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View Poll Results: polyurethane or rubber spring bushings?
polyurethane 52 50.49%
rubber 51 49.51%
Voters: 103. You may not vote on this poll

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  #21  
Old 12-11-2011, 09:57 PM
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serehill serehill is offline
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I just changed my vote

Quote:
Originally Posted by HellCreek
Just ask yourself a simple question: How long did the original bushings last? The auto factories still use steel encased rubber bushings, even though poly is widely available, and it's not because of price. Poly and rubber are about the same price when you compare the cost of the entire bushing, i.e., two halves and a spacer. It's always your choice, but I prefer steel encased rubber when it is available. BTW, I had to replace the poly bushings in my 4.5" lifted rear Comanche springs, because I couldn't stand the noise, and I greased mine with graphite grease. I replaced them with steel encased rubber, and I have heard nary a peep from them since.

-Tom
I would have said poly but I just learned a new trick. If Tom says rubber & he breaths this stuff what do I know. Ease of installation means nothing lesson learned.
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  #22  
Old 12-11-2011, 10:33 PM
Maverick8706 Maverick8706 is offline
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Not to hijack but could we get part numbers and where you can buy them for all the years of the fullsize. I think that would help alot of people.
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  #23  
Old 12-12-2011, 12:16 PM
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JeepinPete JeepinPete is offline
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Raybestos makes all three:

5763356 - 2" spring bushing, for the large eye of the spring
5763305 - 1 1/4" spring bushing
5763340 - 1 1/2" spring bushing

I cannot recall which of the smaller two go where. All are available through Rockauto.com.
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  #24  
Old 12-12-2011, 01:53 PM
Hippie Metal Hippie Metal is offline
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Quote:
Originally Posted by will e
Always use a rubber.



agreed
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  #25  
Old 12-12-2011, 05:56 PM
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Stuka Stuka is offline
 
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If I am doing up a car for road racing, poly 100%.

Offroad/daily driver, rubber is just fine. Plus I HATE the squeaking that comes with poly bushings. And no amount of grease seems to stop it. Plus the poly bushings split when you start flexing.
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  #26  
Old 12-13-2011, 07:28 AM
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orangecherokee orangecherokee is offline
 
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I run poly mainly because that's what came with the springs. everything squeaks when you go offroad. I can't be for sure if it's the bushings or not. it can be annoying but I just turn my radio up and it doesn't bother me.
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Quote:
Originally Posted by Topgun2mo
I would think boxing would limit the amount the frame could flex over obstacles which I think IMO would be a bad thing. I would think you would want all the articulation possible.
Quote:
Originally Posted by johnny019
I'm not saying lockers don't improve the performance of your rig, just that they're overrated.
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  #27  
Old 12-17-2011, 12:07 PM
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jpcoutts jpcoutts is offline
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Rubber. I've never understood the popularity of poly for offroaders, or even any DD for that matter. Poly became popular years ago with the racecar/sportscar crowd because they were one more way to limit flex in the suspension to keep their cars as "flat" as possible in the curves. Even they complained about the harshness of the ride and wear.
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  #28  
Old 12-18-2011, 08:16 AM
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alwomac alwomac is offline
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I personally like the poly bushings in an offroad rig, but only when the bushing is mounted to the frame and not in a shackle. When you use the shackles that don't have bushing, I just use bolts with poly lock nuts and don't hammer them down tight and use garage door lube on the bolt and the outside of the bushing where it rubs the shackle. In my experience with a rig that articulates a lot the rubber just doesn't last and tears pretty quick. If I still had the shackles with the bushing in it, I would use rubber at that point. The poly bushings split in that application. The shackle twists up and busts out the harder poly. The poly is a bit cheaper also, the rubber bushings run $12 a piece for Moog at O'Reilly, and AutoZone ordered me a poly set for all three bushings on both front springs for $28. Now on a daily driver, I vote for rubber all the way. They are much smoother on the street and dont transmit all the harmonics and road vibrations.
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  #29  
Old 08-02-2012, 11:56 PM
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Dirt Wag Dirt Wag is offline
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WOW - could this poll be any closer??
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  #30  
Old 01-31-2013, 01:56 PM
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Dirtfarmer Dirtfarmer is offline
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Quote:
Originally Posted by alwomac
I recommend poly bushings. They allow more flex out of your springs instead of the bushings. Use the greaseable bolts in the shackle and spring hangers too which will reduce the noise and allow full motion as intended from your suspension. If you are running a daily driver as in almost exclusively on the road then use rubber. They are much less harsh and are very quiet and the bushings actually flex and dampen to absorp vibrations, but since we are posting in the Off-Road section I am assuming we are talking about what is best for off road. Rubber will flex, but bushing flex equals binding and twisting of the bushing which will in turn eventually bind the suspension or tear up the bushings. I personally have never had good luck with rubber bushings but it looks like a lot of you are running them with good success. Can anyone actually bottom out a long travel shock in either direction with a rubber bushing, if so I would like to see it and hear your secret as I would rather use rubber?
Where can I get greaseable bolts
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  #31  
Old 01-31-2013, 03:26 PM
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serehill serehill is offline
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here

Quote:
Originally Posted by Dirtfarmer
Where can I get greaseable bolts

http://www.4wheelparts.com/Lift-Kits...47&t_pl=104280
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80 Cherokee
360 ci 727 with
Comp cams 270 h
NP208
Edlebrock performer intake
Holley 4180
Msd total multi spark.
4" rusty's springs
Member, FSJ Prissy Restoration Association

If you can't make it better why waste your time. No use repeating the orignal mistakes. I'm to old to push it that's why.
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  #32  
Old 02-01-2013, 05:34 AM
Redwood Redwood is offline
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Like mentioned above, I have used poly on race cars and didn't care a bit about resulting harshness, because precise handling is everything, and removing unnecessary bushing flex is just one more point where you locate your suspension precisely. On GW, I automatically went with poly when replacing springs all the way around. Results: noisy and harsh without any discernable benefit. My brother makes fun of me when we go hunting because he can hear when I come off the mountain from a mile away. I know he's telling the truth because he texts me to ask me to keep it down! I will look into the grease-able bolts, though. Maybe I can sneak up on him next fall.
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  #33  
Old 02-01-2013, 09:40 AM
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csuengr csuengr is offline
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I voted rubber. I have poly bushings on my CJ and they lasted only 4 years before they were worn through and had to be replaced.
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  #34  
Old 07-28-2013, 12:05 AM
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i never made thoughts about this until this thread.....ordered at BJ`s the complete poly kit, he is waiting for installing
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  #35  
Old 07-28-2013, 07:35 PM
high desert hauler high desert hauler is offline
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I did a 50/50 split on my waggy. I used all poly up front in the springs and shackles but used the rubber bushings in the rear to keep the ride a little nicer since there isn't near as much weight in the back end. Overall ride is very nice just need to source some greasable bolts for the front since its starting to get squeaky.
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  #36  
Old 07-28-2013, 07:45 PM
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RWrightPhotog RWrightPhotog is offline
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lol @ always use a rubber...

That being said, I just put poly in my Z so I went with that :-)
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  #37  
Old 07-29-2013, 05:59 AM
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I have poly in my Z as well and didn't matter as it a rattly car out of factory. The GW is poly as well and I hate the noise.
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  #38  
Old 03-14-2016, 02:38 PM
Charles Kline Charles Kline is offline
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Quote:
Originally Posted by JeepinPete
Raybestos makes all three:

5763356 - 2" spring bushing, for the large eye of the spring
5763305 - 1 1/4" spring bushing
5763340 - 1 1/2" spring bushing

I cannot recall which of the smaller two go where. All are available through Rockauto.com.

Thanks for this!

Are any of these interchangeable with the Shackle bushings? I guess I could pull them out of the Honcho and measure them but I'd like to have all the parts before tearing into it.

Thanks,
-Charles
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  #39  
Old 06-06-2017, 01:23 PM
WrenchMonkey WrenchMonkey is offline
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Trucks get rubber, cars get poly. Easy day.
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  #40  
Old 03-26-2018, 11:21 PM
axton36 axton36 is offline
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I prefer poly. They are stiffer yet more durable than rubber.
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