filling motor mounts with poly

[bowlofturtle]

You can find like tons of videos on youtube of people doing them.

I just did one on the lancer. It seems the motor mounts from OEM last about a year and the aftermarket stuff last even less. I got annoyed of replacing them yearly. So i tried this, too soon to actually tell if it holds up but i dont see a reason why it shouldn't. I figured no matter what it couldn't hurt anything other then my pocket for $20 for 3m window weld.


Anyone have issues with this not holding up? Any negative effects? I kinda wanna do it all mounts i can find now. Since i bought the tube and its going to dry up at one point.

 

[mclasser]

Plenty of guys over on the Maxima forum do this. Other than a little extra vibration at idle, they seem to be happy.

 

[The motor guy]

I have a buddy with a v10 dodge and a heavy foot. He got tired of changing out the autozone motor mounts every 6 months so he filled them with some kind of hard epoxy and he seems pretty happy.

 

[JHZR2]

People do it for MB diesels too. I find the OE quality parts cheap enough to not be a concern, but if I had a vehicle that ate mounts, it seems like a good option.

 

[KingCake]

I have a car that's famous for eating torque strut mounts. Aftermarket ones last maybe 10K. Started filling them with Sikaflex from Home Depot. Sometimes the poly will separate from the mount. Depends on how well you prep it.

 

[JamesBond]

I filled the front mount on my civic, there was more vibration afterward but it either lessened or I got used to it, I plan to do the next one that breaks.

 

[OneEyeJack]

I used to own a 96 Volvo 850 turbo wagon that would eat the torque strut on top of the engine. I purchased an after market one and seasoned the bushings in a 400F oil bath for 2 hours and never had another problem.

We did this kind of stuff for airplane motor mounts when I worked in Alaska as a pilot many years ago as suggested by a de Havilland engineer. The bushings came from an aircraft supply house and we inserted them in the aftermarket strut.

 

[Kira]

I tried the "polybush" (a polyurethane replacement bushing) in my '99 V70 (same as previous poster) in my top mount and the shake was INSANE!
This shaking had been reported by many if not all those who tried.

I have packed the weathered, rubber element of our Saab's rear trans-to frame mount with GE silicone rubber and it is holding up fine.

This is a textbook "nothing to lose" exercise. Kira

 

[SwampSurvivor]

I didn't replace the engine mount with a poly one, but I did put in a poly filled dogbone/"torque restrictor" factory mount. Definitely like the shift feel and the better feedback I get back from the car itself and the clutch feedback feels normal.

Vibrations aren't too terrible, but they are definitely there. As long as I don't load the engine too much under 1500 it's not bad.