Author Topic: Polyurethane Front Motor Mount Install <pics>  (Read 3577 times)

Offline Ed Altizer

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Polyurethane Front Motor Mount Install <pics>
« on: July 23, 2010, 12:08:41 am »
Hey dsmers
Was working on my Fmic install when  I noticed the front motor mount was toast and ended up fixing that today.  Here is some info, with pictures.  Kinda starts after I pulled the mount off…

The rubber insert was squashed and the motor was practically resting on the crossmember.
Notice how the bolt isn't even the correct size? That's strange ???


Bought a new bolt to fit the new poly bushing.  Huge difference!


Tried pressing out the old bushing...but that didn't work because it would just damage the mount bracket.


So...Enter 'reciprocating saw'
Of course you only cut thru the insert metal sleeve and not the mount bracket.  Next use a punch to slightly separate it from the bracket, then hammer it out over a vise.
   

Add grease to the poly bushing and press it into the mount bracket.  A large vise would work here also.


Now you’ll notice the new bolt is too big for the hole on the engine bracket…


So…simply drill it out slightly larger than the bolt.


Reinstall the new motor mount
To line the bushing up with the engine bracket to insert the new bolt, I was able to place a small piece of wood on the engine bracket, right beside the clutch slave cylinder, and use my floor jack to lift the engine up.  Some have suggested putting a jack under the oil pan to raise the motor, but I found it didn’t lift high enough, before lifting the whole car.  I also had to pry the engine bracket in the direction of the firewall to finish lining up the holes for the bolt.   The last picture is where I placed the prybar.  Of course, in these last few pictures I had already pushed the bolt thru the mount assembly.


Thought I’d post this to give members, perhaps ‘less mechanically inclined’, a heads up on this install.
« Last Edit: August 02, 2010, 11:30:34 pm by Ed Altizer »
2010 Dodge Ram 1500 Laramie
        2015 Ford Explorer Sport
2002 Suzuki Katana 750
     1994 Eagle Talon TSi - Sold

Offline Ryan Coft

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Re: Polyurethane Front Motor Mount Install <pics>
« Reply #1 on: July 23, 2010, 01:52:39 am »
Moved this to our review forum because it's a great write up on "how-to"

Offline Jason Harwood

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Re: Polyurethane Front Motor Mount Install <pics>
« Reply #2 on: July 23, 2010, 06:40:02 am »
I had the same thing happen when I did my 6 bolt swap, I noticed the bolt on the 2G was too small and the bolt hole was too. Drilled it out, but yea, then the vibrations got worse, lol
88' MX6 Turbo - 14.2 @ 97.51MPH
94' MX6 V6 - 13.9 @ 96.7MPH
93' Civic Turbo - 14.7 @ 90MPH (bad tune)
90' Civic SI - Auto-X Machine
97' Eclipse GSX 13.6 @ 105MPH
96' Jeep Grand Cherokee Laredo
97' Acura EL 14.5 @ 98MPH
'02 Lexus IS300 15.125 @ 91MPH
97' CR-V Winter Beater.
04' WRB WRX STI

Offline Brett Haviland

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Re: Polyurethane Front Motor Mount Install <pics>
« Reply #3 on: July 23, 2010, 08:17:23 am »
yeah mitsubishi has the smaller bolt like that to keep a bit of movment/slack i guess.
The rear mount is the same thing.
I like Colts.  Turbo Colts.

Offline Ed Altizer

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Re: Polyurethane Front Motor Mount Install <pics>
« Reply #4 on: July 23, 2010, 05:23:34 pm »
You'd think the smaller bolt thru the larger hole would cause the factory bushing to fail quicker.  Bad design Imo.
And yes, that's what I've been hearing too...extra motor vibrations from the poly bushing.  But it's still a good trade off to keep the engine stable when increasing hp. 8)  I think , lol.
Next I'll be replacing the driver side bushing...And the last two will wait untill my clutch job.

Cheers!
2010 Dodge Ram 1500 Laramie
        2015 Ford Explorer Sport
2002 Suzuki Katana 750
     1994 Eagle Talon TSi - Sold

Offline John Hartman

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Re: Polyurethane Front Motor Mount Install <pics>
« Reply #5 on: July 24, 2010, 08:13:30 am »
Nice job Ed.
91 Eagle Talon TSi 5spd awd.  GT-12, TriFlow Cams, 850s, Tial, JIC, Jackal, sticky rubber.
86 Merkur XR4Ti 5spd, rwd, turbo, 91,381km.  Original paint, heated leather. intercooled, big VAM, Full 3" exhaust, Cossie sway bar, 16" tires.
06 Mazdaspeed6 6spd awd, DISI turbo, heated leather HIDs, Corksport, Cobb, Konig, Centric...
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Offline daniel Dee

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Re: Polyurethane Front Motor Mount Install <pics>
« Reply #6 on: August 20, 2010, 06:38:10 am »
My motor mounts pressed out okay without issues..I don't recall having a sizing issue with the bolt.
92 AWD TSI 5spd<br />Built motor ,AEM EMS, Arc2 cdi 1050cc&1000cc Staged injectors Billet S366 T4,top mount manifold.666 AWHP@39psi (RG Dyno 2010). New mods E85, BF cams, 72mm turbo, 70mm throttle body />90 TSI (gone), 95 TSI 5 spd sold, 93 Mazda 5sp(sold), 97 Acura 5spd Vtec 99 Audi A4 quad 5sp 2018 Civicturbo 6sp ktuner

Offline Jason Harwood

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Re: Polyurethane Front Motor Mount Install <pics>
« Reply #7 on: August 20, 2010, 06:51:20 am »
My motor mounts pressed out okay without issues..I don't recall having a sizing issue with the bolt.


Its a 2g thing yo!
88' MX6 Turbo - 14.2 @ 97.51MPH
94' MX6 V6 - 13.9 @ 96.7MPH
93' Civic Turbo - 14.7 @ 90MPH (bad tune)
90' Civic SI - Auto-X Machine
97' Eclipse GSX 13.6 @ 105MPH
96' Jeep Grand Cherokee Laredo
97' Acura EL 14.5 @ 98MPH
'02 Lexus IS300 15.125 @ 91MPH
97' CR-V Winter Beater.
04' WRB WRX STI

Offline Brett Haviland

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Re: Polyurethane Front Motor Mount Install <pics>
« Reply #8 on: January 18, 2011, 08:03:42 pm »
oh i also found out.. the small size of the bolt doesnt matter.  When you tighten it all down the teeth on the end of the sleeve lock the bushing to the metal mount that is around it...  so it wont move...

sorry old post revived.. ahahha gotta get something going
I like Colts.  Turbo Colts.

Offline Jordan Kruger

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Re: Polyurethane Front Motor Mount Install <pics>
« Reply #9 on: January 18, 2011, 10:21:56 pm »
If youre worried about the gap with the bolt just put a hose over the bolt. thats what I did.
337awhp.  ---> 500 awhp ? =)

Replacing parts since early 2010.

Offline daniel sanat

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Re: Polyurethane Front Motor Mount Install <pics>
« Reply #10 on: January 18, 2011, 10:30:49 pm »
I'm going to attempt to do all 4 mounts on my car tomorrow Looks like a real bugger to do
1992 talon tsi

Offline daniel Dee

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Re: Polyurethane Front Motor Mount Install <pics>
« Reply #11 on: January 19, 2011, 12:19:07 am »
Your bench press looks exactly like the one I used.
You don't need to cut inside to press it off.
Use round block small enough to fit inside the bracket.
Pressing on mostly the old rubber part the whole thing (including the steel circle) will press out.
All 4 mounts on my 1g were done that way

 
92 AWD TSI 5spd<br />Built motor ,AEM EMS, Arc2 cdi 1050cc&1000cc Staged injectors Billet S366 T4,top mount manifold.666 AWHP@39psi (RG Dyno 2010). New mods E85, BF cams, 72mm turbo, 70mm throttle body />90 TSI (gone), 95 TSI 5 spd sold, 93 Mazda 5sp(sold), 97 Acura 5spd Vtec 99 Audi A4 quad 5sp 2018 Civicturbo 6sp ktuner

Offline Brett Haviland

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Re: Polyurethane Front Motor Mount Install <pics>
« Reply #12 on: January 19, 2011, 12:21:48 am »
agreed...  if you have a press.....  you can just press out the old rings/bushings.
I like Colts.  Turbo Colts.

Offline daniel sanat

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Re: Polyurethane Front Motor Mount Install <pics>
« Reply #13 on: January 19, 2011, 12:14:09 pm »
Easier than I thought I already have one done it took 10 mins with a hammer,  big flathead, and a punch ...... Watt chu know about radio ?
1992 talon tsi

Offline Ed Altizer

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Re: Polyurethane Front Motor Mount Install <pics>
« Reply #14 on: January 25, 2011, 05:47:22 pm »
oh i also found out.. the small size of the bolt doesnt matter.  When you tighten it all down the teeth on the end of the sleeve lock the bushing to the metal mount that is around it...  so it wont move...

sorry old post revived.. ahahha gotta get something going


Mystery Solved with the smaller bolt...Thanks Brett, that makes sense.

And Daniel, It was the lower part of the press where the steel plates were slipping outwards, off the edge of the bracket...I could have just used a bar clamp to hold them but figured cutting the mount would eliminate any issues if it was even slightly rusted in there. And it only took a few minutes to do.  When I do replace the other mounts, I'll probably just press them ;)

Rubber hose around the bolt is another good idea too Jordan :)

And thanks to everyone with all their input...a definite help to those new in the 'dsm world'

Cheers!
2010 Dodge Ram 1500 Laramie
        2015 Ford Explorer Sport
2002 Suzuki Katana 750
     1994 Eagle Talon TSi - Sold