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Thread: Rear Trailing Arm Bushing

  1. #1

    Rear Trailing Arm Bushing

    Guys:

    I'm going to replace the Rear Trailing Arm Bushing (RTAB) (BLUE BOX) and was wondering whether it's much more labor to replace the Upper Trailing Arm Balljoint (RED BOX) and the Lower Trailing Arm Bushing (GREEN BOX) as well?

    I'm having the RTAB replaced at an indy shop and wondering how much more labor charge to swap out the Upper Balljoint and Lower Bushing too?
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  2. #2
    Join Date
    Jun 2011
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    VA/DC
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    14,406
    I've never done the rear balls joints and can't say that I remember anyone mentioning it. I'm betting you'd be good with not doing them. BUT, while your in there... it's worth considering. Get a quote?




    ---
    "ZHP is a garbage option anyway- just some cosmetic upgrades with a different cam and diff to claw back some of the performance lost fitting those hideous and heavy wheels. Any 330 with a 3.46 diff will smoke a ZHP every time. The whole Mafia thing reeks of childish behavior." - anonymous E46 fanatic

  3. #3
    Join Date
    Feb 2014
    Location
    Picton, ON
    Posts
    6,000
    if you have the right tool, you can replace both in about 45min to an hour.

    replace both red and green box units with new lemfoerder red box units (so ball joints in the upper and lower position).

    i did this about 15 months ago. one of the uppers (red box) had excess play - but it was 11 years old and had 130K miles on it.
    peter

    2018 Subaru BRZ RS 6MT

    2015 VW Golf TSI Comfortline 5MT

  4. #4
    Join Date
    Jun 2011
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    VA/DC
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    14,406
    I have the tool for the RTABs if you are interested.

    Peter, can you get to the ball joints without removing arm/subframe?

  5. #5
    Join Date
    Jun 2014
    Location
    Toronto, ON
    Posts
    1,161
    As Slater pointed out, you should replace the upper and lower (outer) balljoints with the M3 part (part# 33306852895).

    Oh and while you are replacing your RTAB, you should consider the M3 version as well (part# 33326770817) along with RTAB limiters. The limiters help prolong the life of the RTABs and provides you with a tighter rear suspension. I went with the ECS Tuning RTAB limiters.

    I got this done in November and it made such a huge difference in the handling of the car.
    anandoc

    2004 330i auto | ZPP, ZCW | Schwarz 2 (668) | schwarz (N6SW)

    aFe Stage-1 Pro DRY S intake | Morimoto FX-R 3.0 retrofit | ///M3 Seats (power, heat, bolster adj.) | ///M3 Strut Brace | ///M3 SMG Steering Wheel retrofit | OEM Alarm retrofit | GROM USB | Khoalty angel eyes


  6. #6
    Join Date
    Feb 2014
    Location
    Picton, ON
    Posts
    6,000
    Quote Originally Posted by ELCID86 View Post
    Peter, can you get to the ball joints without removing arm/subframe?
    yep, absolutely!

    - jack up rear, remove wheels
    - disconnect lower shock bolt
    - drop hub assembly down and remove rear spring
    - disconnect upper control arm at hub
    - R+R ball joint
    - reconnect upper control arm at hun
    - disconnect lower control arm at hub
    - R+R lower rubber bushing with new ball joint
    - reassemble
    - enjoy tighter rear end with better wheel articulation!
    peter

    2018 Subaru BRZ RS 6MT

    2015 VW Golf TSI Comfortline 5MT

  7. #7
    Join Date
    Nov 2012
    Location
    22841
    Posts
    9,468
    That job is on my list of things to accomplish this year. Who's got a tool to rent?

    His - 2004 Imola Red / Alcantara 330i | 6MT | ZHP |

    Her's - 2005 Black Sapphire Metallic / Black Leather 330i | 6MT | ZHP |

  8. #8
    Quote Originally Posted by Vas View Post
    That job is on my list of things to accomplish this year. Who's got a tool to rent?
    I do. Feel free to PM when you need it.

  9. #9
    Join Date
    Nov 2012
    Location
    22841
    Posts
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    Quote Originally Posted by Karl Lazlo View Post
    I do. Feel free to PM when you need it.
    Awesome. Thank you for offering.

    His - 2004 Imola Red / Alcantara 330i | 6MT | ZHP |

    Her's - 2005 Black Sapphire Metallic / Black Leather 330i | 6MT | ZHP |

  10. #10
    Join Date
    Feb 2014
    Location
    Picton, ON
    Posts
    6,000
    shawn's got one too.
    peter

    2018 Subaru BRZ RS 6MT

    2015 VW Golf TSI Comfortline 5MT

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