Kraftwerks Supercharger Unit - K20A.org .:. The K Series Source . Honda / Acura K20a k24a Engine Forum
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Old 09-11-2019, 03:06 PM   #1
Otown03
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Default Kraftwerks Supercharger Unit

Want to make 450hp on an K20a dc5 motor should I use a C30 or C38 blower. Running E85 gas.
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Old 09-12-2019, 06:29 AM   #2
lewis.dickinson
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Default Re: Kraftwerks Supercharger Unit

C38.

C30 will max at about 435bhp
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Old 09-12-2019, 12:04 PM   #3
Otown03
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Thank you I guess C38 it is.
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Old 09-12-2019, 12:05 PM   #4
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Going to be using a 100mm blower pulley. 8300 rpm redline. Does this seem ok.
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Old 09-13-2019, 05:08 AM   #5
Lotus
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Default Re: Kraftwerks Supercharger Unit

Just be aware that the C38 series Rotrex units tend to shear off the turbine shaft if you hit the rev limiter too often. And you will :-) Honda engines were very susceptible to this due to their high reving nature and power delivery.
The C30-94 does not have this issue. And it will still spin FWD tyres.
Id consider the new C38R unit which is supposed to be a better design.

In either case, it will be a blast.
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Old 09-13-2019, 09:43 AM   #6
Otown03
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Thank you Lotus I am considering putting in a shift light so I shift before hitting the limiter.
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