Quote:
Originally Posted by chevota84
A lot of that is over my head, however, wouldn't the 1:1 ratio lead you to believe that the forces are close to balanced? If the turbine housing is too tight or the wheel is too small, you'll see a much higher drive pressure number vs boost, the same if there's an intake restriction. When it gets a higher than 1:1 ratio you're seeing an inefficiency on one side or the other of the turbo, it's taking way more power than its producing.
Sent from my SM-G965U using Tapatalk
|
It would appear that way on the surface but as kyle was getting at it is an arbitrary number when comparing a given turbine and compressor. Two entirely different designs. Different blade count, architecture, conditions (temperature), etc. More times than not bearings aren't the issue. It is overspeed and/or lack of oil supply. That doesn't necessarily mean the engine isn't keeping up so much as orifices and internal metering isn't supplying enough.