Whipple Versus PSI

Discussion in 'PSI Superchargers Tech Questions' started by TOL, Nov 21, 2020.

  1. TOL

    TOL Active Member

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    Hypothetical question.............

    If a person had a given engine, and ran it with a PSI-C, and then ran it with a Whipple A980 (axial), would there really be that much of a difference at the end of it all?
     
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  2. rb0804

    rb0804 Active Member

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    Not sure what your asking but the whipple displaces more than the PSI, so you would have to spin the psi harder to make the same air. I’m thinking when they were both “legal” the whipple was somewhere in the 58% overdrive and the PSI was 125%?
     
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  3. TOL

    TOL Active Member

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    Thanks Rob. Here is kind of what I am wondering........

    Both superchargers will have their own mechanical speed limitations tied to them, and certain rotor efficiencies versus speed as well. This is totally apart from any class limit rules considerations.

    So in a pure Outlaw class, if a person ran a PSI-C at 228% could a Whipple A980 keep up with or even exceed the performance potential of the PSI-C at 228% ?

    I guess I would also ask whether anyone knows the weight difference between a PSI-C and a A980?
     
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  4. Ron C

    Ron C Jr. Dragster

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    That Whipple moves about 25-26% more air per revolution. One would have to see the Efficiency graphs to determine if theirs a cross over.
     
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  5. Blown5402

    Blown5402 Member

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    30#s heavier with the same options, blower bag, belt guard and pulley--Jim in TN
     
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