blown 87

The dump I guess.

SeanR

What is the failure point? The same as the Pmounts?

ALKada

Any motor mount can fail and will eventually fail. The question is, the quality behind these motor mounts. As Sean stated, the mounts are actually heavier build than the spec Porsche or sub Ford mounts. The quality of the mounts are from Volvo and the person backing these products and making the situation right if they were to prematurly fail is Roger. Both I am comfortable with as much as I would be comfortable with a solid Ford or Porsche part.

blown 87

Depends on which of the many Volvo mounts we are talking about.
The solids just break, the filled collapse, I have replaced literally hundreds of them.

And guys I am not saying that these are not good mounts, just that I have no idea of which ones we are talking about.
I do know that Roger will stand behind them, just like any of the other of the Parts folks who post here.

blown 87

And no one else near you car has any doubt if it is running or not, it is the best sounding 928 I have ever heard.

docmirror

That sounds like good money right there.

blown 87

I am easy, but I have never been called cheap, so yes, good money.

The older ones were especially bad about mounts, they were made to break in case of a accident so the engine would go under the car and allow the front to crumple, or that is what I have been told.

SAAB's are about as hard on mounts.

danglerb

Wasn't reliability of the Porsche part an issue as well as the price?

Something like as little as 3 to 5 years with a Porsche factory replacement on some car?

My guess is that a MM life is related to three main factors, heat cycles, amount of vibration, and the basic quality and construction of the MM. A smooth running motor, in a cool climate, never driven hard would have a much longer life than a rough running motor, in a hot climate, driven hard. Lots of YMMV to consider.

*********************

Roger has been really good at finding quality replacement parts at reasonable prices, so I hope curiosity over the model of Volvo isn't being driven by plans to take his information and then buy it wherever its a few bucks cheaper. OTOH I would like to be able to openly discuss the new part, and that doesn't go far until its clear which part we are talking about.

Z

There were some new genuine Porsche mounts that failed in less than a year. There was some talk about there maybe having been "a bad batch", but I never really heard anything definite on that either way. Seemed kind of similar to the replacement heater valves that are being discussed. The originals lasted a long time, but the new replacements didn't. I know I've seen other genuine Porsche replacement parts that didn't appear to be of the same quality as the original ones that came on the cars.

It wasn't what we intended to do when we started out, but Tim Murphy and I recently spent most of a whole day driving around from auto parts store to auto parts store looking at, shaking, and weighing engine mounts. That was a pretty educational day. To say that there are some consistency and quality control issues in the engine mount world would be a huge understatement. Of all of the ones that we saw, there was only one that was what it was supposed to be, and what we were looking for. We did come across two that were supposed to be hydraulic ones that were hollow, and didn't have any fluid in them.

Shark_Week

dan glerb
my curiosity certainly isn't driven by going somewher else to save $22. i worked on volvos for many years and like greg have replaced plenty of mounts. if they failed/wore out supporting 4 cylinder engines how will they do with the V8? that's all. just discussion

docmirror

I would like to order 500 Porsche motor mounts at $68.50 please.

ROG100

This is what I am saying to everyone I speak to regarding MM's.
These are after market MM's and as such are not made or intended for the purpose to which a 928 owner may or may not use them. There is an element of risk when using this type of after market part.
You pays your money you takes your choice.
As long as the user understands this then I will be happy to sell them the parts. This was and has been the exact same situation with the Ford MM's when they were introduced to the 928 users many years ago.
The Volvo MM's have been used succesfully by the UK group for a number of years and this gives me some postive feedback they are fit for purpose.
Nobody is forcing anyone to use these MM's and if you have the slightest hestiation then please do not use them.
Time will tell and we will document the progress.

hans14914

Rog,

What is the current pricing on factory mounts. Been a while since I looked. I am due for replacements - I was in the initial batch of people who tested the Ford mounts, and went hydraulic because at the time, it was unknown they would have "long term" issues. I think i got a pretty good run out of them, but time to swap out to something else.

As far as jobs go, I never thought MM was that bad (with a lift), so will probably opt for the budget route again. Its a good opportunity to check on steering issues and other under-chassis items.

Thanks
Hans

ptuomov

The two-liter four in Saab 99 does rock, literally!

ROG100

Cross section of MM's for those that are interested

Porsche on the right and Volvo on the left
If the pictures are in a different position the green background is the Porsche MM.
For those that are color blind ---- forget it 8>)