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Cracked SJ80 rear radius arm mounts on diff.

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djed

Joined: Wed Jan 05, 2011 7:31 am
Posts: 114
Location: oz

Posted: Mon Oct 01, 2012 8:45 pm

cracked this wheeling on the weekend. Thoughs....

guess easiest fix is cut, replace then strenghten and brace all mounts on diff

oh and replace with rubber bushes

want33s

az supporter

Joined: Fri Nov 16, 2007 10:30 pm
Posts: 8134
Location: Sunshine Coast Qld

Posted: Tue Oct 02, 2012 6:50 am

Don't make the repair too strong or next time it goes (yes it will break again), it will leave a big hole in the axle tube.

djed

Joined: Wed Jan 05, 2011 7:31 am
Posts: 114
Location: oz

Posted: Tue Oct 02, 2012 8:59 am

so i am guessing the diff housing metal is just as weak/thin as the brackets.

Is it possible to spread the load of where the brackets mount across a larger section of the diff somehow to prevent the whole diff ripping? or maybe diff bracing

redrocketsj50

az supporter

Joined: Wed May 19, 2010 9:20 am
Posts: 268
Location: Sale victoria

Posted: Wed Oct 03, 2012 4:58 am

The diff will be fine. This happened to mine . I got some 5 mm plate and got it laser cut and welded new mounts on for both sides . That was 4 months ago and I haven't had a problem since

djed

Joined: Wed Jan 05, 2011 7:31 am
Posts: 114
Location: oz

Posted: Mon Oct 08, 2012 11:29 pm

Ended up getting 2stroker to fix the tear on the diff brackets.
He welded up the torn (or tear-ed) bracket on the driver’s side (pic above) and a small crack that had started on the passenger side (Probably as a result of the damaged driver’s side). He added a small gusset to the outer side of each side's bracket (2 total). He did this as a opposed to laminating the bracket as he though the original damage was caused from a lateral force and gussets would be a better fix. Plus got him to press in some new rubber bushes that I got off ebay. Hoping rubber will put a little bit less load on the diff bracket and will give a little bit more flex compared to the poly bushes.
$200 all up for the work by 2stoker. pretty happy with the end result. Will keep you posted how it holds up after some wheeling

Last edited by djed on Tue Oct 09, 2012 7:59 pm, edited 3 times in total.

KEENSY85

Joined: Wed May 09, 2012 12:46 am
Posts: 1742
Location: north brisbane
Vehicle: 1985 lwb sierra UTE

Posted: Tue Oct 09, 2012 4:51 am

That came up well

TZAR

az supporter

Joined: Tue Aug 01, 2006 11:30 pm
Posts: 3461
Location: licking some windows
Vehicle: LJ20 LJ50

Posted: Tue Oct 09, 2012 5:15 am

djed wrote:

He welded up the teared bracket on the driver’s side

Was it an emo Bracket???? all teary and crying??? or was it torn???

_________________
Camels have nice toes

KEENSY85

Joined: Wed May 09, 2012 12:46 am
Posts: 1742
Location: north brisbane
Vehicle: 1985 lwb sierra UTE

Posted: Tue Oct 09, 2012 6:14 am

Lol

BlueSuzy

az supporter

Joined: Sun May 04, 2008 11:30 pm
Posts: 9716
Location: NSW
Vehicle: SJ51 LWB, SJ70 SWB

Posted: Tue Oct 09, 2012 6:34 am

TZAR wrote:

djed wrote:

He welded up the teared bracket on the driver’s side

Was it an emo Bracket???? all teary and crying??? or was it torn???

They are normally painted black and don't ask about the owners

_________________

BlueSuzy wrote:

I'm over the G16b's.

KEENSY85

Joined: Wed May 09, 2012 12:46 am
Posts: 1742
Location: north brisbane
Vehicle: 1985 lwb sierra UTE

Posted: Tue Oct 09, 2012 6:38 am

Have u heard about the new grass trend.

Emo grass

It cuts it self

djed

Joined: Wed Jan 05, 2011 7:31 am
Posts: 114
Location: oz

Posted: Tue Oct 09, 2012 8:04 am

haha yeah that is probably bad english. teared, replaced with torn in above post

KEENSY85

Joined: Wed May 09, 2012 12:46 am
Posts: 1742
Location: north brisbane
Vehicle: 1985 lwb sierra UTE

Posted: Tue Oct 09, 2012 9:51 am

Better than most My post.

looks awsome thou

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