, it sounds like the ball joints mounting bracket, in which case i would drill out the rivets, and fit new ball joints in the front. If not, i don't see why you cant weld it closed?

You have to be careful with this one, last thing you want is to pop out a ball joint. Holden front ends try to pry ball joints apart.

Upper arms have 4 rivet holes for securing the ball joint, lower arms don't.

Back to top

#6 _judgelj_

Guests

Posted 01 August 2014 - 01:00 PM

Oh shit you are right, im getting my control arms mixed up. The lower is just a press in type, isnt it? Has ribbing all around the side like a coin?

Back to top

#7 S pack

Scrivet Counter

Members
15,716 posts

Name:Dave
Location:Luggage Point
Car:73 LJ
Joined: 25-January 10

Posted 01 August 2014 - 01:32 PM

Oh shit you are right, im getting my control arms mixed up. The lower is just a press in type, isnt it? Has ribbing all around the side like a coin?

Yes and yes, and am I ever wrong?

On second thought don't answer that.

Back to top

#8 _judgelj_

Guests

Posted 01 August 2014 - 01:58 PM

Haha dave i was actually going to mention the fact that you are right, once again. Thought i'd keep it to myself though, dont wanna go inflating egos!

Back to top

#9 _Hamster_

Guests

Posted 01 August 2014 - 02:16 PM

ard to know without a pic but these may help some people remember what what is.

Back to top

#10 limo

Lotsa Posts!

Members
2,673 posts

Location:Adelaide
Car:most Torana models, Jag, Vauxhall, Triton, Staesman
Joined: 24-May 06

Posted 01 August 2014 - 06:26 PM

just replace it, rather than weld. easy to come by

Back to top

#11 dans73lj

Forum Member

Members
50 posts

Name:Dan
Location:Queensland
Car:73 lj 4 door
Joined: 08-February 14

Posted 02 August 2014 - 11:20 AM

Thanks for the reply, from that pic it os the bottom one, and the crack is where the four spot welds are. On one side only. I probably think it is safer to just source a new one.

Back to top

#12 _judgelj_

Guests

Posted 03 August 2014 - 05:44 PM

That's just a reinforcement plate. Up to you i suppose, weld it to keep it going then replace it if you find another. Ill guarantee that it wont crack again (in the spot it;s welded)

Back to top

#13 zodiac GTR

Forum Member

Members
171 posts

Location:melbourne
Car:73 GTR
Joined: 10-April 11

Posted 03 August 2014 - 07:53 PM

then add these

http://www.xu-1.com....rior_parts.html

Attached Files

controlarmplates001.jpg 113.34K 14 downloads

Edited by zodiac GTR, 03 August 2014 - 07:54 PM.

Back to top

#14 _LONA-CK_

Guests

Posted 07 August 2014 - 08:02 AM

dans73lj

Hi everyone,

The lower control arm on the drivers side has a crack where the ball joint sits. It is on the underside and It looks like it is spot welded on. Any advice is appreciated. Will upload photos asap

Thanks

Dan

zodiac GTR

then add these

http://www.xu-1.com....rior_parts.html

Attached Images

what you have said is the reason why these were added to the xu1 from the start of the CK xu1 in 1971, this crack and ball joints popping out happend alot in the 1970 bathurst race as the pre 71 bathurst cars never had them.

cheers gong