What is the name/manufacture of the sin bearing?

[Nine8Six]

Originally Posted by Jager

There are a couple methods of detecting failing bearing assemblies that were developed as preventative maintenance practice for factory and shop machines. I am anxious to learn what epapp has to offer the automotive world so I can go buy that 997 I’ve been keeping an eye on!

Detecting rolling element bearing faults with vibration analysis

Using accelerometers or using a broadband pickup and heterodyning for our ears to hear are interesting thoughts but I think would be a challenge on internal combustible engines (with all the other noises and moving parts) but if one could be installed on the IMS bearing cover it might work… OK, I’m off to the lab to develop.

Works on machinery that are heavy, grounded and has a constant rpm. Performing vibration's wave spectrum "analysis" in a dynamic environment (fluctuating rpm being one alone) requires heavily formulated algorithm. Not to mention that the system would need to go through a serious adaptation/learning cycle each time it is boot-up. Your Porsche would cost $150,000 (min) more if it had a such smart system attached to it.

Still cheaper to buy a second hand engine imo

[Jake Raby]

We utilized vibration analysis to try and create trend data for pinpointing failing bearings in 2007-2008. It was worthless! After putting equipment in the hands of dealers seeing 50+ M96 powered cars per week we could not gather any information that was reliable. Dual mass flywheels are enough by themselves to create variances in harmonics.

It was difficult enough to use this type of equipment when testing aircraft (Helicopters) utilizing iterations per second measurement values. Half the time we were better off setting up blade trim the old fashioned way with trim tabs, targets on the blades and hanging ourselves out the crew door with a strobe light to measure the blade paths to set track and balance.

[Nine8Six]

Originally Posted by Jake Raby

.... old fashioned way ........ hanging ourselves out the crew door with a strobe light to measure the blade paths to set track and balance.

and that, is what distinguish a true blood engineer from the other ones that otherwise are only good at reading English (e.g. technology datasheets).

Bare bone physics, simplicity and common sense always win

epapp needs to reinvent the bearing

[Nine8Six]

epapp if one day you fancy being taken seriously; the hint is "controlled magnetic levitation". You'd sell so many IMS Retrofit kit believe me

Or rotational stabilization magnetic levitation, not sure forgot....