Close

Results 1 to 8 of 8
  1. #1
    Join Date
    Dec 2019
    Posts
    9
    Rep Points
    7.8
    Mentioned
    0 Post(s)
    Rep Power
    0


    Yes Reputation No

    E90 chassis on the subframe issue.

    My E93 is a 5/08 build date that is supposedly not effected by the PS pully issue. However, I just saw a couple days ago the belt has one rib that has been ripped off. I checked the PS pully and subframe and donít see any issues of scratching. However, how can I be sure I have the updated notched subframe? Iíve looked at dozens of pictures online and didnít find any comparisons. To be fair, Iíve never had this issue until I went stage 1+ on MHD. No oil leaks and the car is maintained well. 82,000 miles.

    The only damage I see is on the lower tensioner pully looks like the inside edge of the wheel is damaged, the same side of the belt where it is ripped off. The belt and pullys only have about 7,000 miles on them. My subframe has about one inch of space or more from the PS pully.

    Thoughts?

  2. #2
    Join Date
    Jul 2017
    Posts
    76
    Rep Points
    266.9
    Mentioned
    5 Post(s)
    Rep Power
    3


    2 out of 2 members liked this post. Yes Reputation No
    You probably need to install new motor mounts. Likely the stock ones are super worn out and allowing the engine to move around a bunch and let the power steering pulley hit the frame.

  3. #3
    Join Date
    Dec 2019
    Posts
    9
    Rep Points
    7.8
    Mentioned
    0 Post(s)
    Rep Power
    0



    Yes Reputation No
    Ok thanks bro
    BMW fanatic and Equipment engineer at Intel Corp.

  4. #4
    Join Date
    Jul 2012
    Location
    Boston, MA
    Posts
    3,257
    Rep Points
    2,462.3
    Mentioned
    85 Post(s)
    Rep Power
    25


    Yes Reputation No
    Get stiffer MM, revshift 80A gets my vote. Next time you have the frame down, bash it with a sledge and notch it yourself Click here to enlarge

  5. #5
    Join Date
    Dec 2019
    Posts
    9
    Rep Points
    7.8
    Mentioned
    0 Post(s)
    Rep Power
    0



    Yes Reputation No
    Yah. Before I do Iím going to setup a miniature camera to get some footage of the pulley under load. Iím curious to see how much itís moving around. But will most likely do as you said and go with a higher rubber durometer and notch the subframe a little.
    BMW fanatic and Equipment engineer at Intel Corp.

  6. #6
    Join Date
    Sep 2012
    Location
    Missouri
    Posts
    307
    Rep Points
    687.7
    Mentioned
    38 Post(s)
    Rep Power
    7


    Yes Reputation No
    Click here to enlarge Originally Posted by Mr_BMW Click here to enlarge
    Yah. Before I do Iím going to setup a miniature camera to get some footage of the pulley under load. Iím curious to see how much itís moving around. But will most likely do as you said and go with a higher rubber durometer and notch the subframe a little.
    I'd love to see a video of this.....I've always been worried about this myself and might get that crankshaft seal cover to prevent the belt from getting sucked in but last I saw it wasn't available right now which seems crazy since it's just a piece of metal

  7. #7
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    140,502
    Rep Points
    42,507.0
    Mentioned
    2455 Post(s)
    Rep Power
    426


    Yes Reputation No
    Moving this to 3-Series -> E9X chassis
    Three sets of brand new 991.2 3.0 headers for sale: Kline, Fabspeed, and Vektor Ceramic Coated

    IPD plenum for Porsche 991.2 3.0 for sale: $650

  8. #8
    Join Date
    Dec 2019
    Posts
    9
    Rep Points
    7.8
    Mentioned
    0 Post(s)
    Rep Power
    0



    1 out of 1 members liked this post. Yes Reputation No
    Okay I wasn’t able to get a footage of the issue but I believe it was due to an object falling into the pully and then chewing up the belt. I’ve made numerous hard runs and wasn’t able to repeat the issue. We can close the thread if moderators want to. Thanks.
    BMW fanatic and Equipment engineer at Intel Corp.

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •