Originally posted by Rara:
ok, I finally have a minute to think about how to explain this. Here goes.
cfm of a turbo is not related to the engine flow. it is dependent on the turbo itself.
You know what, I just completely re-read your post, and you are close, but quite mixed up. It would take more time than I have now to cover it all. I guess I will have to come back to this.ok my re-wording is necessary, lol. i shoulda said "CFM
flow of the turbo..."
the turbocharger *obviously* can only push so much air. reading any compessor map will tell you that. hence the reason there are so many different types/combinations/modificatons of compressor wheels.
a turbocharger has its range of efficiency that it must operate in in order to produce positive power. i made it sound all ****ed up with the "not related" issue. so lemme rephrase.
the turbocharger itself will not push more air just because an engine is larger. a larger engine will help bring a turbo to its range of efficency quicker, and past. a larger, efficient engine will produce more exhaust flow *obviously* and this will change the characteristics of the turbochargers power-making ability.
The T-3 that i use will be much too small for a larger 5.0L engine. supposing that both engines have a similar intake/exhaust cfm to displacement ratio, the T-3 will not be up to the task of powering the 5.0L like it will power the 2.3L.
heres a quick analogy: blow thru a coffee straw and try to fill up a beachball. now, blow as hard as you can. your head aches, your cheeks hurt, your lungs strain. and that damn beachball isnt very full! now, pick up a paper towel roll. blow thru it. your lungs are not taxed hardly at all, and for the most part you couldn't wear yourself out blowing thru it. also, that beachball is filling up nicely. a turbocharger works like this. the same size turbo will not power something that requires a larger compressor.
did i clear up anything i said???
