Originally posted by Stazi: Originally posted by chknhwk: . Some engines respond really well to positive displacement blowers and some like centrifugal blowers.
This is a very weird statemnt. I don't think engines really respond differently to boost because of how it was made; 5psi out of a turbo is 5psi out of an S/C if they are both at the same temp and flow.
What makes the difference in either f/i device is that s/c's are more linear that t/c's and also each one can produce varying output temps.
At the end of the day, which either method produces the coolest charge will make the best power (if you assume identical intercoolers on both setups).
But with a well designed t/c system you can get max boost quicker than with an s/c which will give you ,ore tq under the curve which will make the car faster.
Stazi, there is a really nice write up about different super chargers in this months sport compact, Its part of a multipart series sport compact was doing. It talks about the different types of power that super chargers can produce depending on what type of setup they are. I am sure this can also be used to say what different turbo setups offer as well. I didn't get time to read the whole article, but it was very interesting to read some of that.
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