Originally posted by "Someone"
Originally posted by Fordman
Lets straighten this out a little. Most of you are pretty much correct. I did a lot of research on both types of blowers for my car and here is what I found out:
Roots blowers are good for low end torque and have better throttle response (hits quicker) given they are right on top of the motor unlike a centrificual blower. They (roots blowers) can make good h.p. but to do this you have to make a lot more boost. This is where the problem comes in with roots blowers. There biggest draw-back is heat. The screws in the roots blowers generate a lot of heat and the faster you turn them the more heat they make so therefore they are not as effecient as the centrificual blowers and the heat ends up costing you H.P. not to mention more wear on the motor.
Both are belt driven. The roots blowers are much cheaper and very easy to install.
Roots blowers are more commonly used on production cars because they take less engineering to get them to fit under the hood and are better for everyday driving (more torque).
The centrificual blowers are the way to go if you have the room under the hood. They have far more potential for street use. If you had a all out drag car the roots blowers will kill the centificual in many aspects this is why all the top fuel alcohol and pro mod teams use roots blowers.
Hope that helped.
Outstanding..lol..you said what I did with more words
