Polyurethane Engine & Transmission Mounts for less than $25

Kilometers is pronounced kilo-meters, same as kilo-grams.
Not ka-lom-it-ters.

How come this guy sounds like 'Chris Fix?"

I've tried this with my 02 civic. I dried in a hot summer room for 2 weeks and it was not enough. Polyurethane tried to come out and deformed.

I highly recommend drying it for a month, or use different fill material.

Hey Milmast your information is misleading, the hardness of 3M window weld (08609) as per data sheet is 55-60 and not 80

thank you brother

otimas informações muito grato.

I tried finding the one in the video can't find it I found loctite PL 8× stronger polyurethane based will that work

roof and flashing is the way to go

after 4 years, how is ti?

I just did this today so speaking from experience, Smooth-On Smooth-Cast is SO MUCH BETTER AND FIRMER THAN 3M WINDOW WELD. I PREVIOUSLY HAD WINDOW WELD ON MY DIFF MOUNT BUT SMOOTH-CAST 300 IS 100X BETTER AND LONGER LASTING!!

I have newer more high tech sealer adhesives than those which are not new. May try one with a known cure rate as those are very slow to cure.

Fantastic diy car hack. Awesome!

Could add rubber grains to the poly and mix it up before adding it to the voids , it might allow the mounts to dampen the vibration.

What about for the lower control arm bushings?

Squirt a little windex on your finger, or on any tool that you choose to use to smooth the surface of the urethane with.
It won't stick to windex.

How long wait to full strength of windows glue? Week?

Seen this years ago but now they can work for me 🙏🙏

76! Thank you!

Thanks for the in depth video. Gonna beef up my bushings on my control arms on my audi. Cheers from Canada

Good Vid!

How is the temperature resistance? The mount I want to put the 3M into is very close to the exhaust and will be exposed to a lot of heat that does tend to soften up some of the aftermarket all-polyurethane mounts available for it

gonna do the locktite poly on my 1990 civic hatch.... mounts are all torn and need replacement. going to do an experiment will check back in a week

They probably won't feel as bad on a FWD car.

inject polyurethane into my cavity

Thank you for your video and time. Done like a pro. Good luck with future mods!!🔥💯

This is all stupidity. it's all a wasting time. Full of pain. waste of money. it shake as hell.

Vibration? hell a lot. I did this on my Elantra 2008 and it was the biggest mistake I ever done. I had to replace them again for stupid. Well, at least I know what mean to be stupid.

I been through 3set of mounts in 2years with my slightly mod camry lol I just bought a new set couple weeks ago and I'm glad I found this video 💪💪 I'm going to try it asap . Thanks brotha 🙏🏼🙏🏼🙏🏼🙏🏼🙏🏼

Nicely explained

I would love to watch what you did to the front motor mount, I know it is vacuum operated. So please show how you did that one!!

I just repaired the transmission mount on my 2003 caravan. Filled the areas with locktite pl2 construction adhesive the two days ago . After filling it set over night help placed to under the hood and drive 40 minutes. Actually the one that I got free from the junkyard was the one I filled it was in reasonable condition. I took it for a short ride just now and it worked great so far…

This modification is a bad idea! Motor mounts are designed to absorb/dampen severe shock waves. Now those shockwaves stay in the engine to stress pistons, rings, bearings, transmission, clutches, etc. You just reduced the life of your drivetrain. Never modify a vehicle until you thoroughly understand the laws of physics.

What about silicone? I think silicone is better than polyurethane because it’s inorganic and has more resistance in time. Also is a bit flexible so will absorb more shocks.

My initial thought was that the 3M Window-Weld would be TOO hard myself…but yeah, good/new rubber is pretty stiff! I’ve been doing this for awhile now myself…and believe it or not, you get a little better reaction time and average 1/10th faster in the 60’ if you like to play on the drag strip a little bit👌🏼

If I buy new motor mounts and fill them with silicone, will it increase their lifespan?

One thing you want to do is finger the compound to make sure you get all the air pockets out of.

So that's just add the silicone sealant to gasket but how if the rubber gasket entirely replace with the silicone sealant?

I replaced all the mounts and i have vibrations inside any advice

Question so it's better to build mounts for my Toyota RAV4 it's fwd

Hello, in discription you metion about 3M hardness of 80 but in datasheet they wrote 55-60. Do you think the Elongation is also important? The 3M has 700%. In europe we doesnt have this product, so i found a sealant with 380% elongation and 60 shore A based on Polymeer.

According to 3M this product has a Shore hardness of 60. Hello Jeff,
Thank you for contacting 3M,
The 3M™ Windo-Weld™ Super Fast Urethane, 08609 has a shore A hardness of 60.  Unfortunately we do not have an adhesive with that hardness.
Regards,
Don V.
U.S. Business Services Operations

I feel like I should drill the mounts where they need the most reinforcement, window weld the "tubes" and caps to do sorta the torque solutions thing, ideally keep NVH reasonable but get less deflection

Ok

Keep in mind that these polyurethane caulks/sealants/adhesives are ONE PART MOISTURE CURING polyurethanes. If you cast them too deep they won't cure properly. On non porous surfaces you should add a very fine mist of water. Some products can also foam or have voids, so beware. TWO PART polyurethanes will cure no matter what the thickness is.

better option is to use 2 part polyurathane it dries much fast

I like that accord

God so loved the world that He gave His one and only Son, that whosoever believes in Him shall not perish but have everlasting life.” John 3:16

3M window weld is the BEST by far.