T3 .60

[Jet-Lee]

Please just answer the question and don't ask any, as you will not recieve answers, yet.

How fast (RPM's) would one have to spin to produce ~350cfm?

If it depends on housing (I'm sure it does), what's the cheapest, most widely available, housing and what would the RPM number be for it?

Thanks guys!

*EDIT* - NO, I am NOT making an electric turbo/super charger.

[J-Ri]

It would depend on many variables. The angle of the fan blades, surface area of the fan blades, turbulance from the shape of the blades, etc. We would also need to know how many PSI boost you need. Several hundred RPM could produce 350 cfm, but with little pressure.

[nissanfanatic]

http://turbocalculator.com/compressor-maps/t3-60.jpg

I'm assuming the .60 is 60trim?

Engine consumption should be taken into consideration as that is how the turbocharger flow should be sized. An engine consumes a certian amount of air at a certian boost pressure. As you can see, the turbocharger can flow many different amounts at the same speed. It can flow many different amounts at the same boost pressure. And it can flow the same amount of air at different boost pressures. Get what I'm saying?

Don't buy turbos from here as they are the cheapy chinese Turbo ZY or whatever turbos. One of these recent threads has a link I posted in it showing why.

[Jet-Lee]

It'll go on a 4-banger that flows ~247cfm @ 7k rpm. (2.0L, my Escort)

*EDIT* - Yes, .60 is 60 trim.

[nissanfanatic]

Is that 247cfm with boost factored in? And how much? Just line up your PR with the amount of air you will flow at that pressure and you'll see what efficiency rating you're at and what speed.

[Jet-Lee]

That's 247cfm N/A, I dunno if it helps.
I'll be completely honest, this compressor map looks like egyptian to me.

[nissanfanatic]

You would pretty much use formulas to determine what the engine would flow say ambient pressure was raised whatever amount of boost you're running. Like if you ran 7psi, assume the atmospheric pressure is 21.7psi. I have a write up in the 240sx forums. Its in the FAQ suggestion guide. Or just search for Turbo Sizing article by Me.

Pressure ratio is boost+atmospheric pressure divided by atmospheric pressure.

Airflow is how much air the engine is going to flow according to those formulas.

Then just line up the numbers on the graph and plot your point. YOu can do this for any RPM to determine how broad the powerband will be too. Saabjohan will probably have much more useful info to contribute and a couple corrections to make.