Quote:
Originally Posted by Rx-7fetish
DONT DO IT!!!!!!!!!!!! I put solid motor and tranny mounts in my car, and it was nice at first, but as my dd for the past 4 years its gotten old, everything vibrates, stuff vibrates loose (bolts, screws ect) random things rattle, you can hear every little whine and vibration from the transmission and motor. I didnt notice shifting to be any smoother either. If it were track only it would be alright, but as a dd its not worth it (the ladies dont like it much either)
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Big +1 here!
Hell, my '89 GXL with stock (probably torn) mounts, springs and struts rattles like crazy - and that's with the AAS set to "normal". Adding stiffer mounts (be stiffer rubber, polyurethane or solid) is going to increase cabin vibration and noise no matter what. I went from the stock rubber mounts to 70 durometer polyurethane mounts (softer than Banzai Racing's mounts) all around on my old turbocharged '02 Mazda Protege5 and when cold that thing would rattle like crazy and it was less than 10 years old. Just imagine what it would be like on a car 20+ years old. Just saying, if rattles, creaks and other noises bother you than I would definitely reconsider. I will be replacing the mounts on my car at some point but whether with polyurethane or stiffer rubber remains to be decided based on what direction I take the car.