**WARNING** for thoes involved in rear camber arm group buy

Discussion in 'Technical' started by ZWEETT, Sep 11, 2005.

  1. ZWEETT

    ZWEETT Active Member

    As I originally suspected. the welds didn't look top notch.

    And while installing the camber arms, doing the bolts up to factory torque using a certified torque wrench, the welds cracked, torque wrench was set for 90Nm workshop manual says 77-98Nm

    So I would be concerned, you got yours on and they didn't crack, do you want to risk them cracking on you while driving? and possibly braking off... I think not.

    Just a warning, I am not going to be using them, thats for sure.

    Here is a pic
    [​IMG]

    James007, your inbox is full.
     
  2. Egg

    Egg ....

    That's ugly!

    BUT, 77-98nm is for the OEM arms.
    These aftermarket arms are constructed differently so you really shouldn't use those torque figures.
    Looks like they've deformed which is causing them to crack.
     
  3. Chino

    Chino New Member

    ouch, i'm not feeling so bad now i bought the ttzed items.
     
  4. ZWEETT

    ZWEETT Active Member

    No torque values were given, so I referred to the manual.

    Thats what any one would have done, i would think.

    but the welds shouldnt crack like that? if the factory torque spec was too much?

    Only one cracked the other arm, so far is fine, but I would be worried about it cracking.
     
  5. CHILI

    CHILI Indestructable Target

    Who manufactured these arms???
     
  6. Egg

    Egg ....

    Stuff like this.

    About 2/3'rds of the factory torque settings is PLENTY.
    Looks like the weld has broken because the bracket has been squashed by too much force.
     
  7. ZWEETT

    ZWEETT Active Member

    Bracket

    Well, the bracket part was bent outwards more on the arm that cracked from when I got it, but I didn't really think too much of it, as I though it would pull in fine when I did it up.

    So in comparison to the other arm, the bracket was deformed on that side, being bent outwards.

    So maybe the welds are good? and I just got a bad arm?

    Like I said the other arm is fine.
     
  8. beaver

    beaver southern zeds

    Someone here said

    the welds looked shity, so when i received mine
    i chequed em, and they looked like good clean welds
    should look.When you say they were bent, how much
    was it 10/20mm, i think the steel should have bent back in, before that weld snapped,did you inspect
    the welds before you fitted the arm, what did it look like?
     
  9. JaMeSz007

    JaMeSz007 New Member

    NASTY!

    90Nm is VERY tight considering your wheel hubs and rear subframe are close to 15 years old.

    Is that a pic of the same arm with the dodgy weld??? ....the one which I requested you sent back to me ASAP before you install them????
     
  10. JaMeSz007

    JaMeSz007 New Member

  11. JaMeSz007

    JaMeSz007 New Member

    Your inbox is full! I can't reply to your PM
     
  12. minivan

    minivan Guinea Pig Test Monkey

    the steel should bend before the weld breaks..
    dodgy. 90NM is not alot of force.. if thats how tight theyre supposed to be, then who are you to argue.

    wheels under under massive forces while cornering hard. (more than i could ever yank on my torque wrench)

    scary
     
  13. chewy

    chewy Active Member

    age has nothing to do with how tight a bolt should be. The 98Nm is

    used because that is the point where the load bearing takes place. You'll most probably find that the rear traction rod, inbound lower control arm and subframe nuts are all around the same i.e. 98Nm as these are the critical load bearing points in the rear suspension. From what I've read here it looks like the outbound saddle was not bent enough but this alone should have not cracked the welds and it looks like welds didn't pentrate enough to start with. It's also possible that due to poor welding the saddle was originally a nice u-bend but with excess heat from welding over a weld to fix up a bad weld it's also warped the saddle in the process.

    I do my aftermarket suspension parts up to mid point of the torque specs and check them after a drive to make sure that when they seat and bed in properly and then nip them up again to make sure. Also a good idea to use loctite on all suspension bolts.
     
  14. ZWEETT

    ZWEETT Active Member

    ok, send PM now, sorry.
     
  15. DRIVER

    DRIVER New Member

    definately shit welding....

    I didnt buy them but judging by what happened not hot enough on the weld to penetrate properly. being only small welds probably done with a 240V mig but should have been done with an arc welder (more heat)...one tack (proper one, and not with a welder from bunnings !) should hold a fair bit of weight.

    a weld that looks good doesnt mean shit, I'm doing welding at work now and have seen plenty of welds that look nice but didnt penetrate and can be pulled apart by hand.

    I reckon there will be a few more people with problems.

    BB
     
  16. A-Bris-Z

    A-Bris-Z Carcraze

    Oh crap....

    Now I'm not sure whether to put them on or not!! Could have just been one bad one, but the forces on these things must be at higher speeds!!:rolleyes::unsure:
     
  17. A-Bris-Z

    A-Bris-Z Carcraze

    Anyone having this problem??

    Can those who have installed these have a look to see if they have cracks!!?
     
  18. Tektrader

    Tektrader Z32 Hoe, service me baby

    Just take them to a boiler maker and get them rewelded

    Problem solved
     
  19. A-Bris-Z

    A-Bris-Z Carcraze

    Would you do this straight away...

    or wait and see whether it going to crack?
     
  20. CHILI

    CHILI Indestructable Target

    Just wait for them to fail, might not need to get them fixed after that. :p
     

Share This Page