Polyeurethane vs. Rubber mounts/bushing
 

Looking for opinions as to which way to go. Advantages vs disadvantages of each. Looking to start replacing cab mounts, radiator mounts, transfer case mounts and just not sure which way to go. Don't want to stiffen the ride up anymore than already and new lift is in the plans soon too. If I go poly they will all be black......no flashy colors on the chassis for me. Sorry.....I like stock look. Anyone have experience with brand new rubber vs. poly? Which way should I go?

I'd be interested in hearing other's opinions as well. Ditto what gman is looking for, but I'm interested in those for the leaf springs & sway bars as well.

this has been discussed several times on the board and from what I can tell the rubber is the winner when it comes to cab, radiator support mounts. Poly is good in sway bar, trailering arms etc. Everywhere else rubber. The rubber will flex more and not transfer the jar that the poly will. I'm sure all the opinions will be posted again.

I'm with 1971Stepside. You will feel the Poly.

1971stepside,

Sorry for the repetitious question.

On my lifted blazer I used all poly,susp. and body.It gives a firm ride.I feel the blazer handles better with the poly.As far as the ride and noise,the blazer is LOUD and rough ride either way.My sub has poly in the suspension and new rubber body mounts.The new mounts make it ride nice.

heck gman don't be sorry that what this board is for. I know I have asked questions that have been covered before....

Based on my experience it depends on application. Since this has already been mentioned I'll keep this post short.

Wherever you need yield or flex use rubber. Wherever you need something stiffer use poly.

Poly for suspension, & rubber for the body.......crazyL

My vote goes with crazy L...

I just removed my cab from my 67 2WD today and I am going to put it on my 72 4wd,I was going to use rubber mounts ,my question is should I buy the mount kit for a 4Wd or 2wd,I think I need the 4wd mount kit sunce that is what it is going on,also I need to cut my floor out and install a high hump for the transfer case shifter,how big a hole do I really need to cut out.I have a high hump cover to install but really don't think I need to cut the complete size of the cover out. Thanks

I replaced all body-to-frame mounts and front sway bar and front suspension components with polyurethane bushings. My overall impression is that the truck now handles MUCH better, and the ride is as comfortable as before. If you are concerned about ride stiffness, rest assured that poly bushings alone will not add to your discomfort!

the one problem w/ poly bushings is that the added stiffness puts more pressure/stress on the surrounding metal and will weaken the floorpans or core support structure.just think,it took 30+ years to break the rubber down,think it'll last you another 30?...... probably! jmo.

the one problem w/ poly bushings is that the added stiffness puts more pressure/stress on the surrounding metal and will weaken the floorpans or core support structure.just think,it took 30+ years to break the rubber down,think it'll last you another 30?...... probably! jmo.

I wouldn't think it would be bad to use poly body mounts in a street machine, but I notice your sig says "K10". When you're out 'wheelin, then you subject the pickup to a lot more flex than one that just cruises the streets and goes over a speed bump or two now and then.

Poly doesn't flex. When you have your frame flexed to it limits as you are driving over something while using four-wheel-drive, then poly may bend something. Rubber will give a little and help absorb some of the stress that you are subjecting the body to.

I would use poly in all suspension applications. In fact, I'm going to completely rebuild the suspension in the burb here in a few weeks, and I'm using poly anywhere I can find a poly part for.