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Unread 02-08-2017, 10:32 AM #1
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VibraTechnics motor mounts: more NVH?
VibraTechnics motor mounts: more NVH?

In Oct. last year I had the torque link and gearbox end OEM motor mounts replaced with VibraTechnics, and since then, I notice more vibration from the front end under WOT, especially in 4th or 5th gear. At cruising speed (even 100+), the car feels solid & steady, I just feel the shake when I pin the fun pedal.

I had the passenger side upper motor mount changed to VT 2 or 3 years ago when the RMW shorty header was installed, and no side-effects from that. I'm kinda surprised to feel more vibration from the additional two VT mounts. (I thought the engine and car would be more stable/solid with better mounts.)

Are these vibrations a bad thing, something to be worried about long-term?
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Unread 02-08-2017, 04:22 PM #2
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VibraTechnics motor mounts: more NVH?
I've been running all three for several years now. Done in similar stages... upper first, lower and Trans mounts a bit later. Never had an issue with weird vibrations. I did yank the circuit board in the rear view mirror and tucked it into the headliner. But more so for noise..... nothing felt through the pedals.

If your feeling it under power and not at cruising speeds... I'm inclined to think you have an issue with your driveline or wheel bearings somewhere.
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Unread 02-08-2017, 05:24 PM #3
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VibraTechnics motor mounts: more NVH?
Thanks Savvy. Dave.0 said something similar on the RMW forums: wheel bearings or drive axles. I'm taking her in next week to have my trusted wrench take a look & get it sorted.
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Unread 02-08-2017, 06:55 PM #4
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No worries. If you're running "driveshaftshop" axles... I'll put money on them being toast. Mine only lasted about 25k that I milked to about 30k. Then needed to have them replaced at Fontana two years ago.

They would give a wicked vibration under spirited acceleration... but then during my drive to the dragon two years ago, at highway cruising speeds... it was unbearable. So, my car was essentially sidelined for the first half of the week, until Jan showed up with his replacement axles for me. Almost 2 years... close to 40k miles... no issues.
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Unread 02-08-2017, 11:13 PM #5
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VibraTechnics motor mounts: more NVH?
^^^^ yup had the same issues with DDS axles. Switched to Jan's for the speed we drive.
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Unread 02-09-2017, 03:33 AM #6
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Quote:
Originally Posted by Savvy View Post
Never had an issue with weird vibrations. I did yank the circuit board in the rear view mirror and tucked it into the headliner.
You didn't explain why you did that. Because the mirror was vibrating?
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Unread 02-09-2017, 07:36 AM #7
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Quote:
Originally Posted by rkw View Post
You didn't explain why you did that. Because the mirror was vibrating?
The circuit board inside the mirror would rattle like a muthafukah at my various cruising speeds around 2,200 - 2,500rpm. At first I thought it was in the dash... but a buddy managed to pinpoint the mirror for me. It took a little finesse to crack the mirror open and get the board out. But was totally worth the silence it gave me.

I ended up wrapping the circuit board in bubble wrap, and just tucking it into the headliner. Lost a little bit of distance for unlocking the car but not enough to deal with the angry rattlesnake in the mirror.
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Last edited by Savvy; 02-09-2017 at 10:17 AM.
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Unread 02-09-2017, 10:48 AM #8
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Quote:
Originally Posted by Savvy View Post
The circuit board inside the mirror would rattle like a muthafukah at my various cruising speeds around 2,200 - 2,500rpm. At first I thought it was in the dash... but a buddy managed to pinpoint the mirror for me. It took a little finesse to crack the mirror open and get the board out. But was totally worth the silence it gave me.

I ended up wrapping the circuit board in bubble wrap, and just tucking it into the headliner. Lost a little bit of distance for unlocking the car but not enough to deal with the angry rattlesnake in the mirror.
Thanks for helping me do the same mod to my car.
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Unread 02-09-2017, 12:34 PM #9
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My axles are OEM/stock AFAIK. The car is 11 years old (11.29.05 build date), but I know I haven't changed them since I bought it in '10. My wrench works at the local MINI dealership but does jobs on the side, and knows modded cars which is why I use him.

My car is lowered 1" all around on H&R sport springs. Any recommendations on axles -- hopefully reasonably priced and someplace available to ship quickly?
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Unread 02-09-2017, 12:50 PM #10
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Quote:
Originally Posted by fridayxiii View Post
My axles are OEM/stock AFAIK. The car is 11 years old (11.29.05 build date), but I know I haven't changed them since I bought it in '10. My wrench works at the local MINI dealership but does jobs on the side, and knows modded cars which is why I use him.

My car is lowered 1" all around on H&R sport springs. Any recommendations on axles -- hopefully reasonably priced and someplace available to ship quickly?
If your wrench works at the dealer see what kind of price he can get on OEM ones... but be ready for sticker shock. Next best thing... get Jan's RMW axles. Only thing is with Jan's, you need to transfer the bearing carrier over. Don't go for cheap on axles... You'll regret it.
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