How To Make Polyurethane Mounting Bushings DIY
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- Опубликовано: 6 фев 2025
- Replacing mounting bushings can be expensive, so we show you how to make your own mounting bushings and lower control arm bushings using liquid polyurethane! We just happen to be upgrading the bushings on our Audi Quattro race car.
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Here's where we bought the liquid urethane: kit.com/debossgarage/parts-materials/diy-liquid-urethane
DEBOSS GARAGE What hardness did you use?
The vibe of this video tells me these guys might actually live in that garage
Dang Rich, is there anything you can't make? You are definitely going to have the most "built" car at the competition. You're even making parts. I can almost guarantee that everyone else will be like, I'll just go buy that!
He isn't doing anything that you can't do! If you want it...BUILD IT!
Chris Smith agreed. Just stating that most of the people competing would fab some parts but most would try to find an "off the shelf " solution instead of going through this much effort. That's why I enjoy Rich's channel so much.
After years of scoffing at it, I finally tries hot glue a couple months ago. It's definitely not for every job but what it is good for man it's GOOD for. I found pretty quickly that a decent glue gun and using high strength industrial hot glue really steps its usefulness up!
think you need to stir the utherane carefully so there no airbubbles inside or set the can in a vacuumchamber for a bit to get the air out , think the airbubbles where the cause the bushings got so much lower after drying
9:20 I realize the rings were just used for the purpose of a shaping mold and logically you'd remove the mold but in this case...I wonder if it would have been fine to just leave them as is? It looked clean that way.
Great video! Thank you very much from the US.
reminds me of an 80s subaru. you can buy poly tubes and shapes, but I see you went fancy with odd pins and bushings. Thanks for video. I let my subarus back end rock and roll for now.. sloppy old rubbers.
Last time I installed poly bushings I used a hole saw to hog out the rubber and preserve the outer sleeves. Cleaned up the remaining rubber with a little drum sander and 36 grit. of course these were pre made poly kits around $250.
Cool video! I wouldn't shave any off of that metal through spacer on the cradle mount. It doesn't need to be even with the isolator that you made. The metal through spacer is what hard mounts to the body of the vehicle and the isolator is what holds the cradle to the bolt/through spacer. The isolator's only purpose is to hold the pin in correct position in the cradle and provide side-to-side, front-to-back, and up and down stability. At least that is how it appears over RUclips. Just a thought, correct me if I'm wrong.
I think you nailed it...Isolators only dampen the side to side motion, so shaving off the metal bushing will only change the geometry in the final result.
How has it held up?
amazing technology, you could even not knock out the old bushing holder, just get rid of old rubber and fill it with a right level and appropriate inner collar, for example, bushings in Honda (front control arm in 2001+, rear control arm bushings in older Hondas)
You have a shelf so high up on the wall with bottles and cans on it. Do you ever use those things?
Peace and Love
Thank you kindly for your knowledge and expertise,i need to pull off the same job soon(if it be in TMH's will)
Stay dirty and efficient...
Hahaha love this. Step 1: Flip your parts car upside down on your garage floor.
Step 3: Eat greasy almonds....
Is that central vac hooked up.yet @deboss
I reinforced my transmission mount on my 2004 Mazda 6 by filling it with windshield urethane. Works good, although I think it is too stiff. I may have to look into your method of doing this for my subframe mounts as well.
I'm about to do this, why do you think it's too stiff? Did you get a lot of extra vibration inside the car?
lol i love the special tool love guys great vid thumbs up
When removing the metal bits from old bushing I use 225 ac stick welder just connect the leads to the metal on each with it turned off turn it on i like 200 amps count to ten turn ut off slide out your metal bits be careful they will be hot rinse and repeat easy peasy
hey Rich...lets have a contest on whose hands are more messed up !!...your scarring is almost as impressive as mine...
60% of the time, it works everytime!
Hey I've gone through and watched a bunch of your old videos and i was wondering if you could do a video about everything wrong with the 6.2 Detroit that was replaced by the 6.5. But anyways nice video like always.
Im on ebay and can find two products, easyflo and mouldcraft, that are selling liquid polyurethane with shore D, of 60 or 70.
My issue is that the product is for making moulds and casts etc, it makes no mention of bushes for vehicles !
Is this the same material ?
Excellent video!!
Do you remember the exact name of the product you use to make the insert?
Helo. What compounds are used to make polyurethane
Why not use solid metal mounts? Or hockey pucks...
Actually AKMotorsport in Poland makes polyurethane bushings for these cars (same as Audi C3 and C4) :)
Well He already got them made...Let's just see how well they work!
How much are they tho? He's on quite the budget
I have that same exact rear differential (v8 quattro) in my Audi wagon... limited (torsen) slip baby!
good video. useful, I like that
I love Canucks.
I use a heat gun to get all the bubbles out of my polyurethane bushes once I've poured them.
should've brought those spacers to the zip tie drags. Someone could save a fortune on shipping. like the dude that bought the old springs lol
should put a vibrating sander on the parts some were to give it that vibration to make all the voids pop out of the urethane
That was my thought too. Wouldve definitely prevented any pores in the urethane bushing
Hey Rich,at 3:17 in your video who is tall enough to reach that stuff on that shelf behind you. Look's like 10 or 12 feet up.
was thinking the same thing...
TECHNICAL NAME OF THREADS USED IN RUBBER BUSH
+100 points for legit war face paint.
very helpfull
Which durometer?
Nice work...really messy job...I always wondered why bushings were so expensive i guess this is why lol
I thought the car was floating in the first few seconds of the video.
0:00-0:35 everytime I blow a motor in my honda and ask for it to be delivered home...
Whew, I feel bushed after all that...LOL
I used a hot glue gun for making molds for my bushings too, haha
Looks like that stuff gives a buzz
PRO TIP USE RTV instead of hot glue...= no leaks...
Ok so first thing it is to flip the car? .. done!
There are definitely bushing available for these cars. I like the project, but like 5 minutes of Google searching would save you guys hours.
Neacail Campbell yeah but older cars you just can't just buy new parts
The thing is that although they might be available, not everyone has access to them, so knowing how to make them is a skill that will come in handy. Plus, some people prefer to make their own parts where they can. I've been doing things like this since I was 10. I used to make head gasket for my mopeds from coke cans, instead of paying £10 each it cost me nothing but time and an old coke can.
Felt like I was watching an episode of Jack Ass (funny).
clay would of worked awsome.
"these are for sale there free but theres like 800 dollar shipping" me in a nutshell
12.00 wasted product? For shame sir! For shame!
Not worth it. A bunch of Flat Fender Washers Tack'd together on top of one another = DONE. V.
Sorry about the confusion, this is for our racecar that has to pass tech, not for a go kart.
Deboss Garage - great response! haha
Plus if that was done on a control arm it would likely shear the bolt or bend the control arm with any medium impact. The rubber isolators installed on control arms provide spring like action to soften any blows (potholes etc...) that a control arm would see during its life.
Nice! You mean you DON"T want it to go skidding out of control when a tack breaks? Keep up the awesome work Rich...Most of us are rooting for ya!
First
Cool, bro
YOU TALKING TOO MUCH