Is the Kenne Bell a roots-style blower, like the Eaton? Thanks.
Is KB blower a roots blower?
- Thread starter SStupid
- Start date
its a twin screw design, best of both worlds/cetri, roots/
Mike
Mike
:dw: twin screw?
From Kenne Bell's website:
What is the basic difference in operating principle between the Twin Screw, Roots type and centrifugals? All superchargers make good "peak" horsepower given the same boost level. Superchargers pump more air into the engine than it can normally use with the atmosphere's 14.7 psi boost. Hence the supercharger builds up back pressure (boost). The twin screw and Roots type are "positive displacement" superchargers and build the same boost at any rpm 2000 up. However, it is a well known fact that size for size the twin screw is much more efficient than the Roots type (lower discharge temp and less parasitic loss). The centrifugal is not a positive displacement type. It is essentially a belt, ball or gear driven turbocharger which pumps relatively little air flow at the low and mid range rpm bands. It depends solely on engine rpm to build boost. The higher the rpm, the higher the boost - typically 1 psi per 1000 rpm on a 5-6 psi kit. The delivery air volume increases as the square of the rotational speed of the impeller. Nothing (advertising, opinions, or spin Doctors etc.) can change these basic physical operating principles.
Here's another good article explaining roots vs. twin screw:
Roots vs Twin Screw
Happy reading!
What is the basic difference in operating principle between the Twin Screw, Roots type and centrifugals? All superchargers make good "peak" horsepower given the same boost level. Superchargers pump more air into the engine than it can normally use with the atmosphere's 14.7 psi boost. Hence the supercharger builds up back pressure (boost). The twin screw and Roots type are "positive displacement" superchargers and build the same boost at any rpm 2000 up. However, it is a well known fact that size for size the twin screw is much more efficient than the Roots type (lower discharge temp and less parasitic loss). The centrifugal is not a positive displacement type. It is essentially a belt, ball or gear driven turbocharger which pumps relatively little air flow at the low and mid range rpm bands. It depends solely on engine rpm to build boost. The higher the rpm, the higher the boost - typically 1 psi per 1000 rpm on a 5-6 psi kit. The delivery air volume increases as the square of the rotational speed of the impeller. Nothing (advertising, opinions, or spin Doctors etc.) can change these basic physical operating principles.
Here's another good article explaining roots vs. twin screw:
Roots vs Twin Screw
Happy reading!
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