I've noticed most of plp saying T3, T3. But if i was not wrong, the different between T3 and T2 is the flange only right?

for example, i've seen a guy asking of a turbo choice for his 1.8l motor, looking for 200whp. thn mostly plp will said dun get anything smaller thn T3. But i was wondering, wasn't the AR. housing that should be the one we should refer to? Or the amount of cfm /lbs the particular turbo can flow? If i were to have T25 with .64/.80, it should bigger thn T3 .48/.60 right?

with typical T25/T28 able to producing 340cfm, it should be able for 1.8l motor to reach 200whp goal

pls correct me if im wrong.

 

If idiot is smart thn idiot wun be asking and being called idiot right?

that is what im trying to get it clear. Are we supposed to go by cfm instead of saying T3 only? That is another point im trying to understand that if i have T3 higher A/R numbers and T4 with lower A/R numbers, boosting at the same psi, thn T3 should flow more right?

 

Kike, he just told you that A/R is just a RATIO. As in, one number divided by another. Area of scroll (A) divided by radius measured from center of wheel to center of scroll (R). If the area/radius is 50in^3/50in, that's a huge ------- turbo, but it has the same A/R as a turbo with a 1cm^3/1cm A/R (making sizes up here).

A/R has more to do with response. You have to start off by choosing a turbocharger that's suited to your engine and your goals, then look into varying A/R choices to fine tune the selection.

 

read it pls..

https://www.homemadeturbo.com/forum/...p?topic=3921.0