I installed a standard bmr k member a few weeks ago. Today was the first day driving since the install, the added cabin noise and vibration is pretty annoying to say the least. I went back and checked all torque specs and bushing and all are within spec. Anyone else deal with this? Any fixes? If I can't find a way to reduce it I will probably be uninstalling soon.
BMR K Member and vibrations
- Thread starter C.Stanley
- Start date
Did you go with the k member with the poly mounts or the one that allows use with the OEM mounts?
*edit* All BMR K members appear to ditch the factory mo7nts and use poly instead.
*edit* All BMR K members appear to ditch the factory mo7nts and use poly instead.
Last edited:
Shit my mistake boss, i was under the impression their standard K member used the factory mounts.
gulfcoastlifest
Gulf Coast
Appreciate your information on this modification.
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BMR Tech 2
Active Member
When ditching the squishy factory mounts and moving to a poly mount you're going to have an increase in NVH. There really isn't anything you can do about it besides deal with it or go back to stock.
gulfcoastlifest
Gulf Coast
I want to upgrade to the BMR complete suspension, however I do drive 7 and 8 hour's at a time, I guess the radio would cover up that noise.
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Any tubular K member is going to make a drastic difference in NVH, and not in a positive way. When I had my Terminator I put a tubular K member in it and decided right then that I would never do that again unless it was in a strictly track only car.
I put a BMR K in my car and didn't see a big increase in NVH
Me, neither. The biggest thing I noticed was more noise under the car due to the loss of the belly panels. Even that was negligible. OP, you just need to drive it more to get used to the new sounds. You'll find it's really not as bad as you think. You'll also get used to the minor vibrations. The benefits FAR outweigh the minor increase in NVH.
NVH is very subjective.
Some will say it did not increase the NVH much at all, and some believe the NVH is bad enough to remove the part and swapping back to stock.
Unfortunately, the NVH people are experiencing is simply due to one of the primary benefits to upgrading - the 95 durometer poly mounts help position the motor and keep it there. This minimization of engine movement helps put the power through the driveline into the tires, helping with shifts and also removing harmful stresses that are sent through the driveline.
Some will say it did not increase the NVH much at all, and some believe the NVH is bad enough to remove the part and swapping back to stock.
Unfortunately, the NVH people are experiencing is simply due to one of the primary benefits to upgrading - the 95 durometer poly mounts help position the motor and keep it there. This minimization of engine movement helps put the power through the driveline into the tires, helping with shifts and also removing harmful stresses that are sent through the driveline.
Before I went this route, I saw Tob's review of Maximum Motorsport's K-member and elected to go this route becuause I wanted the option to stay with stock motor mounts, but also increase rigidity over the OEM unit. You're gonna pay a good deal more over BMR's stuff, but it was worth the extra money to me to keep existing motor mounts and possibly upgrade later.
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