[Twinning_N54]

Any thoughts on adding window weld to a new set of motor mounts?

seems like an easy, cheap modification that would add some stiffness without much NVH (Noise, vibration, and harshness)

but I wanted to know if anyone had any real thoughts on the idea?

I know the IS mount is an upgrade but I wanted to explore this option.

youtuber Vehicular DIY

[Soravia]

You can also use Polyurethane mixes. But here's the kicker, the bottom piece is still filled with liquid.
Good if you want less vibration, bad if you want performance of a solid rubber.

Not sure how long that window weld will last next to engine heat. There's a ton of heat on turbo.

[Twinning_N54]

Originally Posted by Soravia

You can also use Polyurethane mixes. But here's the kicker, the bottom piece is still filled with liquid.
Good if you want less vibration, bad if you want performance of a solid rubber.

Not sure how long that window weld will last next to engine heat. There's a ton of heat on turbo.

That's a good question, I'm guessing window weld wasn't made to withstand exhaust heat for long periods of time.

I just settled on just installing OEM motor mounts and will work on other parts of the suspension like the sway bars.

thanks!

[Soravia]

Originally Posted by Twinning_N54

That's a good question, I'm guessing window weld wasn't made to withstand exhaust heat for long periods of time.

I just settled on just installing OEM motor mounts and will work on other parts of the suspension like the sway bars.

thanks!

You CAN put in poly AFTER the install. Buy large syringes with tube from Amazon for $10 or so. Put in the poly using tube. I paid $26 or so for 2 lb of poly mix.

About to put in poly on new cheap mounts I just bought. I will try to drill the OE mount BOTTOM and see if I want to replace the liquid that way in the new one as well.

[bbnks2]

Originally Posted by Soravia

You CAN put in poly AFTER the install. Buy large syringes with tube from Amazon for $10 or so. Put in the poly using tube. I paid $26 or so for 2 lb of poly mix.

About to put in poly on new cheap mounts I just bought. I will try to drill the OE mount BOTTOM and see if I want to replace the liquid that way in the new one as well.

you could just buy new mounts and be done with it lol. Iv'e messed with poly filling things plenty and it never lasts more than a year or two. Just not worth it for all the labor involved. But as these cars become dirt cheap im sure we'll be seeing more stuff like this.

[Soravia]

Originally Posted by bbnks2

you could just buy new mounts and be done with it lol. Iv'e messed with poly filling things plenty and it never lasts more than a year or two. Just not worth it for all the labor involved. But as these cars become dirt cheap im sure we'll be seeing more stuff like this.

I'm filling the NEW ones with polyurethane!

Have to make sure the bottom holes are plugged though. Duct tape will work.
The liquid is not thin.

[slanteyez]

Anyone know if window weld can withstand the high heat from the turbo?

[Soravia]

Originally Posted by slanteyez

Anyone know if window weld can withstand the high heat from the turbo?

You can always put some heat shield tape over them, or tin foil you wanna be ghetto super star?
I have some extra foil tape strips, I might think of it when I swap headers to AFE.

[Twinning_N54]

Originally Posted by bbnks2

you could just buy new mounts and be done with it lol. Iv'e messed with poly filling things plenty and it never lasts more than a year or two. Just not worth it for all the labor involved. But as these cars become dirt cheap im sure we'll be seeing more stuff like this.

what happens after a year or two? does the filling break down from the heat or stress?

[streetpro]

Originally Posted by Twinning_N54

what happens after a year or two? does the filling break down from the heat or stress?

window bond/weld won't do anything, it stays in place, filling the gap... the same with epoxy, I doubt it cracks and slips away...

[bbnks2]

Originally Posted by streetpro

window bond/weld won't do anything, it stays in place, filling the gap... the same with epoxy, I doubt it cracks and slips away...

Get back to me in a year and say the same. Two different durometers, molded at separate times, will inevitably separate from one another. Especially "window weld" since it's not actually poly. It will harden and crack away. Quick google search shows just about anyone who as ever done it say the same.

[streetpro]

I agree... it does harden and crack away but as long as has no chance to fall anywhere, it just stays and prevent excessive movements...