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2 Weeks Ago #1
urethane vs polyurethanev vs rubber bushings difference
Can someone help educate me more on what is the difference between urethane vs polyurethane vs rubber bushings?
Also would be curious to know what products / grease can be used to install these types of bushings?
I was told that Wd40 Silicone can be used for rubber bushings (body mount) and suspension parts to help against cracking / drying out.
For polyurethane - Energy Suspension has a grease that is used for bushing installation.
What about urethane - was told that dielectric grease can be used for installation.
Thanks
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2 Weeks Ago #2Registered User
- Join Date
- Mar 2022
- Posts
- 133
afaik, rubber is softer and will flex more. Guys make the transition to poly bushings to tighten everything up, whether its body mounts, A-arm bushings or the bushings in your sway bar. The only down side I have heard is that they can be noisy. My daughter has a 350Z with poly swaybar bushings and they squeek. They just need to be lubed more. Poly will also, because they are stiffer, transfer more energy. IOW, they will make the car ride harder or transfer more road noise and/or chassis noise into the cockpit. It's a tradeoff, like most things. They may be great in the suspension, but you may prefer rubber in the body bushings. Just think about where you really want that extra firmness.
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2 Weeks Ago #3