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Should I fill this motor mount with polyurethane? #4477777
08/02/17 08:46 PM
08/02/17 08:46 PM
Joined: Jan 2009
Posts: 2,481
Rochester, MI, US, World
Klutch9 Offline OP
Klutch9  Offline OP

Joined: Jan 2009
Posts: 2,481
Rochester, MI, US, World
Our Fusion has a bad motor mount on the passenger's side. It's a hydraulic mount, and looks like this...

The OEM mount went bad in about 6 years and 70,000 miles. I am replacing it with an aftermarket Anchor branded mount. Yes, I know I'm a bad person for buying an aftermarket mount. But the OEM mount didn't last long, so the aftermarket stuff can't be that bad, and I've successfully used this brand in the past.

But what I'm really looking to do it make this replacement mount bulletproof. This is a common failure point on these cars, and I don't want to spend almost $200 on an aftermarket poly performance mount. So here's the plan... the mount in question is indeed a hydraulic mount. It has a sealed 'bladder' that limits movement, as I understand it. But if you look at the picture, there is a small air void in the top of the mount that goes down a little ways; it's bigger than it looks. I was thinking of filling this with some polyurethane (Loctite construction adhesive, about $5. Google it). I'm thinking that this could prevent the rubber portion of the mount from moving excessively and tearing prematurely, like the OEM mount did. It certainly can't hurt anything. I'm not really worried about excess vibration. I'm more concerned about the mount being solid and not flopping around like a fish out of water.


'11 Fusion SE 2.5L - 83k miles - HK 0w20 syn, Wix XP filter
'08 Sedona LX LWB 3.8L - 129k miles - Havoline HM 5w20, Auto7 filter
Re: Should I fill this motor mount with polyurethane? [Re: Klutch9] #4477795
08/02/17 09:07 PM
08/02/17 09:07 PM
Joined: Dec 2011
Posts: 5,680
North Carolina
rooflessVW Offline
rooflessVW  Offline

Joined: Dec 2011
Posts: 5,680
North Carolina
3M Window-weld is the stuff you want.


"Zed's dead baby, Zed's dead."
Re: Should I fill this motor mount with polyurethane? [Re: Klutch9] #4477803
08/02/17 09:18 PM
08/02/17 09:18 PM
Joined: Dec 2006
Posts: 1,027
midwest
JamesBond Offline
JamesBond  Offline

Joined: Dec 2006
Posts: 1,027
midwest
Just fill the broken factory mount. If it works, you're good, if it doesn't, install the new mount. I filled a rubber mount on my honda, I let it dry for several days. There was more vibration but not too bad, it's worked fine for years now. I used construction sealant not adhesive, the sealant is a lower durometer.

Re: Should I fill this motor mount with polyurethane? [Re: Klutch9] #4477849
08/02/17 10:25 PM
08/02/17 10:25 PM
Joined: Nov 2009
Posts: 5,227
Houston, Texas
motor_oil_madman Offline
motor_oil_madman  Offline

Joined: Nov 2009
Posts: 5,227
Houston, Texas
I know a guy that went through autozone engine mounts every 6 months and did that and I think it worked or atleast made it a couple years in between changes. He only has two foot postions when driving. On the floor and off the floor.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: Should I fill this motor mount with polyurethane? [Re: rooflessVW] #4477851
08/02/17 10:29 PM
08/02/17 10:29 PM
Joined: Dec 2016
Posts: 8,046
Waco, TX
Linctex Offline
Linctex  Offline

Joined: Dec 2016
Posts: 8,046
Waco, TX
Originally Posted By: rooflessVW
3M Window-weld is the stuff you want.


Windshield urethane is an AMAZING glue/adhesive for many, many, many things.

1000X better than "duct tape" grin


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Should I fill this motor mount with polyurethane? [Re: Klutch9] #4477895
08/03/17 12:19 AM
08/03/17 12:19 AM
Joined: Feb 2013
Posts: 11,360
Phoenix, AZ
Nick1994 Offline
Nick1994  Offline

Joined: Feb 2013
Posts: 11,360
Phoenix, AZ
I'd fill it.

Don't bother with the aftermarket mounts, they really are that bad.


2015 Hyundai Sonata 2.4L 92k STP Synthetic HM 10w30 & Wix
2000 Toyota Camry 2.2L 233k Mobil Super HM 10w40 & Fram Ultra
1996 Jeep Cherokee 4.0L 148k Mobil 1 HM 10w40 & Fram Ultra
Re: Should I fill this motor mount with polyurethane? [Re: Klutch9] #4477913
08/03/17 01:54 AM
08/03/17 01:54 AM
Joined: Nov 2006
Posts: 21,282
MA, Mittelfranken.de
Trav Offline
Trav  Offline

Joined: Nov 2006
Posts: 21,282
MA, Mittelfranken.de
I fear you are embarking on a fools errand right from the get go with this project.
The Anchor brand is pure garbage if the original lasted 6 yrs you will be lucky to get 6 months if not weeks out of it before you feel vibration.
Filling it with poly is going to cause vibration, when its all said and done you will buy an OE mount to get another 6 years and chalk it up to a lesson learned.


ASE L1, Master. Deutsch Meisterbrief.
Re: Should I fill this motor mount with polyurethane? [Re: Trav] #4477917
08/03/17 02:13 AM
08/03/17 02:13 AM
Joined: Jun 2015
Posts: 581
New York
NoNameJoe Online content
NoNameJoe  Online Content

Joined: Jun 2015
Posts: 581
New York
Originally Posted By: Trav
I fear you are embarking on a fools errand right from the get go with this project.
The Anchor brand is pure garbage if the original lasted 6 yrs you will be lucky to get 6 months if not weeks out of it before you feel vibration.
Filling it with poly is going to cause vibration, when its all said and done you will buy an OE mount to get another 6 years and chalk it up to a lesson learned.


I agree about Anchor. Just put one in an Anchor brand mount a month ago, was really nice for the first few days. Now it's vibrating worse than the broken OEM one. It's vibrating so bad I can feel the vibrations when I rest my hand on the fender.

Going to put the broken OEM one back in since it's easy to do on this car and if the vibrations are less I'm just going to buy a new OEM one, lesson learned.


2015 Civic LX Coupe
Re: Should I fill this motor mount with polyurethane? [Re: Trav] #4477918
08/03/17 02:16 AM
08/03/17 02:16 AM
Joined: Nov 2004
Posts: 7,870
Texas
GMBoy Offline
GMBoy  Offline

Joined: Nov 2004
Posts: 7,870
Texas
Originally Posted By: Trav
I fear you are embarking on a fools errand right from the get go with this project.
The Anchor brand is pure garbage if the original lasted 6 yrs you will be lucky to get 6 months if not weeks out of it before you feel vibration.
Filling it with poly is going to cause vibration, when its all said and done you will buy an OE mount to get another 6 years and chalk it up to a lesson learned.




I agree and respect Trav's advice. Besides, if the automakers thought that sealing a mount would be a good thing - they would be doing it or somebody in the aftermarket would be selling a "problem solver" mount with that modification. You are basically starting with a turd mount anyhow with the Anchor brand so go ahead and see what happens because you will be changing it out soon anyhow. (I used Anchor before and stopped after experiencing early failures 3 times on 3 different make/model vehicles and a 4th where the mount was so poorly contructed and off center I couldn't even use it.)

Re: Should I fill this motor mount with polyurethane? [Re: Trav] #4477924
08/03/17 03:31 AM
08/03/17 03:31 AM
Joined: Dec 2005
Posts: 1,192
Kennett Square, PA
artbuc Offline
artbuc  Offline

Joined: Dec 2005
Posts: 1,192
Kennett Square, PA
Originally Posted By: Trav
I fear you are embarking on a fools errand right from the get go with this project.
The Anchor brand is pure garbage if the original lasted 6 yrs you will be lucky to get 6 months if not weeks out of it before you feel vibration.
Filling it with poly is going to cause vibration, when its all said and done you will buy an OE mount to get another 6 years and chalk it up to a lesson learned.



Agree! I filled the dog one mount on my Toyota V6 1MZFE engine with 3M Window-Weld as shown on many DIY videos. The vibration felt in the cabin rattled my teeth.

Last edited by artbuc; 08/03/17 03:33 AM.
Re: Should I fill this motor mount with polyurethane? [Re: Klutch9] #4477930
08/03/17 03:57 AM
08/03/17 03:57 AM
Joined: Jan 2011
Posts: 2,950
N.Ohio
Lubener Offline
Lubener  Offline

Joined: Jan 2011
Posts: 2,950
N.Ohio
Filling it = more vibrations.


The "thinking" man's friend.
Re: Should I fill this motor mount with polyurethane? [Re: Klutch9] #4477934
08/03/17 04:31 AM
08/03/17 04:31 AM
Joined: Jul 2005
Posts: 31,715
NY
demarpaint Offline
demarpaint  Offline

Joined: Jul 2005
Posts: 31,715
NY
I'd go OE, and not fill or tamper with it. I'd be willing to bet it will outlast the aftermarket mount by several years.


God Bless Our Troops

Re: Should I fill this motor mount with polyurethane? [Re: Klutch9] #4477963
08/03/17 06:57 AM
08/03/17 06:57 AM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline

Joined: Jan 2007
Posts: 17,501
Clovis, CA
Hydraulic engine mounts are a BandAid covering up an engine with the jitters from other problems. These new cars are supposed to run like a Swiss watch even with solid steel mounts.

Re: Should I fill this motor mount with polyurethane? [Re: Klutch9] #4477964
08/03/17 06:59 AM
08/03/17 06:59 AM
Joined: Dec 2009
Posts: 430
The Orca
quint Offline
quint  Offline

Joined: Dec 2009
Posts: 430
The Orca
I have two Anchor mounts in my Corolla and so far they have held up for several years with very little vibration. I knew their reputation before I bought them but I wasnt about to spend $200 for mounts in a 300,000+ mile Corolla. But so far, so good.....From all the negative press on forums I'm sure I'm in the very small minority with them actually doing ok.

Before I got the Anchors I originally filled the worn out factory mounts and that was a lesson in what not to do, the vibration was horrific at best. I don't know why filling mounts gets recommended the way it does on so many forums. Their wasn't a single piece on the car that didn't vibrate horribly with filled mounts. Never again.

Go OEM, the people who work on cars every day know from experience what they are talking about.

Re: Should I fill this motor mount with polyurethane? [Re: Klutch9] #4478020
08/03/17 08:31 AM
08/03/17 08:31 AM
Joined: Aug 2012
Posts: 789
Lynchburg, VA, USA
SF0059 Offline
SF0059  Offline

Joined: Aug 2012
Posts: 789
Lynchburg, VA, USA
It is a common "performance upgrade" to install solid polyurethane mounts. However, the NVH tradeoff is drastic. I don't think you experience filling OEM style mounts will be much different. So the question is, are you willing to trade NVH for a solid mount or are you willing to replace the OEM again in 6 years?


2014 Honda Odyssey EX-L/RES: 54K mi, M1 0w-40 & FU, VCMuzzler V2
2017 Mazda 6 Touring 6MT: 22k mi, M1 AFE 0w20, OEM Filter
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