Quote:
Originally Posted by Malek@MRF
The sub-frame should be unitized, as in no poly, no delrin, just straight solid billet aluminum. The sub-frame does not need to have compliance, that is never a primary source of NVH.
The differential should be delrin or aluminum or a combination of both. Poly has the possibility of squeaking and needs occasional maintenance.
The most common and obvious source of NVH into the cabin is spherical joints in suspension links, stiffer/solid engine and transmission mounts.
Malek
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What kind of load are we looking at for this type of failure? I am sure for a DD that sees the occasional track day this shouldn't be an issue. I think the way Malek described it, if you're consistently launching the car then I think you can anticipate this failure in combination with other mods such as lowers and adding spacers. I am prompting a discussion with this.