Aftermarket 2005+ Mustangs Discuss the Offerings from Roush, Saleen, Steeda, Shinoda, and Others

Twin screw or not?

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Old 6/4/05, 11:39 AM
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Is the Eaton blower they are referring to ( R122) a twin screw or not? :scratch:
Old 6/4/05, 11:57 AM
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Its not a twin screw its a roots type.
Old 6/6/05, 02:09 PM
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I don't believe that Eaton makes a twin screw at all.... they pioneered the roots type and are evidently convinced that it's a good thing.... when it is in fact the least efficient type of blower.

they are doo doo if want my opinion.
Old 6/6/05, 02:11 PM
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there fine if you dont run high boost i prefer twin screw myself though
Old 6/6/05, 02:15 PM
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Ok...this might sound like a stupid noob question, but what is the difference between a twin-screw and a roots-type blower? I know the difference between a roots blower (like the Eaton) and a centrifugal blower (like Vortech, ATI, Paxton, etc) and know how they work, but I don't know much about a twin-screw. Please educate me on my supercharger ignorance.
Old 6/6/05, 03:51 PM
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Originally posted by 03muzzy6@June 6, 2005, 3:18 PM
Ok...this might sound like a stupid noob question, but what is the difference between a twin-screw and a roots-type blower? I know the difference between a roots blower (like the Eaton) and a centrifugal blower (like Vortech, ATI, Paxton, etc) and know how they work, but I don't know much about a twin-screw. Please educate me on my supercharger ignorance.
A roots type blower injects air it has NOT compressed. A twin-screw supercharger injects air it has ALREADY compressed.
Old 6/6/05, 03:53 PM
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This explains the way the three types work and their advantages/disadvantages pretty well.

http://www.superchargersonline.com/content.asp?ID=76
Old 6/6/05, 06:09 PM
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Thanx for the info guys.
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