Quote:
Originally Posted by kestreltom
I tried filling my mounts like that. The result was that more vibration came through. It is even worse if you fill the transmission mount.
I have also found that winter's colder ambient temperatures affect the OEM rubber mounts making them harder... thus I get more engine vibration on cold mornings. The car smooths out quite a bit as the engine bay warms up.
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I wonder if you filled them with too hard a material. Mine are fine down to 20F...maybe more, just haven't had it any colder.
My first shot at filling was with a Shore 70 urethane and it rattled like a solid mount. I did a quick test with un filled mounts and it was very smooth. Then filled those mounts with Shore 30 urethane and it was indistinguishable from stock. It's been nearly 100k miles and no sign of collapse.
...just a data point for consideration.