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      04-22-2023, 12:30 PM   #98
Finnegan
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Drives: Z4M/. Z3M, E36/46 M3
Join Date: Oct 2008
Location: Teaching the dog to slalom

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Quote:
Originally Posted by grannyknot View Post
I bought the 034 Motorsport engine/trans combo, https://www.ecstuning.com/b-034motor...4-509-3646~kt/
I have only been driving on them for a couple weeks but I certainly like the feel of them better compared to the old original mounts, maybe that's not saying much but so far there is no extra NVH from them that I can tell and all feels crisp.

I also installed the Garagistic supreme shifter and UUC double shear selector rod with all new OEM shifter bushings.
At 4,000 to 8,000 rpm with hard acceleration there is a high pitched buzzing sound and vibration coming from the shifter, I stuffed the the hollow shaft and knob with closed cell foam and that helped some what but I'm still trying to track down the culprit.
Finnegan have you ever encountered something like this?

I'm doubting that the 10 durometer increase in the hardness of the new mounts could be the cause.
I have not experienced that with a new shifter.

However, when I overtorqued the transmission mounts early on in my exploration with this car, I got some excessive vibration. If I recall the torque specs are something extremely slight. That’s just an FYI I don’t think it applies here.

The the buzzing at those rpm range - is consistent no matter what gear you are in - or does that vary? If it varies, I would look for part of the new mechanics, somehow touching a bracket or the car and creating a resonance.
Appreciate 1