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Stiffer motor and transmission mounts?

Discussion in '360/430' started by collegeboy, Nov 8, 2025 at 2:09 PM.

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  1. collegeboy

    collegeboy Formula 3
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    #1 collegeboy, Nov 8, 2025 at 2:09 PM
    Are there stiffer engine and transmission mounts out there for our cars?

    My CS has 3 year old CS engine mounts and a 2 year old F430 transmission mount.

    While doing all of the work on the car, I looked at the transmission mount, and it is already a little saggy. Not much, but a little, and that's with no weight on it. Same goes for the engine mounts. I would happily swap these out for stiffer units, but don't seem to be able to find any. I was told to use the F430 Challenge mounts, but when I look those up on Eurospares, the F430 Challenge motor mounts are the same part number as CS motor mounts, and then the F430 Challenge transmission mount is the same part number as the standard F430 transmission mount. That seems odd to me.

    Anyways, just curious on what people have done, or if I just replace these with the same units I currently have on the car. I prefer a stiffer and rougher car so stiffer would actually be something I'd like. if not possible though, then it is what it is. CS and F430 mounts it is. Again.
     
  2. TheRyanH

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    #2 TheRyanH, Nov 8, 2025 at 2:27 PM
  3. Rifledriver

    Rifledriver Three Time F1 World Champ

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    #3 Rifledriver, Nov 8, 2025 at 3:11 PM
    Harder rubber does not equal longer life. Just more vibration transmitted to the frame. Deterioration of the rubber is what determines life. Failed mounts all have seperation of rubber right at where the rubber is bonded to metal.
     
    Racer_X likes this.
  4. Scottrx7tt

    Scottrx7tt Karting

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    #4 Scottrx7tt, Nov 8, 2025 at 3:48 PM
    My car came with the CS mounts. It caused a lot of vibration in the cabin. I swapped them back out for the 360 mounts. No more vibration!
     
    Kevin Rev'n and Rifledriver like this.
  5. clean512

    clean512 Formula 3

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    #5 clean512, Nov 8, 2025 at 5:35 PM
  6. Kevin Rev'n

    Kevin Rev'n Two Time F1 World Champ
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    #6 Kevin Rev'n, Nov 8, 2025 at 10:16 PM
    There is so much road "feel" in our cars that I wonder about changing things like engine mounts and suspension. Good question to explore though! Plus you have to consider your roads?
     
  7. GogglesPisano

    GogglesPisano F1 Rookie
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    #7 GogglesPisano, Nov 9, 2025 at 12:33 AM
    Hard engine mounts are a nightmare on a non flat plane crank engine so I can only imagine the vibration you would feel on these cars. The original mounts will settle in a bit so I wouldn’t worry and definitely not want anything harder.
     

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