(2) most urethane bushings out there are complete crap. 20+ years, and some 70k miles later, I finally had a forward swaybar pivot bushing. Placing a small amount of petroleum jelly in the bushings' housing will allow the bushings to be slid into position much easier than attempting to install the bushings dry. im looking for bushings for the entire car, which could cost upwards of $400. Over time, rubber shock bushings tend to badly distort and wear out—or deteriorate and fall out—on any vehicle, regardless of the level of performance use. Many will argue poly vs rubber bushingsthis is not a race car though & I did not want any harsher ride. Aurora Bearing Company manufactures the world's most complete range of rod end and spherical bearings. The poly binds like the rubber bushings. I agree it's a no brainer. Poly is good for low-deflection bushings like subframes and bushings that only deflect in one dimension. Polyurethane weighs less than rubber. Toyota makes good stock suspensions that last a long time, I want more than. BMR’s Polyurethane Differential Bushings offer huge increases in performance over the stock rubber bushings. This is bad. But rubber bushings also have some downsides. Replaced them with Richard Good's solid bushingsIn the beginning you feel a lot through the wheel but eventually it's not noticable. And I can't seem to find out why this is argued to be wrong without a valid reasonI guess I'm just wanting someone to give an explanation of why they think a poly bush would produce a harsh ride when rubber and steel don't. On the other hand, polyurethane bushings transmit everything. Urethane Suspension Bushes - A DIY Project. Shock absorber top (pin). (FWIW, my dad's 88" had rubber, my 109" has poly). I got a set of Energy Suspension Bushings in the early 90's before Buckpack even came out with them. If you have turbo tie rods (no rubber) poly-bronze a-arm bushings and monoball shock tower mounts you have a nice solid, crisp front end. As you can see from the suspension motions in the drawings, bushing are subject to flexing in multiple planes. So there is a huge debate going on with several guys I know and have run with here in the area Poly vs Standard bushing as far as replacement. OE rubber vs. There is no warranty. This being the case, there is no difference between a urethane part and a polyurethane part — they are all made up of urethane groups. While most polyurethanes are thermosetting polymers that do not melt when heated, thermoplastic polyurethanes are also available. way to squishy and soft. the poly bushings that I got with my energy suspension master kit looked like just thin slivers of polyurethane and a metal washer. Like so many things in life, it really all depends on the application. I'd not had any issues with sqeaking to date, either. Urethane Control Arm Bushings: Urethane control arm bushings also know as "A-arm bushings" are installed. So after taking my rig in to get an alignment (FINALLY), i had them do a once over and they said the trailing/control arms had a lot of play (if i get the name wrong, its the arms that connect the rear axle to the car) Now i have yet to go down there an wiggle anything for fear that they were rig. He said the poly’s silicon grease me dry out, given the limited use. That's because with soft factory rubber bushings, it didn't matter. The caster bushings are nolethane and I've had no problems with those. With the washers backwards there was very little difference in stiffness up/down poly vs rubber. ATRO truck parts perform better and last longer. Some rubber bushings are available in a choice of "stock" and "sport". 88 325‐142 sp0096 bushing; rubber trunnion 4 5 8. I remember changing out the IRS bushings on my 99 Cobra from rubber to poly. Manufactured with either rubber or polyurethane. F Type Fully Bonded Bushing Mounts. I have used petroleum on my poly bushings for over 10 years and noticed no deterioration but went ahead and switched to a synthetic lube. Did you know? Many people in our hobby refer to the control arm bushing set as a-arm bushing. I went poly on my 80 when I replaced the rear control arm bushings. Add To Cart. The rubber hose will wrap back onto the hose. What actually is the difference between rubber and polyurethane in terms of suspension bushings? For a more general description of rubber vs polyurethane you can check out the article we wrote about the subject. Poly vs Rubber Bushings Suspension & Steering. Rubber versus Polyurethane bushings: This guy at Eckler's said that was true with the OLD Poly. With the soft factory rubber bushings, you can squeeze them into a variety of sized spring eyes, but the harder (~92A durometer) polyurethane is less accommodating. Whitney, Addco, and many other aftermarket sources also offer polyurethane end link bushings, again as a stiffer and more durable replacement for original. -The "Red" bushings are hard enough to cause a slight amount of reverberation in the steering when driven at speed over uneven terrain (rail road tracks, etc). rubber bushings? Im leaning toward poly for my NC. This maintains the direct crisp feel from your shifter assembly. The temperature of the epoxy or urethane mix: Heating the material will reduce the viscosity. Rubber vs Polyurethane. Automotive rubber-metal bushings differ from “soft” bushings, which are made exclusively from rubber. Polyurethane bushings offer high load and high compression abilities that function long after rubber and plastic bushings have failed. BMR’s Polyurethane Differential Bushings offer huge increases in performance over the stock rubber bushings. I'd refresh rubber for the rear. I agree with Keith when it comes to control arm bushings -- rubber is better. Rubber Drivetrain Mounts From the factory, your car will have rubber mounts supporting the engine, transmission, and differential. Weight and Ease of Use. After taking a good look at the design I'm wondering if a bushing would be a better application in this instance. my buddy owns a 4x4 shop and had a yj for a long time and he said that is what he had and he puts in when customers want body bushings done or a body lift. I'd not had any issues with sqeaking to date, either. PROTHANE POLYURETHANE SWAY BAR BUSHING SETS. Polyurethane vs Rubber bushes Its a pain in the arse removing the old rubber bushings. I don't like poly. i think the midolyne's are still too stiff although i havent heard of any problems yet. Also some GM and Ford drag link bushings. Use generic poly sway bar end link bushings. A polly bushing at either end will cause all sorts of slopnot good. MORE More bushing information and prices will be added as soon as it is available. Use of these bushing is at your discretion. com has a lot of OEM parts for very reasonable prices. As nouns the difference between neoprene and polyurethane is that neoprene is a synthetic rubber, a polymer of chloroprene, commonly used in wetsuits, laptop sleeves, orthopedic braces, electrical insulation, liquid and sheet-applied elastomeric membranes and flashings, car fan belts, etc while polyurethane is. im just debating the difference between trd hard rubber and poly bushings from other companies because i want the bushings to last. Overall, I prefer the banshee bushing system over the bearing bikes I have owned (titus included). All hard-parts are CNC machined from stainless steel and aluminum alloys. we use a slightly oversized inner sleeve, so you can torque the bolt all the way, and the bushing will still float. I know theres a good amount of debate on this, but I was wondering if anyone here has an opinion on poly vs. I'll never use poly again, as I'm 100% satisfied with the behavior of the steering and suspension with rubber. I just dragged home an old Boice-Crane 14" bandsaw which needs new tires. Suspensions-- Rubber, Poly, Midolyne or POLYGRAPHITE (PST) What are you experiences with the following suspension bushings? What is the best? What are the pros and cons of each? Is poly very noisy and too hard for the street? Thanks. Rancho makes some urethane bushings for various suspension needs. Though that doesn’t mean they’re the hardest ones available. BMR Polyurethane Differential Bushings (BK049) offer huge reductions in deflection, without excessive increases in NVH. If the roads you drive on are smooth, the poly is great; however, if you hit a chuck hole or tar strips, you definitely feel it throughout the car. Does anyone run delrin? Has anyone had durability issues since they are harder and technically more susceptible to cracking? I'm a little nervous about it but don't want to swap them if I don't have to. So at this point, I'd be interested in opinions for either style. Having had poly mounts and components in my last Jeep, I'll just say never again. The OE bushings are designed with air pockets and are made from soft rubber. I did leave the rubber on the front drag struts. 75 325‐137u sp0193 poly end pad 5. stock rubber bushings would be better than poly in those cases due to the bind in the suspension as the arms need to rotate and 'bend' at the same time. The same goes for control arms, end links, etc. Notice the factory voids in the black rubber bushing. im just debating the difference between trd hard rubber and poly bushings from other companies because i want the bushings to last. I have discovered that I have the wrong size rotor on the passenger side, 11" instead of 10 3/4" so I have a really annoying clicking sound from that side. Especially if the motor mounts and or transmission mounts are worn. Poly BushingsPolyurethane suspension bushings and engine mounts for cars and pickups. Each type of bushing is suited well for the specific handling the user is attempting to achieve. If you do use grease, use a silicon one or one designed for rubber suspension joints. Front End Link Kit Bushing Kit - Pontiac GTO 2004-2006 Pedders Urethane Rear Toe Link Bushings 2004-2006 GTO. Significantly reduce rear cradle movement in your Sixth Gen Camaro with a Polyurethane Rear Cradle Bushing Kit from BMR Suspension. Bushings Poly vs. Through our research and testing, we've come to the conclusion that plastic and nylon are not suitable for use in either of these locations, due to these materials. Poly is one step up on the ladder of handling compared to rubber. Less compliant means there is less 'slop' in your suspension points. Come spring, theres a ton of potholes from the constant freeze/thaw effect. Poly bushings and rubber bushings are actually totally different beasts, even apart from the obvious material difference. But I wouldn't mind hearing what people have to say in the polyurethane vs. Suspensions-- Rubber, Poly, Midolyne or POLYGRAPHITE (PST) What are you experiences with the following suspension bushings? What is the best? What are the pros and cons of each? Is poly very noisy and too hard for the street? Thanks. Daystar Polyurethane cab and body mount bushings are designed to be a direct replacement for failure-prone factory bushings while maintaining the proper frame/body alignment of your vehicle. Heat, harsh fluids and UV rays. I agree with Keith when it comes to control arm bushings -- rubber is better. Rubber vs Polyurethane Bushings. OE Rubber vs. Most aftermarket poly bushings are pretty much held captive by the outer housing and the chassis brackets. I got a set of Energy Suspension Bushings in the early 90's before Buckpack even came out with them. Rubber bushings are DIY installable and available for spring plates, front lower control arms and rear trailing arms. Not true (bolded). 20+ years, and some 70k miles later, I finally had a forward swaybar pivot bushing. The urethane bushings tighten up the suspension immensely. Since I have HR PartsNstuff's poly motor & transmission mounts, I went with Kirban's Rubber Repro body bushings c/w (2) GNX #5 bushings. The sport bushings are a harder rubber compound that deforms less under load, providing improved precision and feedback. I'd refresh rubber for the rear. Don't forget the shock absorber bushings. I tried getting the stock 25mm front swaybar rubber bushes replaced for poly's, but I don't know anyone that makes them. Discussion in 'Suspension' started by JTNismo, Apr 2, 2008. My ES suspension bushings say on the package to use your favorite grease. Manufacturing the bushing from polyurethane instead of rubber reduces the amount of stretch caused by the moving part through the bushing. Polyurethane is an elastomer in the rubber family; it is not a plastic. Need to replace the tired worn out bushings on the front end components soon. Online shopping from a great selection at Automotive Store. when installed properly, urethane doesnt squeak, will last a long time, and improve handling and feel. You could lube them and it would stop for awhile but would come right back. Thanks for the feedback. I pressed out the original rubber bushing, but the outer diameter of the new polyurethane bushing (SuperPro #SPF1185K) is too large to fit. Handles like a different car. A 10,000lbs excursion is going to ride on poly bushings better then a 3,000lbs 4Runner just FYI. i weigh about 230 so i have my load level set. Placing a small amount of petroleum jelly in the bushings' housing will allow the bushings to be slid into position much easier than attempting to install the bushings dry. If your requirements are purely for the ultimate in handling and chassis performance then the Black Series is for you. About two weeks ago, I had my British car shop install a new front suspension kit on my '74 roadster. You have a thin layer of rubber vs a thicker layer of polyurethane. if you want to eliminate strut rod play, the best way to go is use the strut rods AND. Through our research and testing, we've come to the conclusion that plastic and nylon are not suitable for use in either of these locations, due to these materials. In this episode I’m going to give you my thoughts on whether I think this additional cost of polyurethane bushes are worth it by testing them with day to day driving on normal roads and high. Kit includes four Ultra-Flex Rubber bushings needed to rebuild a pair of Brown Dog motor mounts (MM) or motor mount lifts (MML). Polyurethane's mechanical properties can be isolated and manipulated through creative chemistry which creates a number of unique opportunities to solve problems with performance characteristics unequaled in any other material. Sioux Rubber & Urethane can apply an Endurawear Rubber or Endurawear Urethane coating, or lagging, to virtually any size pulley or roller. In other products vulcanized rubber is used to make bowling balls, hockey pucks, the soles of shoes and other hard rubber products. aftermarket rubber vs. Hi guys, im looking for some real world experience here. Installation of the poly bushings can be more difficult than the rubber due to the polyurethane resisting stretching like the rubber. Going with OEM diff bushing. I went poly on my 80 when I replaced the rear control arm bushings. Order a Leaf Spring Shackle Kit with Rubber Bushings for your 1965-1973 Mustang from CJ Pony Parts today! These OEM-style, direct-fit replacement shackles are easy to install and require no additional specialty tools. As for the differences between rubber and polyurethane, I drove my '68 as a daily driver for 10 years with the rubber bushings all around, and now that I have polyurethane I wish I had changed years ago. is pleased to offer a higher quality replacement bushing that has been extensively tested. 75 325‐137u sp0193 poly end pad 5. I will be replacing my sway bar bushings and would like to know if the are worth the price you pay for poly vs rubber. HOWEVER, that is the theory. Wife preferred Volvo's softer rubber bushing. Poly bushings tend to be too stiff, and make the ride harsh. In addition to this there is also the applied torque of the a-arm as it rotates on the cross shaft causing the factory rubber bushing to flex by twisting. In the case of bushings, spacers, and high load components, polyurethane is the better choice. I replaced all the rubber bushings with 'urethane on my old Falcon Coupe (back in '05 or so), and I think it improved the ride quality a fair bit. So I'm in the market for an upper control arm, my first choice was the Whiteline unit here: basically synthetic rubber. com has a lot of OEM parts for very reasonable prices. Poly bushings turn in or on their shells. Sioux Rubber & Urethane can apply an Endurawear Rubber or Endurawear Urethane coating, or lagging, to virtually any size pulley or roller. Thus, if you need a rubber or O-ring durometer that feels like a running shoe sole, review our rubber hardness chart below, then pick Shore 70A. F Type Fully Bonded Bushing Mounts. If you do it right the poly will outperform the rubber in every category, you just have to take some additional steps to account for some of the differences in the material. With a high resistance to oil, grease, water, and most solvents, polyurethane wheels are ideal for most environments. Bushing style rollers are ideal for sanitary, rust and corrosion resistance applications in push and gravity conveyors. Then the center post has teeth that make it stick to the shackles so that it can't twist. Total bushing kits include all of the bushings you can replace on your vehicle and come in black or red. Depending on their application, polyurethane bushings can be formulated to a specific "hardness" (known as durometer). BMW suspension bushings & bearings link the BMW suspension components to your BMW's chassis. Two of the most popular caster wheel options for mobile applications are phenolic and polyurethane on aluminum caster wheels. There are some good things, and some bad things about using poly instead of. Torsional rubber is commonly used in OEM bushings and is known for being softer of the two. And I am not talking about just some mount bushings, I have Urethane on EVERYTHING IN MY ENTIRE CAR (2002 SI). When the testers replaced the rubber bushings with urethane bushings, the car was able to go around the track at about a speed of one minute and 13 seconds. I want to replace the front motor mount on my 07 Road King and would be interested in hearing about urethane vs rubber mount? The bike is almost stock (stage 1 a/c and exhaust) and 38k miles. IMHO, urethane is the way to go in most cases. The "Sorbothane Hemispheres" also come with and with out a Urethane (Urethane coating only available in "50 Duro" with custom orders). Not a racer, something fun and enjoyable to drive. This is likely the main reason why none of the main bushing companies have offered replacement poly bushings for the VW pickups. Rubber suspension parts or PU suspension parts? Which should you use? Both Rubber and PU parts have their pros, and both have their cons. BMW suspension bushings & bearings link the BMW suspension components to your BMW's chassis. Based on you comments, I think the best way to go is urethane on the lowers and offset on the uppers. Lifetime Warranty. get rid of that tcase xmember or at least get some softer rubber bushings. I'll try to find his thread (he's also local to Boston). Motor and trans mounts are also OEM. Bilstein 5100's on my wish list. But when I looked at the struts all I can see is a new rubber part on the right (the new one) but the strut itself doesn't look brand. But the squeak is not the real issue it is merely a symptom of a larger problem. Polyurethane (PUR and PU) is a polymer composed of organic units joined by carbamate (urethane) links. We will cut and punch for any manufacturers plow blade at no extra cost. With a harder material, more energy will be transferred through the driveline. Rubber bushings are DIY installable and available for spring plates, front lower control arms and rear trailing arms. The poly binds like the rubber bushings. The rubber are junk! I need about 36 EA rubber/ bushings. They are much harder and will last longer than rubber. Polyurethane bushings are used because polyurethane is superior to other materials such as plastic, rubber and steel. COLOR Black is available, the color red is no longer available. I'd not had any issues with sqeaking to date, either. I'd not had any issues with sqeaking to date, either. Polyurethane must have the right lubricant to make it quiet. Rubber and polyurethane are fairly similar in their uses but vastly different in their properties. I remember changing out the IRS bushings on my 99 Cobra from rubber to poly. im looking for bushings for the entire car, which could cost upwards of $400. Stock vs PF – RSB Bushings Bushing Dimension Pic – before and after modification Normally, I would have taken the measurements and sent them back to PF – but I needed my car for work, and the stock ones fell apart on me so they weren’t going back in. So my question is whether to go with rubber or polyurethane bushings given the fact that I live in the rural part of the country with gravel roads. Polyurethane vs Rubber: No Contest! ATROBUSHINGS. Daystar, Jeep XJ Cherokee Polyurethane Sway Bar Bushings 25mm, fits Cherokee and Comanche 1984 to 2001 2/4WD, KJ05006BK, Made in America, Black. Torsional rubber is commonly used in OEM bushings and is known for being softer of the two. Is there a benefit over rubber? Many advantages can be found over rubber. But I wouldn't mind hearing what people have to say in the polyurethane vs. *Don't notice enough difference off road to comment on it. HOWEVER, that is the theory. com with every kit that needs lube. You may have to register before you can post: click the register link above to proceed. 63-79 Rear Bushing and Shim Set. Rubber eventually dry rots when exposed to the elements and degrades in the presence of grease and oil. Mostly a drag car. Custom cast urethane bushings and bearings are often used in automotive parts or industrial equipment because of their benefits over rubber products and the way they can be molded into unique designs to suit your needs. Re: Polyurethane vs. If you do it right the poly will outperform the rubber in every category, you just have to take some additional steps to account for some of the differences in the material. The other issue I have is I'm Canada, so our part selection is a bit limited. The major problem one hears about when using polyurethane bushings is squeak. The term polyurethane means there are multiple urethanes used. Some polymers which are elastomers include polyisoprene or natural rubber, polybutadiene, polyisobutylene. Poly is not worse than stock, except when used in the rear bushing position of the front control arms. Suspension components like trailing arms, control arms, etc, with poly bushings will make your car ride like complete ass, all in the name of marginally improved handling. E30's do not age gracefully from a bushing perspective. It can be made in a higher hardness rating and has better load bearing capacity. Two of the most popular caster wheel options for mobile applications are phenolic and polyurethane on aluminum caster wheels. The black, graphite-impregnated polyurethane bushings I stock are much less than the red or blue poly ones, and never need to be disassembled and re-greased. It is more responsive then rubber. Elephant Racing - Poly Bronze or Rubber Bushings? I was considering OEM style rubber but I see the cost is almost the same as the poly bronze. They are made of polyurethane which is a stronger replacement then rubber and lasts a lifetime. The sleeve is bound to the rubber, as rubber is flexible (and poly is not), the rotation/movement of the suspension is not a large amount at the bushing, and the rubber deflects or twists. There are some lube greases that are bad for Polyurethane. Re: Polyurethane vs. I do not recommend using urethane spring eye bushings in place of rubber bushings. Polyurethane vs rubber bushing? Which one performs better, which is cheaper, which last longer and how does it affect the lasting of other components? I need to replace a few bushes on my WJ, maybe I should simply replace all of them, but that could be costly, and should I go with the OEM rubber or a polyurethane?. SuperPro manufactures their rack and pinion bushings with polyurethane, giving you a much stronger, longer lasting mount that will still absorb some of the vibration from the road to the steering wheel. BMW suspension bushings & bearings link the BMW suspension components to your BMW's chassis. One smart way to enhance the comfort of your ride is to replace the shock absorber bushing with a superior replacement part. This will be important if the hose is pulled across rough or sharp surfaces, such as rock, or if pulled around stone corners, etc. 20+ years, and some 70k miles later, I finally had a forward swaybar pivot bushing. Though both offer an economic alternative to traditional reinforced hose, knowing the differences between them will dramatically improve the efficiency of your system. It was a night-and-day difference. The urethane bushings provide stiffness and superior performance, while the solid mounts eliminate any and all flex. 20+ years, and some 70k miles later, I finally had a forward swaybar pivot bushing. Need to replace the tired worn out bushings on the front end components soon. Does anyone run delrin? Has anyone had durability issues since they are harder and technically more susceptible to cracking? I'm a little nervous about it but don't want to swap them if I don't have to. Urethane tends to have a higher load-bearing capacity, greater tear strength, better compression set, and greater abrasion resistance than rubber. Thanks for the response. I want to replace the front motor mount on my 07 Road King and would be interested in hearing about urethane vs rubber mount? The bike is almost stock (stage 1 a/c and exhaust) and 38k miles. The stock rubber body mounts are cracked and chewed up so I will be replacing them with some "hotroded" chevelle body mounts since there is little/none in the way of aftermarket body bushings. In practice, I ran poly for both front LCA bushings and FULL poly in the trailing arm pivots (not the red inserts) in my Mk2's. There are some lube greases that are bad for Polyurethane. Ive ben criticised on many forum for my choice to 'upgrade' all of my bushes on our Defender expedition truck to Poly. Superior fatigue performance vs. 5s cannot tolerate polyurethane due to the vibration nature of the engine. When you switch to poly bushing make sure all the metal is clean and as smooth as. Hear a clunk when one wheel drives over a man hole cover? It doesn't clunk as much when both wheels go over a bump. Weight and Ease of Use. It was a night-and-day difference. Mostly the uses involve creating a seal, vibration isolators, or as vibration dampeners. Page 2 of 2 < Prev 1 2. Due to their compounding, polyurethane bushings also eliminate binding (as may occur with rubber bushings), since they provide lower friction characteristics and tend to “free-float” at their contact points. 5k SRK59 - TS Axle Seat Maint. The durometer of poly is far softer than steel. To ensure that this happens, the rubber must bond to either the suspension component, or be bonded to a steel sleeve which is mechanically attached to the component. Polyurethane is a poor choice when there is multiaxis rotation at the bushing. sooooo, would you guys suggest hardrace hard rubber bushings, pic hard rubber bushings, or go ahead and get the ES poly bushings with oem. aftermarket rubber vs. Del-alum bushings and spherical bearings here. I learned this the hard way. PST perfected polyurethane with the introduction of POLYGRAPHITE® - a special formula incorporating a low-friction graphite lubricant into the actual bushing material. Midolyne I have had good luck w/ poly bushings in everything I drive. I have NEVER in thirty years seen a case where a urethane bushing subject to wear will outlast an OE-type Silenbloc or equivalent bonded-rubber bushing. Poly resists this, OEM rubber does not. His mission: Mold polyurethane into game-changing products for OEMs across all industries. our urethane bushings are made of the highest quality materials and now they have our new grease groove design made into the bushing to help distribute the grease all around the steel crush sleeve. Order a Leaf Spring Shackle Kit with Rubber Bushings for your 1965-1973 Mustang from CJ Pony Parts today! These OEM-style, direct-fit replacement shackles are easy to install and require no additional specialty tools. Stock rubber spring eye bushings are actually vulcanized into their metal housings. rubber extrusions | extruded rubber | extruded U channels rubber | extruded L strips rubber. Colorants for Urethane Rubber, Resin and Foam + Compare › Ignite™ Fluorescent Colorants For Liquid Rubber, Plastic and Foam + Compare › UVO™ UV Resistant Colorants for Epoxy and Urethane. Polyurethane is a recognised performance product and has a far greater (typically three times) durability than OEM rubber parts. Forgot about the very important step of applying the white grease to the poly bushings before pressing things together. Our new car came with delrin bushings. Only 16 left in stock - order soon. This means more precise and consistent handling, with a slight increase in sharp impacts. Given the choice between rubber or polyurethane sway bar bushings, I'd go with the polyurethane. For joints that need to move in more than just a pivot (ALL the other joints in the above sketch), then Delrin is not OK. Rancho urethane frame bumpstop bushings are designed to out last conventional rubber bumpstops. The major problem one hears about when using polyurethane bushings is squeak. Total Polyurethane Bushing Kits for Jeep. Polyurethane is the most popular material. Re: Polyurethane vs. at this point, anything will be better than what i have, old 19 year old oem bushings. Bushings are 15$ and come in one box containing two rubber bushings. Large selection of OEM and new surplus parts available now!. Poly BushingsPolyurethane suspension bushings and engine mounts for cars and pickups. PST is no different than other poly. Poly bushings and rubber bushings are actually totally different beasts, even apart from the obvious material difference. the poly bushings gave the car a tighter feel but i settled for the smoother softer feel of the rubber bushings. Now you may have went ahead and swapped your e30 subframe bushing out (if not. just wondering what people think of polyurethane suspension bushings vs using regular OEM rubber replacement parts. Rubber is made from the sap of rubber trees, and is much more susceptible to the effects of heat, chemical contact, and age. Rancho urethane frame bumpstop bushings are designed to out last conventional rubber bumpstops. But we may not know. Total Polyurethane Bushing Kits for Jeep. For joints that need to move in more than just a pivot (ALL the other joints in the above sketch), then Delrin is not OK. And it might make a little bit of extra noise, but not enough to outweigh the safety advantages of better handling. Del-alum bushings and spherical bearings here. (1) good urethane bushings are great, and well worth it. For regular rubber bushings, I'd stick with the old mechanic's trick of hitting them with soapy water (and I mean SOAP, not dish detergent or shampoo), or else a powdered dry lubricant- usually. Powerflex proprietary premium-grade polyurethane is both mixed and injected in an automated, environmentally controlled production facility to ensure consistency. The material has been precision-molded to exact tolerances, completely filling the space between the bolt and bushing cup and eliminating air pockets or voids that cause excessive differential movement. Rubber lasts a long time anyway, moog makes good stuff, so does energy. You can use a vise to press in the bushings and housing or also a bushing press kit that is offered through SuperPro. In all honesty, I'm all about ease of maintenance. I've been following the poly vs. I choose the Prothane kit 7-132-BLa poly not as hard as NRG, black in color with cad-yellow plated washers & sleeves containing all bushings 1-7. Rubber and polyurethane are fairly similar in their uses but vastly different in their properties. Polyurethane vs Rubber. Polytek 74-30 Liquid Polyurethane Rubber (16lb Kit) $106. polyurethane? Answer: OE manufacturers continue to use rubber because of costs and NVH (noise, vibration, harshness) but is very compliant during spirited driving causing poor handling and like your tires, they wear out. From this work one of the first crystalline polyurethane fibers, Perlon U, was developed. Over time, rubber shock bushings tend to badly distort and wear out—or deteriorate and fall out—on any vehicle, regardless of the level of performance use. Kenworth Sway Bar Bushing Polyurethane. Placing a small amount of petroleum jelly in the bushings' housing will allow the bushings to be slid into position much easier than attempting to install the bushings dry. There has been an ongoing debate about rubber vs. Q: What are the differences between rubber and polyurethane bushings? A: All original style rubber bushings allow movement by the rubber twisting in rotation. After time, they can dry out and begin to bind a bit. ive read ALOT of good about ES poly bushings (other than TRA) and read the only bad thing is that the poly bushings squeak. If the roads you drive on are smooth, the poly is great; however, if you hit a chuck hole or tar strips, you definitely feel it throughout the car. You have to burn the old ones out no matter what you replace them with.