I've been wondering for a long time what kind of structure those hydraulic 360 engine mounts have, because engine is hanging on them, not sitting on them, so I cut one open.

It was quite an easy task, even though I only got a hacksaw and a 20euro Dremel knock-off.

Starting the cutting.

http://koti.mbnet.fi/mtn/images/autot/v ... G_2792.JPG

My trusty dremel knock-off

http://koti.mbnet.fi/mtn/images/autot/v ... G_2793.JPG

Shell is beginning to open but the top gave me some trouble..

http://koti.mbnet.fi/mtn/images/autot/v ... G_2794.JPG

So let's cut the top off.

http://koti.mbnet.fi/mtn/images/autot/v ... G_2795.JPG

What shall we find inside..

http://koti.mbnet.fi/mtn/images/autot/v ... G_2797.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2798.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2800.JPG

Shell is off

http://koti.mbnet.fi/mtn/images/autot/v ... G_2801.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2802.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2803.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2804.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2805.JPG (some kind of ball valve)
http://koti.mbnet.fi/mtn/images/autot/v ... G_2807.JPG

ok so far it just looks like a rubber mount inside a steel casing.. but it's something else. It comes apart. (And some fluids came out at the same time which literally smelled like s*it.. )

http://koti.mbnet.fi/mtn/images/autot/v ... G_2808.JPG

So the another end comes off and a rubber seal is revealed.

Let's remove the rubber seal, it's made of a soft rubber.

http://koti.mbnet.fi/mtn/images/autot/v ... G_2809.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2810.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2811.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2812.JPG

That looks weird.. Let's remove a thingy with holes in it.

http://koti.mbnet.fi/mtn/images/autot/v ... G_2813.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2815.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2816.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2818.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2819.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2820.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2821.JPG

What does that thing do? First I thought it has some kind of filter on it but the stuff between the discs, which can be seen through the holes, it's more like rubber than filter, though I haven't taken it out so not 100% sure.. though it didn't let any water or white spirit through when I cleaned it. Maybe a some kind of valve? That channel which goes inside the disc comes out at the other side and fluid can pass through it freely.

Here's the big rubber part of the mount

http://koti.mbnet.fi/mtn/images/autot/v ... G_2822.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2823.JPG (ball valve can be seen here, could it be refilled through the valve and what was that fluid which smelled like s*it? )
http://koti.mbnet.fi/mtn/images/autot/v ... G_2824.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2825.JPG
http://koti.mbnet.fi/mtn/images/autot/v ... G_2826.JPG

All bits and bobs

http://koti.mbnet.fi/mtn/images/autot/v ... G_2828.JPG


So I've not yet figured out how does it actually work, is it a some kind of shock absorber or how the fluids work in the two chabers and what doest that disc type thingy in the mount exactly do? Any ideas?

I'm just trying to figure out what would be a best way to renovate old mounts. This might be also usefull info if someone is manufacturing own mounts, it helps to know how the original mounts work.. Maybe a solid polyurethane mount in a steel casing would work? That would prevent the engine falling on the road if the mount fails. Classicswede any ideas?

Wow !! What a job man !!!

Thanks a lot for the info !!!

I never would have guessed there was so much inside what looks like a piece of solid rubber.