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      08-10-2015, 07:15 PM   #23
dogbone
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Drives: '09 E90 M3 - IB
Join Date: Feb 2012
Location: 93 million miles from the Sun

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Ah, I forgot to mention in my original post that EAS had found that my engine mounts were torn. They replaced all the rubber belts in the engine bay right before I was delivering the car to Racewerkz for the cage. While doing the work, they found the torn mounts. One of them was torn quite badly.

Since Racewerkz was going to have the car up on a lift for several weeks, it was easier to have them change the mounts. I chose to go with urethane mounts. Now that I've driven them 5 days, I'm happy with the urethane mounts. They translate more engine vibration into the frame than the stock mounts, but it's not bad. I decided against Delrin or aluminum. It didn't seem worth having something SO solid in there. I've been in cars with completely solid bushings. It's more punishing than I think I need. I think it was the right choice for me.

I'm eyeing all the other bushings in the car now. All other bushings are still stock.
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