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Old 04-19-2016, 10:17 AM
NikolaiD's Avatar
NikolaiD NikolaiD is offline
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Default Engine Masters Centrifugal vs. Roots Superchargers

Another good episode.
Comparing a roots blower with a centrifugal (Paxton 1200, which is the same as the Vortech V-3 we use).

Interesting to see a 125lb-ft difference at 3000 rpm, but when I eventually try for boost again, I'm going centrifugal. That much torque down low just makes the car harder to handle..

https://www.youtube.com/watch?v=EHg2uqJvLOk
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Old 04-19-2016, 03:36 PM
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Cooling with a centrifugal is easier than a roots.
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Old 04-20-2016, 12:35 PM
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Quote:
Originally Posted by bmwMcrzy View Post
Cooling with a centrifugal is easier than a roots.
Typically, yes. Especially with a V-shaped engine. The more boost you try to put in, the bigger aftercooler you need and it makes the intake manifold super tall and hard to fit unless you make it stick out of the hood. Most twin screw set ups seem to sit right around Ruslan's comfort zone around 5 psi.

With centrifugal you can use an intercooler, but you have a lot more piping, which is difficult to route and you have more possible boost leak locations.
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