R50/53 Chassis clunk/vibration after installing x brace?

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Sep 6, 2019 | 12:04 PM

#26

Mini invictus

2nd Gear

Joined: May 2018

Posts: 81

Likes: 10

I am following this as I have some worn out mounts and purchased this brace.

Sep 6, 2019 | 12:35 PM

#27

thmpr464

2nd Gear

Joined: Jun 2019

Posts: 54

Likes: 21

Update on my findings after some clunks and noise during acceleration. Background, installed washers to mitigate against the clunks/rattle noise. In the last month, replaced all motor/trans mounts to OEM including the mid pipe exhaust hanger. Observed a 1/2 - 3/4" clearance gained. Reduced from 3 to 2 washers on the rear installation point. Technically, I could remove all washers but decided to leave only two. Overall, huge improvement to the vibration reduction by a factor of 10X. Clunks/noise is gone.

FYI - removed poly engine mount type bushings because of the additional vibrations it added. Also, installed a VIP custom NVH mount that is the best bang for the buck to enhance dampening.

Sep 6, 2019 | 06:38 PM

#28

veedubpat

4th Gear

iTrader: (1)

Joined: Feb 2019

Posts: 359

Likes: 57

Quote:

Originally Posted by Minibeagle

Reviving this old thread because I'm facing the same problem.The catalytic converter hits and vibrates against the X-Brace under heavy throttle load. I'm thinking the flex pipe may have stretched when the upper engine mount failed.

@surfacenormal Quick question about what you refer to the "crap stock mounts". Were you referring to the middle exhaust runner mounts, like this one?

Thanks

I read their post several times to try to understand as well, and I do believe that they meant the original exhaust hangers. I'd probably reinforce that middle open bit with some urethane if I were to replace with OEM. Seems like a good point to fail (they're torn on the ones I pulled from my car).