Got a question for everyone. I have always been a person who believes in displacement and pistons. So when i started learning about rx-7s and turbos i didn't know anything...

What are turbo sizes measured in? i mean everyone keeps on saying T04, T66, etc. what do they represent and what is this in relation to the stock TII series 5 turbo? what is that considered to be?

finally if i were looking at a turbo that is just slightly bigger then the stock what would it be? T04?

 

you should check out the "Single Turbo" section of the forum...they have lots of info on turbo sized there...maybe it can answer a few questions...