[kuehl]

x3m944,
Sounds like you have an interesting idea, however

"MTBF Data, yes I have it - for the anyone that doesn't understand what that is : Mean Time Between Failure (MTBF).

To be honest I have to force it to fail. I ran one unit at 80k (it was rated for 60k) for 27 hours before it failed, bearing failure. I replaced the bearings and ressumed operation. No shaft damage, no compressor wheel issues. I did stop as soon as it began to seize, I did not run it till it imploded. Guess how much boost I was making at that level, hahaha.

I don't feel that you are approaching the reliability issue on the right road. First you need to know what are the annual hours the owner puts on the engine. Then you have to run it for a given multiple, say xxx hours (x) x years (typically the warranty period if you offer one). Then run the unit at it's rated 60k until it fails. From there you have to determine what the mode of failure was and if you are going to take a selection of units, say 10 units or 100 units, and run them for the same time period and correlate your data.

Also, the test should be "real life", meaning time, temperature, altititude and humidity. Obvious this gets to be costly however I think the temperature is most critical (running the unit at "under the hood" temperature).

One other thought. You seem to me attempting to market a hybrid "unit only" and offering options.... That is a tuff-nut for the average user here on the forum. I think you will probably want to dream up a "turn-key" kit that has everything for a complete-bolt-on-solution. Just a thought.