Plotting a project...need some tips and info on some turbo aspects

[DuronClocker]

Hey guys I'm going to somewhat turbocharge my Plymouth Sundance w/ 2.5L engine. Now, I know I can go and buy a used turbo manifold and such already designed for this car (they made turbo versions), but that's too easy and I have something else...

Now, I only want something like 3-4PSI boost, just in order to test my concept out. I'm looking at a 14B right now, which I've discovered only flows a maximum of 405CFM at 15psi. My 2.5L (153ci) redlines at 6000RPM. If I did the math right, my engine breathes 530CFM at redline, and reaches 405CFM at only 4575RPM. Does this mean that my engine would actually *lose* performance by bolting a 14B onto it, even at 15psi boost? Would I be limited above 4500RPM?

Also, I need to know how fast this turbo spins to achieve 15psi. Is the boosting fairly linear? For example, if a turbo puts out 10psi at 100k RPM (turbo shaft RPM), does that mean that at 10k RPM (turbo shaft RPM), it will be putting out 1psi?

The answers to all of these questions are very important for me to know to figure out whether my concept will work. What is my concept? Maybe I'll tell you later

 

[DuronClocker]

Nevermind it appears my math is pretty far off, and I just figured it out with a new formula. A 14B would be more than enough I think.

 

[pneumo]

Mind if I take a shot at what your concept is? I'm guessing you plan to hook up the 14b compressor to a direct drive off an engine accessory belt and through some kind of gearbox to increase the rpm of the compressor wheel. In effect, you're building a Vortex supercharger.

Here's a compressor map of the 14b. www.stealth316.com/images/td05h-14b-cfm.gif The numbers on the right show RPM. Notice the map goes up to about 480 cfm at 21 psi, but only about 350 cfm at 4 psi.