exhaust hangers

Discussion in 'E46 M3 (2001-2006)' started by tammc87, Jan 11, 2021.

  1. 11 Jan 2021 at 8:45 PM #1
    tammc87

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    do you pay £130 for 3 oem ones or pay slightly more for hack/powerflex ones.

    i was expecting oem to be around maybe 30 a pop
     
  2. 11 Jan 2021 at 8:49 PM #2
    R60BBA

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    Wouldn’t advise polybushing that area.

    Does anyone know who the OEM is for these?
     
  3. 11 Jan 2021 at 8:54 PM #3
    IanB

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    I am not recommending it., But just wonder what you see is wrong with using polybush exhaust mounts?
     
  4. 11 Jan 2021 at 9:04 PM #4
    tammc87

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    im open to suggestions tbh, if i have to ill just buy the oem ones but thought there might be a better option
     
  5. 11 Jan 2021 at 9:15 PM #5
    R60BBA

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    Sure np.

    The exhaust is designed to move (and expands with heat).

    Polybushing reduces this movement which will put more strain on mounts further up, closer to the engine (ie gearbox and engine mounts).

    In other words, if you are running solid engine and gearbox mounts then I see no issues in polybushing the rear exhaust hangars. However if like most of us, you are on stock engine/gearbox mounts, then I would recommend OE/OEM rubber exhaust hangars.
     
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  6. 11 Jan 2021 at 11:25 PM #6
    IanB

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    The heat expansion is a very valid point, now you mention it I saw somewhere how much an exhaust expanded in length and it really was surprising, unfortunately I don't remember the car or figures :(

    Not what I had seen but interesting, seeing that I would avoid any type of more solid mounting, its just going to stress the exhaust joints and hanger brackets.

    https://mbworld.org/forums/c63-amg-w204/343866-exhaust-gets-longer-when-hot.html
     
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  7. 12 Jan 2021 at 11:31 AM #7
    monkeyboy

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    I bought some Hack ones and then my Indy said basically the same as R6obba also would increase vibration loads, it on the flip side ive known a few people that have fitted with no issues, I decided against it and stayed with stock mounts. You can buy just the std oem rubber insert without the metal frame that are cheaper I believe.
     
  8. 12 Jan 2021 at 9:14 PM #8
    cheburator

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    I borrowed standard coupe ones without the metal frame to try. No luck... the M3 ones are sided, while the coupe ones are symmetrical... this part is dealer only - the eBay ones, supposedly from Lemforder and the likes only last 1yr...
     
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  9. 12 Jan 2021 at 10:05 PM #9
    DJ Syxx

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    I found my Eisenmann has that issue where the pipes have an erection. It seems to do this when its having its orgasm at 7900rpm and gets real hot.

    Sadly it shrivels back when it's cold.
     
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  10. 12 Jan 2021 at 10:09 PM #10
    M3POWERBOY

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    Mines comes forward abit after a ‘nice’ drive lol
     
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  11. 13 Jan 2021 at 10:47 PM #11
    JHMsport

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    ammc87,
    Just looking through my Autodoc purchase history on the app to find out the 3 x exhaust mounts I purchased. that app is really useful by the way!
    'HJS item number 83 12 2021 and the deal on at the time of ordering meant I got them for 9.97 each x 3 of them required to replace all for the back box section.
    I have no idea if they are OEM supplier (doubt it) however the dimensions and fit were matching the originals perfectly when I have the RACP work done at ETA.
    No complaints and good value at £30 all in!
    J
     
  12. 13 Jan 2021 at 10:52 PM #12
    M3POWERBOY

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    If they hold out then you got a bargain

    The main issue with most aftermarket OEM duplicate hangers is they fail after a relatively short period of time

    OEM are expensive but the best unless you purchase the hack ones
     
  13. 13 Jan 2021 at 11:21 PM #13
    JHMsport

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    Yes good point regarding the longevity of them. Cannot comment on that yet as my car does not do many miles even outside of lockdown!
     
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  14. 14 Jan 2021 at 6:12 AM #14
    Ollie87

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    Think oem is the best option with the exhaust hangers. Remember stax changed his for aftermarket items and they last a few months before needing replacement.
     
  15. 14 Jan 2021 at 6:27 AM #15
    tammc87

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    cheers for the recommendations guys, would rather just do it right first time so will go oem
     
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  16. 14 Jan 2021 at 9:43 AM #16
    R60BBA

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    Speaking of OEM, but who is the OEM for this part?
     
  17. 14 Jan 2021 at 9:44 AM #17
    tammc87

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    would like to know this also
     
  18. 14 Jan 2021 at 12:47 PM #18
    Suchy13

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  19. 14 Jan 2021 at 1:55 PM #19
    monkeyboy

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    nice! your want some movement as the exhaust moves with heat and when accelerating etc, the rubber should still offer some of the movement without it being to harsh, unless it’s falls out when the rubber moves......how have you connected it to the rubber edges ?
     
  20. 14 Jan 2021 at 3:38 PM #20
    IanB

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    @Suchy13 what grade/hardness polyurethane did you use? Might have to do this to mine.

    Do you know the correct orientation of the mounts, I ended up putting mine how they fitted easiest as no one had a certain answer.
     

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