Can you use silicon to fill motor mounts?? I need help.

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Old Oct 10, 2003 | 01:08 AM
  #1  
crex23's Avatar
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From: Alcoa, TN, USA
Default Can you use silicon to fill motor mounts?? I need help.

Here's my situation. I have a CRX with a 93 LS swap. The mount points on the motor were re-welded by the previous owner, so stock mounts were used. The rubber inside 2 of the mounts are trashed, so I ordered all 3 mounts brand new. I also ordered a set of 3 Energy Suspension urethane inserts since I drag race the car. Problem is, only 1 set of the 3 inserts fits the mounts.

Here is the first mount (I think the drivers side mount). The inserts fit perfectly on this mount.


Here is the next mount (not sure which one). As you can see, it's pretty well filled in from the factory, so I'm not too worried about it.


This is the mount in question. You can see that it's really open, and gives very easily.



These are the remaining urethane inserts, which don't fit in any of the mounts.


My question is about the last mount. It seems I read somewhere that you can use clear silicon to fill in the holes around the mount to make it stiffer (like with the inserts). Is this true? What do you guys recommend?

I don't mean to sound like such a dumbass, but it seems like everything I buy for this car does not fit at all Please help.

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Old Oct 10, 2003 | 01:11 AM
  #2  
USDM 4G VTEC's Avatar
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Default Re: Can you use silicon to fill motor mounts?? I need help. (crex23)

u got the wrong set of ES bushings....

as i look the second pic of the inserts.... those are for 88-91 civic..... look as the sme ones i have installed.... if so they are the front and rear tranny mounts for D series..... they wont work on ur LS mounts...... go buy the 93 ls mount inserts
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Old Oct 10, 2003 | 01:12 AM
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JCracer723's Avatar
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Default Re: Can you use silicon to fill motor mounts?? I need help. (crex23)

use Polyurethane to fill in the mount... u can find it at your local hardware store
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Old Oct 10, 2003 | 01:26 AM
  #4  
crex23's Avatar
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Default Re: Can you use silicon to fill motor mounts?? I need help. (USDM 4G VTEC)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by USDM 4G VTEC &raquo;</TD></TR><TR><TD CLASS="quote">u got the wrong set of ES bushings....

as i look the second pic of the inserts.... those are for 88-91 civic..... look as the sme ones i have installed.... if so they are the front and rear tranny mounts for D series..... they wont work on ur LS mounts...... go buy the 93 ls mount inserts</TD></TR></TABLE>

The box says part # 16.1109G, which I looked up on the ES website. It says they are for my 93 LS motor. Unless the inserts were sent in the wrong box
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Old Oct 10, 2003 | 03:29 AM
  #5  
1st-hybrid's Avatar
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Default Re: Can you use silicon to fill motor mounts?? I need help. (crex23)

Here you go: https://honda-tech.com/zerothread?id=445236

It's a DIY post on polyurethane mounts. Hope it helps.
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Old Oct 10, 2003 | 07:42 AM
  #6  
91civicDXdude's Avatar
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From: Saint Joseph, MO, USA
Default

wait a minute.. 3 mounts? there are 4 mounts
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Old Oct 10, 2003 | 01:20 PM
  #7  
photonjedi808's Avatar
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From: hi, US
Default Re: Can you use silicon to fill motor mounts?? I need help. (crex23)

You should return the inserts and get the right ones. Then you could use the inserts and fill it with silicon
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Old Oct 11, 2003 | 06:02 PM
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senpai's Avatar
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From: WI
Default Re: Can you use silicon to fill motor mounts?? I need help. (photonjedi808)

Well, you should know what you buy. Those are for the rear mount and both front lower torque mounts.



You got what you paid for; just not what you wanted.
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