Feedback: Polyurethane Body Mount Bushings

fourfive

Senior Member
Interested in hearing feedback from anyone that installed polyurethane body mount bushings.

1. Did you notice any changes in ride quality (especially on road)?

2. How long have you had them installed?

3. If you have polyurethane body mounts, & the OEM rubber body mounts were the same price, would you switch to back to OEM?
 
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Oh right, forgot that bit. I tore everything apart and the factory ones look to be in excellent shape for the mileage. So I'm going to reuse them for now.
 
id imagine new rubber oem mounts will be softer than new poly mounts, since most of the poly used in automotive applications is harder than the rubber counter part. that being said the old rubber thats on there now is probably as hard or harder than the poly mounts.

id say for comfort and offroad flex, softer body mounts would be ideal. if you want better handling and want to go fast the harder bushings will work more to your advantage.

any links to theses poly body mounts?
 
did you end up using the poly mounts? I'm trying to research this now as well. Sorry to dig up an old post

Yes! & I forgot to update this thread. Overall experience was positive. Handling & ride quality were good. No significant difference compared to my OEM mounts in that regard. I didn't experience any, squeaks, rattles or shuddering but I switched back to OEM rubber mounts because I was experiencing increased driveline noise that would resonate throughout the cabin. I'd compare it to loud mud terrains or the wawing sound of a bad wheel bearing. I had them on for several hundred miles & it occurred in all driving conditions. I was in contact with Roger from 4crawler during this time but we weren't able to come up with a definitive reason why this was happening & was the first he had heard of this. I went through all my driveline & suspension components & didn't find any abnormalities. I already had a suspension lift & 2" 4crawler body lift prior to the poly body mount installation with no unusual sounds. I don't know if the poly body lift blocks in addition to the poly body mounts magnified the noise transmission. I put my original oem mounts back in & the resonating driveline sound went away. After another few hundred miles I put the poly body mounts back in and the magnified sound returned so I ended up buying new toyota rubber body mounts & it's been allgood.

Roger was very cool & offered a refund due to this unusual issue. I haven't come across anyone else that has experienced this. The only other thing I can think of is the additional washers I have on my body mount bolts. I don't know if that may have contributed to the amplified driveline noise. Also, I had the 4crawler body mounts & the few people I've talked to I think had energy suspension. I wouldn't think there would be a significant difference in the density that would cause something like this but don't know of any other reasonable variable so I'm just guessing at this point. When my new oem mounts eventually wear out & are no longer available I wouldn't have a problem going back to poly body mounts. For now I like having a quieter cabin but want to emphasize that I have not heard of anyone else experiencing this so I wouldn't let this one incident prevent you from going that route.
 
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Yes! & I forgot to update this thread. Overall experience was positive. Handling & ride quality were good. No significant difference compared to my OEM mounts in that regard. I didn't experience any, squeaks, rattles or shuddering but I switched back to OEM rubber mounts because I was experiencing increased driveline noise that would resonate throughout the cabin. I'd compare it to loud mud terrains or the wawing sound of a bad wheel bearing. I had them on for several hundred miles & it occurred in all driving conditions. I was in contact with Roger from 4crawler during this time but we weren't able to come up with a definitive reason why this was happening & was the first he had heard of this. I went through all my driveline & suspension components & didn't find any abnormalities. I already had a suspension lift & 2" 4crawler body lift prior to the poly body mount installation with no unusual sounds. I don't know if the poly body lift blocks in addition to the poly body mounts magnified the noise transmission. I put my original oem mounts back in & the resonating driveline sound went away. After another few hundred miles I put the poly body mounts back in and the magnified sound returned so I ended up buying new toyota rubber body mounts & it's been allgood.

Roger was very cool & offered a refund due to this unusual issue. I haven't come across anyone else that has experienced this. The only other thing I can think of is the additional washers I have on my body mount bolts. I don't know if that may have contributed to the amplified driveline noise. Also, I had the 4crawler body mounts & the few people I've talked to I think had energy suspension. I wouldn't think there would be a significant difference in the density that would cause something like this but don't know of any other reasonable variable so I'm just guessing at this point. When my new oem mounts eventually wear out & are no longer available I wouldn't have a problem going back to poly body mounts. For now I like having a quieter cabin but want to emphasize that I have not heard of anyone else experiencing this so I would let this one incident prevent you from going that route.

Roger is a 100% stand up dude. Glad to hear he took care of you.

Did you feel a difference between the old OEM mounts and the new OEM mounts?
 
Metal fatigue on the bodies was a common problem on older body lifted 4x4s that used those dense hockey pucks. I would imagine poly would wear through that thin 3rd gen steel like nothing.
 
Roger is a 100% stand up dude. Glad to hear he took care of you.

Did you feel a difference between the old OEM mounts and the new OEM mounts?

I agree. He has always been quick to respond & very helpful with product info or installation help.

Not a huge difference but I think that was partly due to my original body mounts not being in terrible shape. It was a subtle improvement that an owner/driver would notice but probably not anyone else.


Metal fatigue on the bodies was a common problem on older body lifted 4x4s that used those dense hockey pucks. I would imagine poly would wear through that thin 3rd gen steel like nothing.

The thin steel is part of the reason why I have extra washers that are slightly thicker & larger diameter. My thought was to help distribute the load a little better but I don't know if it actually makes a difference. Definitely not a fanboy of body lifts but it was one of the simpler options to clearing my tires.
 

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