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Having once run polyurethane engine and transmissions mounts, I will now only run rubber. Polyurethane passes too many vibrations which is why the automotive manufacturers don't use it.
 

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Longevity was never an issue for me. For example, I sure wouldn't replace my feather pillow with a wood block simply because the wood block would definitely outlast my feather pillow. :p

Not to mention, again, that rubber mounts typically outlast the vehicles the factory installs them into. :)
 

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Discussion Starter · #6 ·
Longevity was never an issue for me. For example, I sure wouldn't replace my feather pillow with a wood block simply because the wood block would definitely outlast my feather pillow. :p

Not to mention, again, that rubber mounts typically outlast the vehicles the factory installs them into. :)
my rubber mounts were shot at 100K all of them, the trans mount was torn. and my jeep is still going.
 

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Sounds like you don't like my 'go rubber' suggestion... go with whatever you want, sounds like you want to go with polyurethane. I'm just saying I used poly before and I'll never go back to it again.
 

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Discussion Starter · #8 ·
Sounds like you don't like my 'go rubber' suggestion... go with whatever you want, sounds like you want to go with polyurethane. I'm just saying I used poly before and I'll never go back to it again.
I'm going with poly cause thats what I went with and now the build is done.
 
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