Re: WQ Fiesta XR4/ST150 with Mazda SP25 engine
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I ended up squeezing the Poly mount inserts into mine. They definitely increased NVH and proved that my mount had collapsed quite a bit.
Filling the mount would be an option for sure, We used to do this with mounts back in the day either by filling with a Sikkaflex Poly or with a harder resin. In both cases having a softer but not air fill in the voids helped immensely. I would say a quite soft void fill (50-60 duro) on an undamaged mount would be the magic. By the time the mounts have aged it’s all over.
I have often wondered if we could hybrid a new mount design but keep ending up at the vibratechnics rabbit hole of “more NVH”.
What I want is basically factory NVH with the ability to simply replace as worn. So a more generic isolator component with fabricated attachment to the motor and body.
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