Roots Tech Q's

Discussion in 'PSI Superchargers Tech Questions' started by 47Hemi, Aug 5, 2017.

  1. 47Hemi

    47Hemi New Member

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    Ok so I posted this in the wrong forum earlier.... If anyone can help me I'm very curious!
    I need a little clarification, I get the standard vs Hi-Helix rotors 60 vs 120. But I'm curious about standard cases, looking to update superchargers and my rules state 8-71 standard case and standard rotors. So when it says standard case is the rule implying that I must have a full opening? Or do they make different openings in a standard case?
     
    #1
    47Hemi, Aug 5, 2017
  2. d.kirkalkyburner

    d.kirkalkyburner Member

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    What class? I believe the rule is refering to a retro case where the opening ends up starting ahead of the rotor where with a stock unit the openings are started at the rotor in the front.
     
    #2
    d.kirkalkyburner, Aug 6, 2017
  3. Mike Canter

    Mike Canter Top Dragster
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    Could be referring to the length of the case. If you lengthen the case and put in a thicker bearing plate in the front you are actually making a super man blower with a built in setback.
     
    #3
    Mike Canter, Aug 6, 2017
  4. 47Hemi

    47Hemi New Member

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    It's for truck pulling, I guess the question I should have asked with a standard 871 do they make different bottom openings? I'm always looking for more power have been running HI Helix in the past so the standard supercharger I'm a little lost in Thanks
     
    #4
    47Hemi, Aug 6, 2017
  5. Mike Canter

    Mike Canter Top Dragster
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    Call Andy Wilfong at Littlefield Blowers (714) 992-9292 and ask him. He is a ITA member and is a expert on blowers
     
    #5
    Mike Canter, Aug 6, 2017
  6. 47Hemi

    47Hemi New Member

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    Ok perfect!
     
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    47Hemi, Aug 6, 2017

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