Injector hat spray bar power gain ?

Discussion in 'PSI Superchargers Tech Questions' started by SMOKIN JOE, Aug 23, 2021.

  1. SMOKIN JOE

    SMOKIN JOE Member

    Joined:
    Nov 23, 2006
    Messages:
    250
    Likes Received:
    1
    I see alot of cars running some sort of spray bar in there hats , What's it worth on a screw ?
     
    #1
    SMOKIN JOE, Aug 23, 2021
  2. kosky racing

    kosky racing Comp Eliminator

    Joined:
    May 11, 2003
    Messages:
    899
    Likes Received:
    49
    the choice is yours?
     
    #2
    kosky racing, Aug 23, 2021
  3. jay70cuda

    jay70cuda Well-Known Member

    Joined:
    Sep 30, 2009
    Messages:
    1,139
    Likes Received:
    35
    I know on a roots their worth around 80-100 hp. That dual spray bar for a screw from Jeff Bohr racing is amazing to watch how much fuel is atomized in the hat. That's gotta be worth a bunch since a screw requires so much fuel
     
    #3
    jay70cuda, Aug 23, 2021
  4. Mike Canter

    Mike Canter Top Dragster
    Staff Member

    Joined:
    Mar 10, 2004
    Messages:
    4,630
    Likes Received:
    189
    It all depends on the humidity. If you run in Las Vegas where the humidity is super low it will act like a swamp cooler and will really lower the incoming air temperature thereby lowering the DA so you can burn more fuel. If you run in Houston or Gainesville where the humidity is high then not so much gain because it will not cool the incoming air. Overall you will probably get some gain if you adjust the fuel to match the change of DA caused by the spray bar and humidity.
     
    #4
    Mike Canter, Aug 24, 2021
  5. TOL

    TOL Active Member

    Joined:
    May 18, 2005
    Messages:
    1,352
    Likes Received:
    18

    Please explain a dual spraybar for a screw. Trying to picture how that works...........
     
    #5
    TOL, Aug 24, 2021
  6. jay70cuda

    jay70cuda Well-Known Member

    Joined:
    Sep 30, 2009
    Messages:
    1,139
    Likes Received:
    35
    I'm sure he has a video on Facebook but I don't have Facebook. I seen it on Instagram and in awe of it. He is located in Michigan and is excellent to deal with. Very straight forward and honest. Jeff Bohr racing.
     
    #6
    jay70cuda, Aug 24, 2021
  7. Mike Canter

    Mike Canter Top Dragster
    Staff Member

    Joined:
    Mar 10, 2004
    Messages:
    4,630
    Likes Received:
    189
    They use dual spray bars with Roots also. You either have to have a horizontal bar or divide it up into two vertical bars between the butterflies
     
    #7
    Mike Canter, Aug 24, 2021
  8. Ryan Van Dyk

    Ryan Van Dyk New Member

    Joined:
    Apr 14, 2018
    Messages:
    19
    Likes Received:
    0
    Do you need to add more fuel to the hat when changing from hat nozzles to spray bars due to atomisation or can you use the same nozzle area that you were using on the hat nozzles for the spray bar?
     
    #8
    Ryan Van Dyk, Dec 3, 2023
  9. lucky devil

    lucky devil Member

    Joined:
    Apr 14, 2008
    Messages:
    283
    Likes Received:
    11
    We use the Hammer / Bohr hat with the spiral spray bar . It works really well and has really helped our performance . I can’t put an ET / HP number on it for sure but it certainly helps with intake temp and crispness if the throttle .
     
    #9
    lucky devil, Jan 1, 2024

Share This Page





XenPorta 2 PRO © Jason Axelrod from 8WAYRUN.COM