poly mounts/Or DIY stock mount fill?

[mattdouken]

ok, so i need new mounts and i have looked at all the threads..

The question i need answered is will filling my stock mounts with 3M window fill be just as stiff and reliable as the full poly mounts from twosrus?

Im just looking to save a little cash maybe..

[mrjimmyx]

Originally Posted by mattdouken

ok, so i need new mounts and i have looked at all the threads..

The question i need answered is will filling my stock mounts with 3M window fill be just as stiff and reliable as the full poly mounts from twosrus?

Im just looking to save a little cash maybe..

I would love to know this also as I am on the same boat as you!

[Maruki-kun]

no, it would be like kirks mounts

[Redstar]

I've been happy with this stuff:

Liquid,Rubber,1 Lb - Putties - Putties - Adhesives, Sealants, & Tape : Grainger Industrial Supply

[nocashrider]

im using the poly mounts and i can definately tell you i can hear and feel the engine alot more now since it transfers more vibrations through the mounts. that being said i definately dont feel the engine jerk as much as it did with the stock mounts when i get on it

[Jon3sgte]

I was told that having the mounts too stiff is a bad thing? Someone in phoenix ripped out a tranny mount doing this. How long has everyone been running these mounts?

[TomsMR2]

i cut up a timing belt and wrapped it around the rubber works fine. 1000x less annoying than the kirks. i couldnt stand the kirks once i started actually driving the car more than a couple miles a day.

theres no tangible benefit to rattling your brains out with solid mounts. people think its "racy", but its not. its just annoying. id recommend new mounts, but if you're just trying to save some cash, the windoweld will be fine.

you gotta remember that our cars are old now. most of the engine clunking is from completely, absolutely shot engine mounts. new mounts will stop the engine clunking around.

[328FTW]

Originally Posted by Jon3sgte

I was told that having the mounts too stiff is a bad thing? Someone in phoenix ripped out a tranny mount doing this. How long has everyone been running these mounts?

I ripped a mount clean through the body on one car, it was a stock mount. I was about 5 feet off the ground doing 60mph just before that happened but I think you would be unlucky to snap something or doing things that would cause more concern than a gearbox mount. I run filled ones now and have been for about 4 years on one car.

[nocashrider]

ive been running the solidmounts for about 2 years now and the only time i really notice the vibrations or the noise is on start up and just getting going from a dead stop

[mattdouken]

yes ,well my stock mounts are shot,and new ones cost 50 bucks a piece compared to 80 for the front and back solids from twosrus.
I just want to save a little cash for now.So i am going to fill them.

But filling the broken mounts will work just as well right?
It will stiffin the engine up better than stock mounts right?
Thats all i really want to know.

I can careless as for noises and vibrations ,the MR2 wasnt designed to be quiet the engine is not even 2ft away from the back of your head for crying out loud....

[mattdouken]

can anyone answer those questions for me???im kinda on a time limit....

[328FTW]

It should improve shot mounts and should be stiffer than stock but not rigid and hard, I run ones filled with sikaflex (something like that anyway). I used that and haven't had an issue, its just I brought white not black since its all they had on the shelf and white sticks out but not a problem otherwise.

[TomsMR2]

Originally Posted by mattdouken

I can careless as for noises and vibrations ,the MR2 wasnt designed to be quiet the engine is not even 2ft away from the back of your head for crying out loud....

mr2's were very quiet and comfortable stock. people do ghetto hack repairs that make them noisy and buzzy.

the stock mounts work. no downsides. aftermarket mounts work, noisy buzzy downside with no benefits. if you're just trying to save money, go ahead and fill them, but no sense trying to convince yourself you're doing yourself a favor making your car rattle.

[mattdouken]

Originally Posted by TomsMR2

mr2's were very quiet and comfortable stock. people do ghetto hack repairs that make them noisy and buzzy.

the stock mounts work. no downsides. aftermarket mounts work, noisy buzzy downside with no benefits. if you're just trying to save money, go ahead and fill them, but no sense trying to convince yourself you're doing yourself a favor making your car rattle.

Why do you insist on trying to convince me that solid poly mounts serve no purpose.....they stiffin the driveline greatly so theres more power to the ground.

Hence why solid metal mounts are on drag cars or the engine is welded to the chassis ...

Yes i know im not making a ridiculous amount of power,but solid mounts will do there job non the less.

and as long as my engine stops bouncing back and forth ...and i dont have to pay 100 dollars for two stock mounts ,i will be happy.

Back on topic..3M windowseal is good and cheap or is there something better to fill them with??

[rotorguy2]

i have m3 windowseal in my car and don't feel any stiffer then stock but the motor move's a lot less now and it was 18 buck's for a tube at auto zone. oh and i have less wheel hop too and get the black window weld it's better.

[328FTW]

Originally Posted by mattdouken

Why do you insist on trying to convince me that solid poly mounts serve no purpose.....they stiffin the driveline greatly so theres more power to the ground.

Hence why solid metal mounts are on drag cars or the engine is welded to the chassis ...

Only instantaneously on takeoff and its so small a difference as to be not noticable, what is noticable however is the jerking on the drivetrain and engine vibrations. Drag cars do it because they use the engine to brace the chassis somewhat and they are certainly not worried about vibrations so do whats easiest and wont tear (steel).

I run hard mounts on my racecar because its whats easiest. I also would wear and tear the mounts if they had much movement I thrash the crap outa the car on gravel

Originally Posted by mattdouken

and as long as my engine stops bouncing back and forth ...and i dont have to pay 100 dollars for two stock mounts ,i will be happy.

Back on topic..3M windowseal is good and cheap or is there something better to fill them with??

That sikaflex is what was recommended to me, your basically looking for something that is really hard and rubbery, I used a clear window sealer and even though I let it cure it "squished" out (technical term)

[mattdouken]

thanks ....you did what i plan on doing and you gave me a simple and strait answer...much appreciated.

[mattdouken]

Originally Posted by 328FTW

Only instantaneously on takeoff and its so small a difference as to be not noticable, what is noticable however is the jerking on the drivetrain and engine vibrations. Drag cars do it because they use the engine to brace the chassis somewhat and they are certainly not worried about vibrations so do whats easiest and wont tear (steel).

I run hard mounts on my racecar because its whats easiest. I also would wear and tear the mounts if they had much movement I thrash the crap outa the car on gravel




That sikaflex is what was recommended to me, your basically looking for something that is really hard and rubbery, I used a clear window sealer and even though I let it cure it "squished" out (technical term)

ok wit that said does anyone think the 3M wil "squish out"??

[rotorguy2]

for the diy poly mount's you have too let them bake in the sun for 2 hrs and cure for 24 hrs.

[328FTW]

Originally Posted by mattdouken

ok wit that said does anyone think the 3M wil "squish out"??

Shouldn't, just give it a full day as said mine had a full day but I dunno it never really went off. It felt really uncured and I could change its shape maybe it was just a bad bit of glue.