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Thread: Engine and Transmission Mount Replacement

  1. #1
    Join Date
    Mar 2011
    Location
    Baltimore, MD
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    Engine and Transmission Mount Replacement

    Some of you are aware of my failed mounts, if not, now you know

    I'm debating between OEM e92M3 engine mounts and the AKG 75D engine mounts. For the transmission im going as stiff as possible (Not solid). I haven't Money Shifted and I don't plan on it. I also don't want to be locked out of a gear change.

    End goal has always been to auto-x this car, but maintenance has always been an issue. And now I've get to deal with 13 year old mounts that leak the Jelly and rattle the engine supports.

    So the question is Poly or OEM? I'll document the repair process here as well. It will have to wait til July as I'll be in Branson, MO on vacation with the family.

    Sent from my P.O.S. DroidX
    Porsche 944 Turbo Build

    One ride and you'll understand why most rocket scientists are German.

    My ZHP Build 2004-2014 RIP


  2. #2
    The stock M3 mounts wont work? I would think that there much stiffer over the regular E46 ones.

    "I don't care if the door gaps are straight. When the driver steps on the gas I want him to sheet his pant's." Enzo Ferrari

  3. #3
    Join Date
    Feb 2011
    Location
    Tampa, FL
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    2,124
    If not M3 mounts, go poly.
    19" VMR VB3 CSL reps w/ General G-Max 3 A/S, BMW Performance short throw shifter, CDV delete, M54B30 swap, and a redneck CAI.

  4. #4
    Join Date
    Mar 2011
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    Yeah I was set to get the 75D poly mounts just for the sake of their stiffness. 75D Durometer is used for hard hats. Not sure how much give there is.

    e92 M3 mounts will fit on any e36, e46 and e90. They are the latest part number...and they're 68 bucks a pop...I assume they are really quite stiff, but I only want to do this once.
    Porsche 944 Turbo Build

    One ride and you'll understand why most rocket scientists are German.

    My ZHP Build 2004-2014 RIP


  5. #5
    If you only want to do this one time go for the poly ones. You will probably find the job easier than imagined and want the daily comfort of more stock material mounts and willingness to change them out when necessary. Fyi, I want to get a e30 and change it to all poly bushings and mounts just to drive it hard every day.

  6. #6
    Join Date
    Dec 2010
    Location
    South Central PA
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    1,614
    I have poly mounts for the M3. It was so stiff it vibrated so the OEM ones are back in. I am thinking about putting them back in because I have had an re calibration of heart the last couple of days kinda.
    MODS: Badassery | Pure Awesomeness | My Blog

  7. #7
    Join Date
    Sep 2011
    Location
    San Francisco, CA
    Posts
    6,811
    OEM e92 m3 mounts for the engine, and I use RE Tranmissions mounts. It feels much better in my car as well as no change in vibration noise or harness.

    http://www.rogueengineering.com/rogue/TM/TM.html

    Assuming this is your daily driver, I don't see a reason to compromise NVH in the cabin for a very little benefit of going poly vs OEM M3 mounts.

  8. #8
    Join Date
    Mar 2011
    Location
    Baltimore, MD
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    Thanks for the input guys.

    I'll do the M3 mounts.

    Sent from my P.O.S. DroidX
    Porsche 944 Turbo Build

    One ride and you'll understand why most rocket scientists are German.

    My ZHP Build 2004-2014 RIP


  9. #9
    Join Date
    Mar 2011
    Location
    Asheville, NC
    Posts
    3,241
    Thanks for asking this Justin, as you know, I need these too. Clunk clunk!

    Thanks for the input Derek, I tend to take your word for gospel.

    Please visit my build page here, on CarDomain.

  10. #10
    Autozone.com
    Justin Is it the passenger side that's the easy one to change?

    "I don't care if the door gaps are straight. When the driver steps on the gas I want him to sheet his pant's." Enzo Ferrari

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