General: Filled Engine mounts DIY

[Misnblu]

It's been 5 years since I've posted.
I don't drive a Mazda but do drive a Toyota Paseo and like so many imports, don't have a huge aftermarket.
For those wanting poly engine mounts, this how to should help explain how to do it, do it correctly, and have some good mounts.
I've done this to my Paseo and to a Honda EG coupe, two to be exact with great results.
Since I'm unfamiliar with the Mazdas mounts, hope this information can be used for some great mounts that work as good as any aftermarket mounts you can buy for a fraction of the cost.


First, you'll need some 3-m Urethane and a dispensor to apply it to the existing mounts.


You'll also need these too to do the job right.


Make sure you have some plastic gloves and some cardboard to make the following cutouts for your mounts.


Make sure you've cleaned the mounts really good so that the urethane can adhere to the rubber that is there.

Once you make your cutouts or templates for your mounts, use some packing tape to cover one side of the templates so that the urethane does not stick to them and are more readily removed when they're cured.



Once all this is done, you're then ready to start filling the mount with the 3-m urethane.
Start by filling in one side of the mount, making sure that you fill at least half full the mount with urethane.
Finish this side you're doing but covering the mount to the lip of the mount as shown in this picture.


Slightly over fill this so that when you use a template, it pushes down some of the urethane further into the mount.
Push the template down until it sits flush with the mount and start the other side.


Once done, your mount should look like this on the opposite side.
You should be able to see the urethane about midway into the mount.
From here, fill the rest of the mount with the urethane making sure that all gaps are filled and no air is in the mount.


You mount should look like this and again, make sure that you slightly overfill the mount with urethane and that you fill it to the edge of the mount.


Again, use a template and push it down onto the mount, getting it flush with the body of the mount so that some of it oozes out to the side. You can clean up some of this mess with some plastic gloves.
Push both sides of the templates so that they are flush on both sides and don't hang off. They'll stay this way until they cure.

See second thread for the rest.
Forums only allow 10 pictures to one post.

[Misnblu]

On the next mount, do the same as before, filling the mount as much as possible, filling it to about half way to the other side.


Push on the template and flip the mount over and again, you should see this when you do.


It should be quite simple to fill the rest of the mount with urethane and not get any air into it so that it becomes solid.
Overfill slightly and add the last template while squeezing out the excess out of the sides.
Press both templates again so that they are flush with the body of the engine mount.

This is what both mounts should look like when they're done.



The completed set of mounts and should cure in about three days or so.


In about three days, peel off the templates to reveal the nice new poly mount and install onto the car.

This is really a great, cheap mod that does work.
This is my second set and for sure, is my best set yet.
I guess you could say that my first set were the prototypes and will be replaced with this set I've just done.


Here is what the mounts look like.
They're still not fully cured but when done, should be very nice and solid.
I can't wait to install these this weekend.






That's what they should look like when they're done.
The templates with the tape on them keep the urethane from sticking to the templates and give the mounts a nice finished look.

That's it.
Now get out there and do this. lol

[_Kansei_]

Excellent writeup!

I'll rename the thread and move it into the appropriate subforum.

I'd try this myself but two of my motor mounts are already 95 durometer poly and the others have 95 durometer poly inserts

[mazdaspeed777]

Cool, Thanks. I might be doing this to my side mounts and I was wondering what type of product to use to fill them with.

[jimmybrite]

Wow, I've thought about doing that to my Protegé but with silicone, man, I didnt think you could buy liquid urethane like that, awesome, better than spending a ton of cash for AWR inserts or streetunit mounts (I had the SLS mounts and, they broke 'cause yeah, they're so damn cheap, I hate myself for even buying those)

[erwin.zeez]

i find different type of post,actually i was surfing net and came here. find this post different one!Well someone who dont know about it may get interesting type of information from this post…good sharing of ideas