Polyurethane Suspension Bushes - The Good & Bad

A brief look at the design of suspension bushes and pitfalls of cheap and badly designed bushes. The contrast is the superior design and engineering of the SuperPro brand.
www.sportdrive.technology
www.superpro.eu.com

[@vw_mods_4711]

As you can see I commented on this vid 5 years ago! I put powerflex bushes on my transporter t5 and it had done just as you have showed, I had the subframe out to do the gearbox and the lower arms didn’t move they were solid and extremely hard to move and that was just dangling on the frame off of the van. So wish I brought the super pro, I can see the powerflex bushes have grown past the crush tubes and rub on the frame 🤬🤬🤬

[@SportDriveSuspension]

I was going to say 'that was bad luck', but I'm afraid I can't say that with integrity.

[@markmarkyyy5632]

Great video. Very informative and easy to understand. Nothing like great visuals and side by side comparisons. Keep up the good work!

[@NeilMagill]

Thanks for taking the time to make the video. A very clear un-biased review!

[@normanmendonca2834]

Very informative and well explained. Thank you,great advice from someone who clearly knows what he is talking about.

[@SportDriveSuspension]

Appreciated!

[@bmuns6445]

Thank you for making this video. It was informative and in-depth regarding best designs available and why. Will utilize it for my purchasing decision.

[@jwatson078555]

Thanks so much for this video. I had actually bought a Powerflex set for my mk3 MR2 and was looking for guidance videos prior to fitting them. They went straight back in the post after watching this! My SuperPro set have now been on the car 18months or so and are fantastic. I recommend SuperPro and link your vid to everyone who asks about bushes.

[@SportDriveSuspension]

That's very kind John, thank you.

[@MrKukkelure]

This was a super presentation on how big a difference there is between Powerflex and Super Pro. Thanks a lot

[@SportDriveSuspension]

No problem; I'm glad it was useful. Phil

[@Chinowith]

I still had my LCAs off the car so i just had to hammer out the junk bushings and replace them with Super Pro, I swapped them out Sunday. I had to cut the Super Pro bushings a little shorter than they were but they worked great after that. Thanks alot man, i'm really glad you made this video, definitely great information that everybody needs to know.

[@ascgazz7347]

I know 9 years is a long shot… But how did you get on with the SuperPro?

[@SwPiotrek]

Great video. Huge thanks for explaining it all!

[@SportDriveSuspension]

No problem!

[@simonreeves2017]

Great video, very professional!

[@1badk20]

I use Poly bushings very often. Mostly in places where there isn't a lot of movement, such as motor mounts, subframe bushings, transmission mount, subframe kicker braces, and on so. I will also use them in Sway bar bushings and end links. I will generally use stock bushings in control arms, and leaf springs, unless it is for racing where a stiffer suspension is needed.

[@Terrifier1984]

Im on the process of buying that whole kit for a lifted off roading truck ,but no wanting the outcome to be noisy or stiffer ride what you recommend me ?

[@DanTheManIOM]

The algorithm popped this up for me, great. I have a vanagon and was thinking about ureathane control arm bushings, thanks for the education on the details - one pc vs split, bearing vs material tolerance, conical vs flat shape, and material. Once I get some miles on this 18 month project, I will remember this.

[@SportDriveSuspension]

No problem. It's about the engineering as much as the material.

[@JerryMotorsport]

Great video describing and demonstrating the differences. Just looking for advice on fitting new bushes. Glad I've bought SuperPro!

[@SportDriveSuspension]

Thanks Jerry!

[@z0m123]

Thanks for the upload, very informational.

[@jrf6989]

Great video man! Was about to change my OEM'S to Powerflex, but Super Pro it is!

[@stuartmcdowell1822]

Great video. Very informative and I have made my mind up to fit SuperPro to my discovery. Thank you.

[@SportDriveSuspension]

👍🏻👍🏻 Thanks!

[@phredflypogger4425]

Excellent vid which clearly shows the issues at hand.

[@SportDriveSuspension]

Thank you!

[@Kj16V]

This is the best polybush video I've seen. Great information.

[@SportDriveSuspension]

Thank you!

[@kahikohammah]

Long video but it definitely explains a whole lot. 👍🏽👍🏽 very informative thank you

[@kevinjohnson9086]

very informative. I've come across problems on my 200 sx s14a that relate perfectly with what you have described. when I restore I will probably replace with the super pro bushes

[@scott33761]

Supper nice video. Thanks, I found this just in time.

[@rhettdopwell5351]

Thanks for the video. I have tried 2 brands of PU bushes and so far Superpro are holding up and performing better than other brand in the one application that is a direct comparison. Superpro is more expensive but based on the failures I got they may have been cheaper in the long run. Also keep in mind that any bushings are most likely better than your worn out ones at first but the real test is how long can they keep their performance up. The firm ones might be useful if you have a track car but for most people that is not needed or wise.

[@SportDriveSuspension]

Well said! You still want the suspension to move on a track car. No suspension movement = no damper movement = no damping. You'll get a lot of vibration around steady state which may seem fast but not efficient (less grip).

[@_Epictetus_]

Where you go man? Was looking forward to more videos from you.

[@laohantun7404]

I was hoping in my mind someone show me on suspension bushing and fitting, choosing, there it is.....thanks mate.

[@gt0915]

I noticed the same (lack of grease) when I installed my nolathane bushes in my "99" GU Patrol so I cut a heap of groves with a hacksaw blade in them (about 1mm deep) to keep some of the grease in place....didn't think of the ends of the bushes grabbing...I'll be checking them soon....

[@2076649]

first video that show the actual flexing of theese bushings, i was worried they was too rigid.

[@Russ84NA]

I am in the process of making adj. control arms for an LS swap Miata and decided to make my own bushings. I had installed Prothane bushings on another MX5 and couldn't believe the fit on the sleeves. Using 5/8" ID sleeves on a 14mm bolt is crap. Your video explained how the bushing are supposed to work. Just never thought about it before. Just installed them. I will be using the oem sleeves after I burn them out of the control arms. When I saw how Super Pro tapers the ends so that it has less surface friction, a light bulb went off and they all made sense. Thanks

[@SportDriveSuspension]

Russ Charlton Hats off to you if you're making your own! I've machined PU for R&D and it takes some time. Don't forget to add knurling inside otherwise you'll end up a wishbone that has a lot of stiction. Also, consider the PU you're going to use. SP have developed theirs so it has resilient properties which are crucial for proper performance and longevity. You can actually buy SuperPro is short rod sections in 80Duro which the MX-5 uses. HTH Phil

[@mgbarela]

Thanks a lot :) awesome video lots of information, in regards for 00 vw jetta getting the same squeaky noises on dips and speed bumps sucks. Looks like this is a confirmation and needs replacing. I've just replaced the struts and shocks.. It was much needed, but I am still not satisfied with the suspension ride.. control and cornering..

[@christianwellness4363]

great video but i wanna know whats the best bushing kit out there for my 01 gsr integra. i dont want something to stiff anddeff not squeak. im about to put some buddy club coil overs and i hear poly bushings are bad and squeak .. is hard race the best brand ?.. please tell me your opinion on whats best for my car... i hate to spend 3000$ on a suspension system that sucks and make noise...

[@stephengillen1129]

Great info. Really good. I'm looking at upgrading my VW T 25 syncro. Are they available ???? If so where and how

[@jingyan9279]

Huge thanks for explaining it all!

[@SportDriveSuspension]

No problem!

[@Chinowith]

Holy shit... You sir are a badass. Awesome information, I am going to remove my LCA bushings i just installed on my LCA's for my 240sx and replace them. Thank You!

[@CharlieWayneAdventures]

is this product line carried in the USA? Looking where to source them for my 06 Silverado 4x4

[@awong160]

Amazing video, thank you!

[@JR-tl8tg]

Hi there, Thanks for this good piece of info. I am looking to change my Jetta 2013 suspensions and the same time I think it's a good time to replace some of its bushes. There's a problem though with the expenditure locked in with the struts and shocks, I find myself on a tight budget. I know super pros are pretty good if not the best and yes there are expensive for a good reason too. I therefore have to do this by stages won't be able to change all of them, could you kindly recommend which bushes to change that would immediately make an impact. Thank you very much

[@SportDriveSuspension]

I would tend to make the back better than the front first. The last think you want is a stiff front end and sloppy arse (snap-oversteer). I'm sure there's a double entendre in there somewhere.....😜

[@EdwinHenryBlachford]

thanks for the video m8.. very good. I learned a lot. Yes the poorly designed bushes will clearly give shit performance. I agree. OEM bushes are rubber.. very pliable and properly reduce drivetrain noise.. but also built to a price and cut out way too early. Thanks to you I now know how properly engineered Nolathane bushes are better.. and why. The key words are "PROPERLY DESIGNED". You get what you pay for

[@JasonBlack66]

if this happened to me, would it be ok for me to grease them if I had no way of purchasing new/other bushes?

[@davidconnelly3305]

Found that very helpful. Thank you. 🤙

[@SportDriveSuspension]

👍🏻 No problem!!

[@brucecutts8841]

I use Superpro in my Discovery 3 (and they are going into the 4) and they are fantastic

[@SportDriveSuspension]

👍🏻👍🏻 Glad you like 'em.

[@vw_mods_4711]

just watching your video and am at the knurling bit. I am thinking, not knowing anything about bushes that over time will this knurling wear away with rotation and lead to movement. this is why I would say powerflex has there's flat. with weight on the bush what stops the knurled face getting squashed flat anyway its so thin. good vid tho so far. was thinking of putting powerflex full kit on my t5 transporter. so any help appreciated thanks

[@sphirit]

Great video!

[@SportDriveSuspension]

Thanks!

[@Rickie-Goldsworth]

Any experience with Prothane? They have channeling in the middle to retain grease and I'm using Mobil 1 Synth grease which is supposed to do a really good job

[@SportDriveSuspension]

I don't I'm afraid. However, the channel you describe is called a bullet groove which runs the length of the bushing. As the suspension components load and unload the bushings will move (compress) and this action will deform the groove and you will find any grease gets ejected from the ends over time. In other words, it's a useless design to retain grease, but very cheap to manufacture as it can be created with the initial casting! A knurl on the other hand has to be cut in a second operation. HTH

[@Rickie-Goldsworth]

+SportDriveSuspension thanks

[@dessaaghy7397]

Great video thanks, good advice.

[@johnojoseph]

What do the stock mx-5 bushes look like? Are they conical or flat?

[@MFETmusic]

Very useful video thanks!! i have now had my superpor bushes on my car for about a year and the wishbones are next to impossible to move now, Would you say i need to take them off a regrease it all? if so would grease would you recomend? Many thanks Matt

[@SportDriveSuspension]

Project Miata Matt. I'm sorry to hear that; clearly something is not right. Can you tell me what grease you used? The older type was in a flat clear plastic wrapper and dried to leave to dry lubricant and was not up to the job. The new silicon stuff (in a silver tube) remains fluid. Let me have some further information and I'll point you in the right direction. Ta Phil

[@MFETmusic]

hi phil, thanks very much for the reply, it came with the stuff in a metalic wrapper. i used plenty of it but guess it has dried out, is there a good type of grease to use when relubing them all? i presume im going to have to remove them all again, i had to use a jack to get them to move up and down, they dont squeek at all just hardly move, rather frustrating after all the money spent, i couldnt find standard replacements anywhere . kind of wish i left it alone now but my oem ones had had it Thanks again Matt

[@OldAssSax]

www.amazon.com/CRC-SL3121-Marine-Trailer-Bearing/dp/B00BGRUTRA/ref=sr_1_17?ie=UTF8&qid=1494412560&sr=8-17&keywords=marine%2Bgrease&th=1

[@scott33761]

I'm looking for something better then OEM but I don't want to feel every crack or peace of gravel in the road, I'd like better handling but not at the expense of feeling every thing up my spine. Do you think super pro will do what I need?

[@SportDriveSuspension]

They will indeed. To reduce NVH you need to have isolating properties and in a suspension linkage that requires movement. The SuperPro bushes not only allow free rotation but the will also move as the suspension loads. The performance comes from the way they load and unload in a linear and damped manner. Phil

[@myjizzureye]

What an awesome video.

[@CR500R]

I paint the bush face, inside, outside, and even the sleeve with anti-sieze. Two benefits, longer lasting than the clear snot slickening agent, and no more siezed crush tube to the bolt itself. No grease needed. Works flawlessly for 10+ years now. And most importantly, no poly bush squeaking!

[@newbernbears]

I am saddened that car manufacturers (and others) make lousy bushings that can't hold the grease in to make more short-term money! Outstanding analysis sir!

[@SportDriveSuspension]

I think it's more about not having the right people in said Company who understand the design principles.

[@jinxtacy]

The car manufacturers typically use bonded rubber which has the compliance to do the job, lower NVH and have a long service life (sometimes they get this part a bit wrong). Other part sof the car require rubber if they move dynamically. I see a lot of issues with people using poly bushings where the rotation isn't linear. Spherical would be ideal in those applications, but then you increase cost and lower service life so rubber is again optimal for 99.5% of your customers (though Mazda got pretty wild with the 3rd gen RX7 having 6 sphericals that were a 30k mile service item at several hundred dollars in parts). It's a shame how SuperPro has such a limited catalog because it seems to be the only poly bushing that I would consider. A neat trick that I saw over on StudioVRM.Racing's channel was putting teflon tape around a clean crush tube in a single candy cane fashion and then applying grease and installing it into the bushing. Another option that I saw on some American company's KZbin was a polyurethane swaybar bushing that has a Delrin insert that sits between the polyurethane and the swaybar. Unfortunately, I think they produced imperial sizes but a bit of mini lathe work could make some solutions.

[@davidrix804]

Thank you so much for the info and very very good and concise information very helpfull👍👍👍👍👍

[@SportDriveSuspension]

No problem.

[@GCS88]

Thank you for this video, I learned something about poly bushes and what to get, good thing I didnt place an order from powerflex yet Id get the ones from strongfle instead as they have the same conical design

[@paulsutton5896]

Fascinating. Have I understood this correctly? [I have never given any thought to the bushes in my car - let alone changed one]. The up and down motion of the forked arm was being inhibited by friction between the rubber bushes and the housing. This friction is undesirable in the current application. The bushes which were removed had been installed from new by the manufacturer. The manufacturer's grease was long gone, and the unwanted friction was exacerbated by the rubber bush presenting a large flat area to be squeezed against the large flat mating surface of the housing. The design of the new (blue) bushes overcomes these disadvantages and still remains flexible and soft. The usual recommendation (to fit bushes made from harder material), does not even address the problems it is intended to deal with. Had Mazda (or whoever) given this matter no thought?

[@SportDriveSuspension]

It's down to a few things. Certainly cost andNVH (rubber is certainly considered better) feature highly. You want the arm to articulate 'friction-free' around the pivot point, but resist lateral loading to help maintain alignment under load. Does one care about NVH/extra maintenance on a 'track car'? Probably not, so fit spherical bearings if you can afford it.

[@jamesdaniel1987]

After watching this video I cancelled my order of Whiteline bushes and changed it to Superpro for my 05 Ford Ranger...thanks

[@rodneystancliff6238]

Thank You --- VERY informative!

[@SportDriveSuspension]

Thanks very much; appreciated 👍🏻

[@Asian_Connection]

Really great video

[@SportDriveSuspension]

Many thanks 😊

[@zor__]

Good info, subbed.

[@johnnylaw9840]

Could you just of cut a little off both sides of the bushing to allow only the metal crush tube to connect

[@jonesjigger1]

Do powerflex bushing still have this issue as about to fit the front wishbones with some ???

[@SportDriveSuspension]

I couldn't say. If the compound hasn't changed then I believe the issue would still be apparent.

[@strumpeteer]

Whats the current status on the new bushings? Any squeeks?

[@SportDriveSuspension]

Nope ;o)

[@martynj-c4965]

could the powerflex bushes of been over tightened causing that much difficulty in movement? I've no affiliation to any company but looking to poly bushes my whole car. Looked at Duraflex but heard they're not good again the same with Floflex and Powerflex are ridiculously expensive not with standing they don't cover the whole car range! I'm looking for a specific colour of bushes too being green. Any advice?

[@martynj-c4965]

daniel0663 Well it's not for track use. It's on a Ford Mondeo MK3 ST220 and i was going to use the adjustable lower arm bushings that can be adjusted for correct tracking. Mainly everyday road use - club meets etc. I know the rear arm bushings need changing and the fronts - i want to get a firmer ride without compromising comfort and more noise. That's why i have been looking at links and videos to gain more insight as to which is best. It seems Superflex are superior from your video but the price will be high for sure. Maybe I'll just need to poly certain bushings?

[@lascar48]

Very clearly explained.

[@SportDriveSuspension]

Thank you!

[@poohbear8012]

Thanks for the sharing as I was going to put Powerflex bushes on my car well im definitely not going to now.

[@nissan_motors4934]

Hopped on their website to price out the bushings. But they'res alot of options. Any way I could get a link to buy these exact ones or a part number.

[@SportDriveSuspension]

Contact a specialist supplier for your make/model.

[@chrismin1483]

Hi, My vehicle is 2015 Land Rover LR4. I need to put new lower control arm busing. What would you recommend?

[@SportDriveSuspension]

I have no direct knowledge of Landies I'm afraid. Speak to SuperPro directly.

[@SpirosAliprantis]

What if you insert 2 washers on the sides of PowerFlex bushings? Will that fix the problem?

[@stinkycheese804]

There is no room to do that. However, all that needed done was to clean corrosion off and grease the mounting points the same as he did with the replacement bushings. In other words the only problem was a piss poor installation of the prior bushings. NO new bushings were needed nor did they have any benefit. He just needed a piece of sandpaper and a couple ounces of silicone grease.

[@EndofUSA]

where could I buy that superflex bushings?

[@SportDriveSuspension]

Have a look at their dealer network page: www.superpro.com.au/where-to-buy/dealer-distributor-and-fitter-locator

[@greengrass9572]

Good interesting video, in my personal opinion, I recon all poly bushes for everyday road use are a waste of money because if you replace worn ones with rubber chances are you would have sold the car by the time they fail again years later. I recon rubber will absorb noise etc better, which is priceless because having a harsh ride is real annoying. For the track though, they are probably worth fitting.I have just replaced 12 at the front and 6 at the rear of my Alfa, with standard rubber bushes and it has tightened the handling up massively it's like a new car. I would be very unhappy if I had gone to the trouble and expense of fitting poly bushes, only to have sacrificed ride comfort for slightly tighter handling.

[@daos3300]

great content. you forgot to mention that superpro cost 4x more than powerflex. but you certainly get what you pay for. on the other hand, for those with tools, skills & motivation, less well engineered bushings can be modded.

[@deliBenDeCruz]

great video man!!!

[@SportDriveSuspension]

Thank you!

[@angusdewar5933]

I fit poweflex bushes daily and I've never had an issue with quality or squeaking. This test is also very biased is it not?

[@SportDriveSuspension]

When these were first fitted, no they didn't squeak. Over time though (c.4-5 years) some of the bushes absorbed moisture and expanded which lead to us investigating them fully (the worst culprit was the front lower bush that, when parked on the customers' drive, was in a damper environment being up against a wall). This isn't a biased video, IMO. I have an open mind on most things but it really shows how a product performs over a length of time (to be fair to PowerFlex I don't know whether they have changed their compound since these were made; they may have done). There are some clear advantages of SuperPro though, putting aside the squeaking bushes. If you look at 5min38sec, you can see how the knurling makes the SuperPro bush have far less friction. If you pause at the close up of the internal shot of the PF bush, you may be able to see some friction 'burns' due to the fact that the bush is essentially running dry. I also need a lot less force to push the SuperPro bush down the crush tube at 8mins onward. Remember, once these bushes are installed they are a little tighter around the crush tube which will exacerbate any friction issues. I like that PF use stainless crush tubes vs. the coated steel on SuperPro. With their new silicon based grease, there shouldn't be an issue with corrosion as the tube will be running lubricated all the time. I hope that's answered your question.

[@krusher74]

why dont you point out in the video that the powerflex bushes may be out of size spec due to water absorption.

[@enjoying_life49]

How do you get them into the arm with the lip? I cannot get them to go in on my 2008 Miata, the lip is too big to fit through the arm.

[@SportDriveSuspension]

Have you removed the tube? The tube is inserted once the bushing is installed. You have to use a vice for the lower ones. Grease the end to help. You kinda have to grab the arm and bushing as you wind in the vice to keep it centred. A bit tricky, but straightforward once you get the first one done. 👍🏻

[@enjoying_life49]

@@SportDriveSuspension I have the NC Bushings and they just bunch up before they go into the A-arm due to the significant lip on the end. I have changed out NA bushings with no issue. If I could post pictures I could show you the problems.

[@dallanlewis6084]

Are there super superpros for a Lexus SC300? I could not find any for my car..

[@SportDriveSuspension]

May be not. Check with SP directly.

[@russellking9762]

just had a 40mm suspension lift on my 04 Hilux…the installer recommended Superpro…cost was a bit more but boy am i pleased i spent the extra money…my advice…do it!

[@SportDriveSuspension]

No problem 👍🏻

[@Marcel-ct9wq]

Rubber control arm bushings use their rotational flex to rotate , poly bushings use the center pin as some kind of bearing. I think poly bushings are best in apllications were no rotational movement is needed

[@sp00-EKy]

It is important to grease these kinds of bushings to prevent the issues addressed. You could always go oem and just replace them after they break in about a year.

[@SportDriveSuspension]

Grease is an integral part, and I'd be lying to suggest they are zero maintenance. However, the design reduces the need to re-grease frequently.

[@TomKrall]

What was the superpro poduct # there?

[@SportDriveSuspension]

IIRC SPF5127KIT (US-Miata, UK-MX-5 1990-2005, although ARB sizes differ).

[@robertallan9690]

The area on the end of the bush has no effect on how much force it takes to rotate the arm. The clamp load shared by the PU is distributed throughout whatever size area. The force you are experiencing has been determined by the coefficient of friction of the materials in the interface.

[@SportDriveSuspension]

I think it's just attention to detail rather than having material spilling out over the bearing surface. A bit like going to the beach un-shaved. Doesn't make a difference, but there's a neater, more attractive solution 🤣

[@gordondunn3694]

Very helpful thank you very much

[@SportDriveSuspension]

No problem, sir. 👍🏻

[@hawkmickler4907]

what brand were the first polyurethane bushings?

[@bencrosbie]

hawk mickler powerflex

[@tomthompson7400]

how many times do you have to click a torque wrench ,, great video all the same.

[@SportDriveSuspension]

OCD Pedant.

[@sallom3106]

How would you compare ProThane to SuperPro Bushings?

[@SportDriveSuspension]

I don't have any experience with ProThane I'm afraid. But look out for engineering cues and search for longevity reviews on Forums (squeaking/binding etc.).

[@stillben]

Great vid thanks

[@ollieflp]

Is the corrosion on the wishbone itself not an issue?

[@SportDriveSuspension]

Most of that was underseal that was flaking off. Inside the housing it is recommended that you clean and prepare the surface thoroughly and finish with a thin coat of something like POR15. After that everything is liberally greased with the grease supplied by SuperPro.

[@boomstickbelgian2775]

did you put any copper grease on the bushings?

[@phil_d]

Absolutely not! Copper grease is not a grease for rotary or sliding lubrication; it's a general anti seize compound. SP supply their own silicon waterproof grease and you should only use this with their bushings.

[@boomstickbelgian2775]

oh ok, its just powerflex reccomends using copper grease and its a bit confusing.

[@SportDriveSuspension]

I know, and that's the problem; trying to clear your way through all the crap out there. Copper grease is not a grease for moving parts. The grease element is just a medium for applying the active ingredients which is anti seize for things like bolts (especially those that see temperature). If you use copper grease on brake caliper sliders for example, in a very short amount of time the grease melts away and you're left with seized slider pins and a failing caliper. Very dangerous, but commonly used by numpty mechanics.

[@Andy77337]

I've got a Ford Focus mk2 & tryed PSB bushes on the front track control arms and the left one rear bush virtually fell out of the bracket fortunately it got jammed on part of the floor of the car so didn't come out completely but just goes to show best to buy quality and get it right first time, so replaced both sides those bushes with genuine powerflex purple series shaped like a top hat so they can't escape out the back, problem solved and moves smoothly

[@darylRvillaescusa]

How do you grease say after a year or so having no grease fitting.

[@SportDriveSuspension]

You shouldn't need to do them every year. A quick test without a damper unit would tell you whether or not they needed done. You would need to remove tbe wishbone and crush tube. However, this could be done if you're looking to have the suspension realigned.

[@Taz1451]

You sound like Matt James, someone related to the BTCC world. Are you Matt James?

[@rlu1956]

Note the powerflex OD is smaller than the new one...rethink your area calculation.

[@Scuderia_Dave]

I'm fitting superpro bushes to my mx5 at the moment, the crush tubes are all sub-flush to the PU bush face :/

[@phildixon5495]

Where in the World are you? Did you powder coat the inside of the housings as that will grow the bush. You can send me an email to info at sportdrive dot technology

[@bigsur175]

26 minutes of a super pro add

[@Lughnerson]

A brief look? This is 26 minutes long.

[@SportDriveSuspension]

Sorry. But hopefully it shows a full picture.

[@CharlesChristena]

26 minutes of useful and direct information with visual examples. I'll take 26 minutes of that, over the usual youtube video which consists of an 8 minute dubstep intro, followed by 30 seconds of time lapsed un-lit cell phone footage with no audio.

[@dog_chasing_cars7576]

I'm sure he could talk for many hours including a road test and noise/vibration drive. Personally i think it was perfectly fine. - it also shows you get what you pay for, and shows you what to expect from a good product. - 30 minutes isnt a long time

[@YoStu242]

Yeah I once installed powerflex bushes to both of my rear trailing arms and even if I put grease between the tube and bushing they started sqeaking within a month. To me it seems that Powerflex is not that good.

[@GallowayChicago]

Thank for the very informative video. But you didn't show the Powerflex Bushing reinstalled with any packing grease to see an accurate comparisons. The Powerflex should be pack with liberal amounts of "synthetic" packing grease. Synthetic packing grease can maintain a lube surface of 1/1000 of an inch and will not wash out. The larger problem with any bearing is the quality of the center bearing metal, because oxidation due to cheap metal will annihilate any assembly.

[@SportDriveSuspension]

Thank you! If you watch from 5m38s, I investigate the difference between SuperPro's knurling compared to the Powerflex's smooth bore. You'll notice when both are packed with grease, the Powerflex bush was wiped clean once the crush tube is inserted. Remember, that when the bush is installed into the wishbone housing, the bearing clearance is even tighter and no noticible amount of any grease would remain. If you stop the video at 7m28s, you'll notice some 'damage' inside the Powerflex bush. This is because it's been running dry (even though it was originally installed with their recommended grease) and heated due to excessive friction. The bush is sees constant loadings/unloadings, and this will eject any grease quite quickly. I agree with you regarding the metal crush tube needs to remaining corrosion free. I like the fact Powerflex use stainless steel here, and I would like to see SuperPro do the same. I believe that the issue with SuperPro is small though, due to it running in a permanently greased environment.

[@johnyinthemachone8209]

i want to use poly on my jeep SRT front lower control arms but i have doubts.

[@SportDriveSuspension]

What doubts do you have? My concern would be replacing a small amount of bushings and leaving the rest stock, however I am not familiar with the SRT.

[@CandyflossCottonCandy]

*BUSHINGS*

[@quickguesswho]

went with energy suspension control arm bushing, and solid aluminum body bushing.

[@jimredmond4325]

You should not torque the control arm bushing bolt until the vehicle is sitting on the ground and the ground with the full vehicle weight.

[@shaneyoungs6271]

Why do you say that might be a bit of a challenge to get that torque wrench in there with the tire and wheel right in the way. And they dang sure didnt do that on the assembly line when the car was built. That would be like torquing the head bolts while the engine is running

[@SportDriveSuspension]

That's true of rubber bushings, but these are technically bearings and therefore does not apply. You can bolt up and rotate it's full range of motion with little effort.

[@stef2797]

Strange how your powerflex didn't have the crisscross inside them because mine did, also if you had added a washer to the end of the insert it would have made it run free, looks like the insert on yours id a little short, trapping the polly bush, mine work great......you must have had really old stock on your car.

[@SportDriveSuspension]

They may do now, but these generation didn't. If you study your competition you might learn something 😉 The main issue was the poly was Hygroscopic and swelled in size over time.

[@Angel-HC]

Either the quality is bad or they never greased them like they were supposed to. That's why most people install zerk grease fittings when going poly so they can easily lube them.

[@ArmstrongRacing]

Very nice video here, few people out there actually check for binding suspension arms