kb foxes....?
5th Gear Member
Joined: Jul 2003
Posts: 3,451
From: United States
RE: kb foxes....?
ORIGINAL: mnile9127
The only power adder that is more efficient than a twin screw on high end
is a TURBOCHARGER! I will change my statement and say:
The Best Supercharger is a Twin Screw, but the Best Power Adder
is a Turbo.
The only power adder that is more efficient than a twin screw on high end
is a TURBOCHARGER! I will change my statement and say:
The Best Supercharger is a Twin Screw, but the Best Power Adder
is a Turbo.
As far as high end efficiency.
N20>Electric supercharger>Turbocharger>Centrifugal supercharger>Twin-Screw> Roots
http://en.wikipedia.org/wiki/Centrif...e_supercharger
"Like any centrifugal pump, the boost provided by the centrifugal supercharger increases with the square of the speed, measured in RPM. This means that the centrifugal design provides little boost at low engine speeds, in some cases allowing air to pass back through the supercharger. On the other hand, the design is also the most efficient, besting designs like that Roots type supercharger and twin-screw type supercharger, which have the advantage of producing boost at any RPM."
http://auto.howstuffworks.com/supercharger1.htm
"Centrifugal superchargers are the most efficient and the most common of all forced induction systems."
http://www.info20.com/superchargers/superchargers.htm
"Unlike the two options the third option is the most efficient type of supercharger, the Centrifugal"
http://www.superchargersonline.com/content.asp?ID=76
There are two very good quotes in this one...
"Because the compression is done inside the (twin screw) supercharger, this design produces less heat than a roots supercharger - in fact, it is almost as thermally efficient as a centrifugal design. Like the roots design, the twin-screw is a fixed displacement supercharger (meaning that it pumps a fixed volume of air per revolution), and because the tolerances between the rotating screws are very tight, its ability to create boost at low rpms is unparalleled."
"Second, the centrifugal supercharger produces very little heat because of its internal compression ratio. It is also small in size and very versatile because it can "free-wheel" and allow the engine to suck air through it or even flow air backwards. For this reason it can be placed anywhere in the intake tract - it can even "blow through" the throttle body, meaning it can be mounted nearly anywhere. It is also the most thermally efficient supercharger, meaning that it produces the lowest discharge temperature."
2nd Gear Member
Joined: Nov 2005
Posts: 323
From: Chicago, Illinois USA
RE: kb foxes....?
I dont get this info/opinion from books or articles. I get my info/opinion
from first hand experience. Unlike most people I have driven all types
Nitrous, Centros, Roots, Twin Screw, and Turbo Stangs.
Based on this I say Turbos are the only power adder that
will out do a Twin Screw. I would like for you to run against
a twin screw with the same amount of boost as you. Or drive one.
READING IS FUNDAMENTAL, BUT EXPERIENCE IS THE BEST TEACHER
from first hand experience. Unlike most people I have driven all types
Nitrous, Centros, Roots, Twin Screw, and Turbo Stangs.
Based on this I say Turbos are the only power adder that
will out do a Twin Screw. I would like for you to run against
a twin screw with the same amount of boost as you. Or drive one.
READING IS FUNDAMENTAL, BUT EXPERIENCE IS THE BEST TEACHER
4th Gear Member
Joined: May 2006
Posts: 1,677
From: Scottsdale, AZ
RE: kb foxes....?
ORIGINAL: FoxGT
Where did you get that information? I don't know of one article claiming it to be the most efficient on high end over the centrifugal. I'm not sure where you've got your info, but you've been misinformed. Twin screws are good at producing boost IN ALL RPM, thats what makes people love them so much, but they are NOT the most efficient in high rpm. Here though, check these out.
As far as high end efficiency.
N20>Electric supercharger>Turbocharger>Centrifugal supercharger>Twin-Screw> Roots
http://en.wikipedia.org/wiki/Centrif...e_supercharger
"Like any centrifugal pump, the boost provided by the centrifugal supercharger increases with the square of the speed, measured in RPM. This means that the centrifugal design provides little boost at low engine speeds, in some cases allowing air to pass back through the supercharger. On the other hand, the design is also the most efficient, besting designs like that Roots type supercharger and twin-screw type supercharger, which have the advantage of producing boost at any RPM."
http://auto.howstuffworks.com/supercharger1.htm
"Centrifugal superchargers are the most efficient and the most common of all forced induction systems."
http://www.info20.com/superchargers/superchargers.htm
"Unlike the two options the third option is the most efficient type of supercharger, the Centrifugal"
http://www.superchargersonline.com/content.asp?ID=76
There are two very good quotes in this one...
"Because the compression is done inside the (twin screw) supercharger, this design produces less heat than a roots supercharger - in fact, it is almost as thermally efficient as a centrifugal design. Like the roots design, the twin-screw is a fixed displacement supercharger (meaning that it pumps a fixed volume of air per revolution), and because the tolerances between the rotating screws are very tight, its ability to create boost at low rpms is unparalleled."
"Second, the centrifugal supercharger produces very little heat because of its internal compression ratio. It is also small in size and very versatile because it can "free-wheel" and allow the engine to suck air through it or even flow air backwards. For this reason it can be placed anywhere in the intake tract - it can even "blow through" the throttle body, meaning it can be mounted nearly anywhere. It is also the most thermally efficient supercharger, meaning that it produces the lowest discharge temperature."
ORIGINAL: mnile9127
The only power adder that is more efficient than a twin screw on high end
is a TURBOCHARGER! I will change my statement and say:
The Best Supercharger is a Twin Screw, but the Best Power Adder
is a Turbo.
The only power adder that is more efficient than a twin screw on high end
is a TURBOCHARGER! I will change my statement and say:
The Best Supercharger is a Twin Screw, but the Best Power Adder
is a Turbo.
As far as high end efficiency.
N20>Electric supercharger>Turbocharger>Centrifugal supercharger>Twin-Screw> Roots
http://en.wikipedia.org/wiki/Centrif...e_supercharger
"Like any centrifugal pump, the boost provided by the centrifugal supercharger increases with the square of the speed, measured in RPM. This means that the centrifugal design provides little boost at low engine speeds, in some cases allowing air to pass back through the supercharger. On the other hand, the design is also the most efficient, besting designs like that Roots type supercharger and twin-screw type supercharger, which have the advantage of producing boost at any RPM."
http://auto.howstuffworks.com/supercharger1.htm
"Centrifugal superchargers are the most efficient and the most common of all forced induction systems."
http://www.info20.com/superchargers/superchargers.htm
"Unlike the two options the third option is the most efficient type of supercharger, the Centrifugal"
http://www.superchargersonline.com/content.asp?ID=76
There are two very good quotes in this one...
"Because the compression is done inside the (twin screw) supercharger, this design produces less heat than a roots supercharger - in fact, it is almost as thermally efficient as a centrifugal design. Like the roots design, the twin-screw is a fixed displacement supercharger (meaning that it pumps a fixed volume of air per revolution), and because the tolerances between the rotating screws are very tight, its ability to create boost at low rpms is unparalleled."
"Second, the centrifugal supercharger produces very little heat because of its internal compression ratio. It is also small in size and very versatile because it can "free-wheel" and allow the engine to suck air through it or even flow air backwards. For this reason it can be placed anywhere in the intake tract - it can even "blow through" the throttle body, meaning it can be mounted nearly anywhere. It is also the most thermally efficient supercharger, meaning that it produces the lowest discharge temperature."
2nd Gear Member
Joined: Nov 2005
Posts: 323
From: Chicago, Illinois USA
RE: kb foxes....?
You guys (sskiller+foxgt) are KB player haters.
Original Thread is KB foxes. Neither of you have KBs. And it
doesnt seem like you're interested in one. So, you come on this thread
to down them. Sounds like someones JEALOUS!!!!
Original Thread is KB foxes. Neither of you have KBs. And it
doesnt seem like you're interested in one. So, you come on this thread
to down them. Sounds like someones JEALOUS!!!!
5th Gear Member
Joined: Jul 2003
Posts: 3,451
From: United States
RE: kb foxes....?
ORIGINAL: mnile9127
I dont get this info/opinion from books or articles. I get my info/opinion
from first hand experience. Unlike most people I have driven all types
Nitrous, Centros, Roots, Twin Screw, and Turbo Stangs.
Based on this I say Turbos are the only power adder that
will out do a Twin Screw. I would like for you to run against
a twin screw with the same amount of boost as you. Or drive one.
READING IS FUNDAMENTAL, BUT EXPERIENCE IS THE BEST TEACHER
I dont get this info/opinion from books or articles. I get my info/opinion
from first hand experience. Unlike most people I have driven all types
Nitrous, Centros, Roots, Twin Screw, and Turbo Stangs.
Based on this I say Turbos are the only power adder that
will out do a Twin Screw. I would like for you to run against
a twin screw with the same amount of boost as you. Or drive one.
READING IS FUNDAMENTAL, BUT EXPERIENCE IS THE BEST TEACHER
So I'll take the information from people that research about the things & can afford to do all 4 to one. & I GUARANTEE the 4 cars you drove did not have the EXACT same things done to the engine, the EXACT same psi, the EXACT same intercooler (if equipped). Saying you've driven all of them doesn't mean they all had the same things done to them. If that were the case I could put a kb on a stock mustang drive it, then get a lighter mustang, put heads, intake, exhaust, cam, & a ported roots supercharger. Then say, "well i've driven both & the roots supercharged one makes the kb one look like a geo.
ORIGINAL: mnile9127
You guys (sskiller+foxgt) are KB player haters.
Original Thread is KB foxes. Neither of you have KBs. And it
doesnt seem like you're interested in one. So, you come on this thread
to down them. Sounds like someones JEALOUS!!!!
You guys (sskiller+foxgt) are KB player haters.
Original Thread is KB foxes. Neither of you have KBs. And it
doesnt seem like you're interested in one. So, you come on this thread
to down them. Sounds like someones JEALOUS!!!!
2nd Gear Member
Joined: Nov 2005
Posts: 323
From: Chicago, Illinois USA
RE: kb foxes....?
ORIGINAL: mnile9127
The only power adder that is more efficient than a twin screw on high end
is a TURBOCHARGER! I will change my statement and say:
The Best Supercharger is a Twin Screw, but the Best Power Adder
is a Turbo.
The only power adder that is more efficient than a twin screw on high end
is a TURBOCHARGER! I will change my statement and say:
The Best Supercharger is a Twin Screw, but the Best Power Adder
is a Turbo.
those tires grab at 2000 rpm in 3rd gear at full rated boost? I'll would tell you
but you will probably want to see some article clips, statistics, specs, or
some other BS. I was fortunate to be able to drive my friends cars.
No, they weren't same, but the there wasn't that much difference.
Example:
1995 GT KB Mild cam 8psi street/12 psi strip
1996 GT Procharger Intercooled 14psi street/20 psi strip
1992 Notch 408 250 shot
2003 Cobra Eaton 75 shot
1987 Grand National Turbo 23 psi
1992 LX 306 Turbo 10 psi
There are more of my friends cars, that I have driven.
I'm only comparing the power adder, I would prefer everyone of those
cars have the turbo, but if not twin screw all the way.