Quote:
Originally Posted by juanesoto
Hello guys!!
Just wondering a little bit about a 617 turbo engine. What do you think about replacing the turbo with a belt-driven supercharger? Maybe from Powerdyne or Procharger....
I mean, with the turbo, you have as a main issue the intake air temperature, because the turbo body is heated by the exhaust which ends up heating the intake air added the heat generated by the compression of the air itself. This means you need a big intercooler when you are running high pressures.
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There are a few problems with your logic.
First, Powerdyne or Procharger are the worst superchargers you can possibly choose. Centrifugal superchargers have the WORST features of turbos and superchargers. Boost lag, high intake temperatures, loud noise, and parasitic power draw from the crankshaft. If you must choose a supercharger, use a Roots blower or twin screw type.
Second, Most of the heat is from actual compression of the air, not from the heat in the turbine section. Superchargers heat the air just as much as turbos.
Finally, superchargers take actual horsepower from the crankshaft. Turbos only cause minor backpressure that translates to about 1/3 the power that a supercharger needs.
Take a look at this article:
http://www.superchevy.com/technical/engines_drivetrain/induction_poweradders/0510sc_theory/