Hmm, I'm 'spectacularly wrong' but still no details.

Forgive me for trying to help the uninformed reader understand how diesels work since most people I talk to have no idea about how diesels really differ from gas engines.

For the point of clarity I will correct a few of the statements I made where I loosely used the terms temperature and volume where I should have more accurately used the terms heat and mass. When trying to describe the BASICS of how each works I am also referring to normally asperated motors.

A NA diesel flows a certain mass of air for a certain RPM and the heat energy applied to those gasses (from the combustion of injected fuel) is changed based on the needed power output.

In a NA gas engine the heat per mass of air the engine processes is relatively fixed, but the amount of air the engine is fed is varied to control power.

Since turbine and compressor maps are combined and optimised based on things like volume, pressure and temperature all these facts combine to make most diesel turbos specialized to their application.

For example the turbo on a 6.5 diesel that red lines around 3,500 RPMs is pretty similar in size to the K27 on my 3.3. Which do you think is better suited for a 3 liter gas engine?

Perpahs a turbo from a Mitsu Fuso 4 liter diesel would be great for turbo honda project?

Thats the reason why I stated that I would not be suprised to learn that there are some diesel turbos that might be suitable for a gasoline engine.