Questions About Motor Mounts and Tips For Filling Them With Poly

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Old Nov 5, 2006 | 04:53 PM
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Questions About Motor Mounts and Tips For Filling Them With Poly

ok, so i changed out my side and front mounts yesterday. wasn't too bad but i didn't really have a good understanding of how to get the front mount out when i had the engine jacked up so i ended up just removing the piece bolted to the engine that holds it in place. came out easy enough then.

i had filled them with poly beforehand and let them sit for 5 days but apparently it wasnt enough of a drying time because plenty of fresh poly came out when then weight of the engine sat on the front mount. regardless, the mounts definitely are making a difference but have any of you guys salvaged your old mounts by filling them with poly or do you always use new mounts for something like this?

so here's my tip: don't just go and fill up that front mount and put it somewhere to sit. fill up the inside of it maybe 1/3 at a time and let it dry properly. then go back and do the next 1/3 and then the final. otherwise you'll have all sorts of wet poly oozing out when the engine rocks on it. that and when your exhaust heats up it will weaken the nice job you had done. chances are i'll just redo mine over the summer. well just the front at least. so i can let it dry properly. most likely i'll buy another front mount, fill it, swap it and fix up the other one and sell it or something.

oh yeah, another question....for the front mount, the round disc inside of the mount that carries the weight shouldn't have any play in it, right? ( up and down play) and any fluid magically coming out of the mount pretty much means the hydraulic part is shot, right? thanks guys!

Bob (SSTS)
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Old Nov 6, 2006 | 05:49 PM
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allright, well perhaps i should post another question....

when the engine is at rest on the front mount you can see it's compressed about 1cm or so. the wet poly inside the mount oozed out on top and solidified, essentially locking the mount in that position. will this compromise the function of the mount or is it fine to leave? otherwise i'll just fill the old broken mount and put it back in or something.

SSTS
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Old Nov 7, 2006 | 01:43 PM
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bump.....i know someone has an answer out there.....
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Old Nov 7, 2006 | 02:50 PM
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How much did your new mounts run you? I am in need of replacing mine!!
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Old Nov 7, 2006 | 03:11 PM
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Originally Posted by special e. dition
How much did your new mounts run you? I am in need of replacing mine!!
if i recall it was about $200 including tax and shipping for both of them off of the parts site. not a tough job at all, but it took me a little while to figure out what i was doing since i couldn't seem to get the front mount out. plus acura wanted somewhere around $650 to do the work (with parts).

SSTS
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Old Nov 7, 2006 | 03:22 PM
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Originally Posted by special e. dition
How much did your new mounts run you? I am in need of replacing mine!!
http://www.acuraautomotiveparts.org/...prddisplay.jsp
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Old Nov 9, 2006 | 06:36 AM
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c'mon guys. i know one of you has the answer out there. help a brother out.....pretty please.....with sugar on top.

Bob
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Old Nov 9, 2006 | 06:42 AM
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You already comprimised the mount by filling it. I dont think its going to do any more harm having a little squeezed out.
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Old Nov 9, 2006 | 07:52 AM
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Originally Posted by fsttyms1
You already comprimised the mount by filling it. I dont think its going to do any more harm having a little squeezed out.
well i guess the first question is how does this compromise the mount it when it's supposed to improve it? maybe it's time we break some of the myths on the board here then. no body has come out in any of the other posts on this topic and said that it's a bad idea to fill these things.

my other concern isn't that it squeezed out. it's regarding the position the mount is locked into now and whether i should correct it.

Bob
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Old Nov 9, 2006 | 12:09 PM
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Im not saying its bad to fill it, but they are vacum assisted. And by filling any gaps or any of the chambers that help in smoothing the idle out or stiffining it up wont work as it was intended
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Old Nov 9, 2006 | 12:15 PM
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Originally Posted by fsttyms1
Im not saying its bad to fill it, but they are vacum assisted. And by filling any gaps or any of the chambers that help in smoothing the idle out or stiffining it up wont work as it was intended
ok, i see what you're saying then. maybe i'll just get another new one and swap it out to compare the ride quality and such.

maybe you can answer this question though. when you look at the mount it has a disc in it that supports the weight from the extension bolted to the engine block. do you know if that disc travels the full height of the gap in the mount?

i would assume it does but i have no real way of knowing. i would imagine that full compression occurs during shifting and high revs when the engine rocks forward and full extension occurs at some point in the game. when it's at rest or at idle though it's compressed about 1cm. just wondering how much that mount actually is supposed to move.

Bob
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Old Nov 9, 2006 | 07:58 PM
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I did mine, but didn't use poly, used window sealant, and it dried as a nice hard piece of rubber.

Mine were 200 for the front and side.

There was no squeezing out when I replaced mine. Shouldn't be a big deal.

I don't notice a significant change in ride quality
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Old Nov 9, 2006 | 08:16 PM
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Originally Posted by SatinSilverTypS
ok, i see what you're saying then. maybe i'll just get another new one and swap it out to compare the ride quality and such.

maybe you can answer this question though. when you look at the mount it has a disc in it that supports the weight from the extension bolted to the engine block. do you know if that disc travels the full height of the gap in the mount?

i would assume it does but i have no real way of knowing. i would imagine that full compression occurs during shifting and high revs when the engine rocks forward and full extension occurs at some point in the game. when it's at rest or at idle though it's compressed about 1cm. just wondering how much that mount actually is supposed to move.

Bob
I dont think its supposed to really move much at all. You dont want teh motor to move at all. But to have it bolted directly would cause vibrations. Thats the purpous of having mounts. they ate supposed to hold the motor but isolate it from vibration. Ours are a vacum/liquid mout. Under load they are supposed to firm up to limit movement, and under idle they are supposed to soften up to quell vibrations
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Old Nov 9, 2006 | 09:16 PM
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isn't the reason to fill the mounts with poly to make them stronger and more durable. the reason a bunch of AV6 guys have done this is to prolong reliability and functionalitiy from the mounts as the stock ones tend to fail far too early.i was seriously considering doing this when I replace my front and side mounts soon. can someone here shed some light if filling the mounts with poly is even worth doing on the TL?
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Old Nov 9, 2006 | 11:29 PM
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Originally Posted by sbuswell
isn't the reason to fill the mounts with poly to make them stronger and more durable. the reason a bunch of AV6 guys have done this is to prolong reliability and functionalitiy from the mounts as the stock ones tend to fail far too early.i was seriously considering doing this when I replace my front and side mounts soon. can someone here shed some light if filling the mounts with poly is even worth doing on the TL?
i would imagine if you were pushing alot of power it would help. i did it to make the mounts more durable and firm up the shifts, although i have almost 100k miles and this is the first mount thats gone bad on me. although it seems to be an issue with other people.

i don't think it wouldn't be worth it but then again i don't think it would be this great thing that i would recommend to everyone. i'm in the middle with it. i do think i have more power to the ground. i've noticed i have to feather the throttle more when i go from a light or stop sign to keep from spinning. although this could just be me. i'll let you know.

Bob
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Old Nov 10, 2006 | 05:59 AM
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Originally Posted by SatinSilverTypS
i do think i have more power to the ground. i've noticed i have to feather the throttle more when i go from a light or stop sign to keep from spinning. although this could just be me. i'll let you know.

Bob
I could be completely misunderstanding what you wrote, so I wanted to clarify. Are you implying you feel you have more power to the wheels simply because you've added poly to the motor mounts??

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Old Nov 10, 2006 | 08:20 AM
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Originally Posted by Street Spirit
I could be completely misunderstanding what you wrote, so I wanted to clarify. Are you implying you feel you have more power to the wheels simply because you've added poly to the motor mounts??

technically its possibel just due to less twisting and rocking of the motor. any time that happens your essintually loosing power. How much???
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Old Nov 10, 2006 | 04:32 PM
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street sprint, allow me to clarify: yes, i do feel traction is slightly increased because i do have to take more care in feathering the throttle from a stop when it's wet out than i have in the past (we had some massive rains here the other day so i found out the hard way). not that the car is making more power because of the mount, i'm just delivering it more efficiently. i assume you were under the impression that i thought i was making more bhp because of it, but i assure you i'm not a dumbass.

SSTS
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Old Nov 10, 2006 | 06:21 PM
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i feel that i am loosing power because my front mount is shot. traction is an issue for me. the nose raises more than it should and it clunks between shifts sometimes even when i'm parked, too much rocking going on. i think i;ll just replace them and not go with poly and see how that works out. maybe i'll keep my old ones and fill them with poly and let them sit for several months, but being that firm I assume there with be some serious vibration issues.
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Old Nov 11, 2006 | 07:19 AM
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Originally Posted by sbuswell
maybe i'll keep my old ones and fill them with poly and let them sit for several months, but being that firm I assume there with be some serious vibration issues.
you should definitely replace your mounts if you're having that problem. as far as the poly goes i haven't noticed any increase in cabin vibes. once the car is warm and lubed its as smooth as it was before. maybe a smidge rougher, but i am being completely honest when i tell you i can't even notice. that may be because i only did the front and side mount and not the back. i dunno.

Bob
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