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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 06-03-2014, 06:12 PM   #1
unsurety
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Window weld motor mounts (poor man's solid mounts)

Has anyone ever tried this?



I know, it looks ghetto. But people have done it and it's held up for years. People report it being easier, and cheaper to put in than motor mount inserts. I don't want extra NVH though, so I dunno if this is for me. But might be worth trying for less than $15.

Ideally, I would get the JDM STI mounts for the engine and tranny. But that's $700 that I'm not ready to drop quite yet.


thread I referenced:

http://honda-tech.com/showthread.php?t=672359
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Old 06-03-2014, 06:28 PM   #2
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The problem is you are looking at honda-tech.
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Old 06-03-2014, 06:45 PM   #3
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Are there any voids in the factory mounts?

Yeah, I've done it before. It will add NVH, or it did on the car I did it on. Make sure you put in a layer & let it dry, then do the next layer and let it dry. Repeat until you have the voids filled in. Otherwise the center will never dry.
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Old 06-03-2014, 06:53 PM   #4
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I did this once in a pinch when I broke a passenger side motor mount on an RSX and there was a national backorder and could not get a replacement. The motor mount dropped on the frame, and it was fluid filled but ruptured.

It worked for the week I was going to leave it on, so I drove it for another 3 years before it got stolen lol

It does work, but I wouldn't go making a motor mount from scratch when there are aftermarket alternatives available
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Old 06-03-2014, 07:45 PM   #5
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Yeah, but, new motor mounts are a LOT of money. If I can smear this stuff into my new engine mounts to stiffen things up for a few bucks, with no drawbacks, I may just try this.
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Old 06-03-2014, 07:59 PM   #6
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If my car is ever done I might try and pack the tranny mount. Just because. Not like its any cheaper then a whiteline mount though. Ive done it before on cars that didnt have aftermarket mounts.

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Old 06-03-2014, 09:27 PM   #7
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I have an STI trans mount and waiting on engine mounts before I install it all at once and I have to say......this is not nearly as dumb or "ghetto" as I had expected...

Do it. Post up results.
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Old 06-03-2014, 09:31 PM   #8
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Some people get pretty ghetto with it but honestly if you have a mount that has empty space in it and all you're doing is packing the empty space than its a viable alternative to expensive mounts for a street car

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Old 06-05-2014, 02:36 AM   #9
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Quote:
Originally Posted by Laika View Post
I have an STI trans mount and waiting on engine mounts before I install it all at once and I have to say......this is not nearly as dumb or "ghetto" as I had expected...

Do it. Post up results.
Heh, I was hoping someone else would have done it already. Or someone will try it now. When I get full exhaust and if I encounter issues, at that point I'll either invest in STI engine + tranny mounts or maybe try the window weld first.

My fear is that a solid mount will transmit too much NVH. But for someone who likes to experiment, why not? You might get what you're looking for and save hundreds in the process.
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