Lower engine mount...once more.
 

Just finished this:

http://i244.photobucket.com/albums/g...nemount-PU.jpg


If I'll have time tomorrow it will go there:

http://i244.photobucket.com/albums/g...agedrubber.jpg


I have an entire theory about that shape, let's see if practice confirms it.
The material is a tough polyurethane, I use it to make these and it works great in off road:

http://i244.photobucket.com/albums/g...Gkit-small.jpg

looks very good have you thought about producing a few of these and selling them ?

This would need a minor design modification, a snap-in profile for being easily installed. I have an alternative to this, I can use a primer and polyurethane to glue it to the aluminium alloy, but it is processed hot and heat treated for 16 hours after, at constant temperature; this is not an easy do for an ordinary car shop.
(RTV PU is not tough enough for this kind of job.)
I will think about the possibilities. Thanks.

wow that's impressive. Maybe people can donate their broken ones to you, might as well as they would normally go in the bin.

Like the look of that Fidel.
You have done away with the two stress points and replaced them with multiple points.
If it works well, you could be in business rebuilding old ones.
Best of luck.

Mick

Would be very interested in poly-bushing my existing mount, but the problem is i'd need to do a straight swap. Have you considered (like everyone mentioned) an exchange service?


What sort of cost for the bush?

Great work Fidel
I'm sure you'll have a large market for those!

But there is also a large market for the standard rubber bush but maybe modifying it slightly with smaller stress holes to give it longer life whilst maintaining engine noise insulation.

The problem for the DIYer though is removing the old bush.
Believe me you will run into problems with an exchange service.....................
People don't return the old ones!!

I tried it with Cooling Fan cowlings...............
Even with a hefty surcharge people still didn't return the old ones.........
So be warned you will always end up short of exchange units.

Regards
Jules

The fitting and the usage of this would be interesting.... Due to the tough polyurethane material (as opposed to the rubber), would engine vibration be increased into the passenger compartment? :shrug:

Playing a Devil's advocate here....:( ;);)

Agreed. I poly bush all my track cars, and on anything but a glass smooth track, it'll have your fillings out!

Great idea though, building in multiple stress points over the weedy Rover effort of two.

Redesigned engine lower mount
 

Future will tell. For the moment I can only say that due to the shape and the size of the six links it behaves softer than the old one, at least this is what I can feel by hand; it will be installed on a M47R in the very next days and then we will have a confirmation.
In the matter of fact it was designed following three principles:
1. Softer than the original (the vibration dampener as it is, not the PU material which is harder) to minimise vibrations on idle.
2. Shorter travel to improve the behaviour on hard acceleration.
3. A shape that makes it unbreakable. This material can be stretched to almost 500% its original length without breaking; and this can never happen, there is no room for it, even if pressed to the limit on one side.