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-   -   Kraftwerks Supercharger Unit (https://www.k20a.org/forum/showthread.php?t=223723)

Otown03 09-11-2019 03:06 PM

Kraftwerks Supercharger Unit
Want to make 450hp on an K20a dc5 motor should I use a C30 or C38 blower. Running E85 gas.

lewis.dickinson 09-12-2019 06:29 AM

Re: Kraftwerks Supercharger Unit

C30 will max at about 435bhp

Otown03 09-12-2019 12:04 PM

Thank you I guess C38 it is.

Otown03 09-12-2019 12:05 PM

Going to be using a 100mm blower pulley. 8300 rpm redline. Does this seem ok.

Lotus 09-13-2019 05:08 AM

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.

Otown03 09-13-2019 09:43 AM

Thank you Lotus I am considering putting in a shift light so I shift before hitting the limiter.

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