Water Injection Set Up

Discussion in 'Turbo' started by jermzfree, Nov 28, 2016.


  1. jermzfree

    jermzfree Registered

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    I have my gen 1 rcc stage 1 running 8lbs of boost. It was tuned without water injection. Now that I have the W/I kit on the bike I would like to use it as a safety measure, and for hp gains down the road. At 14.2 volts the nozzle I have sprays approx. 124cc/min. Is this a good size for around 257hp running 50/50 water/meth? I have plans to run 290 hp. Does anyone know a good nozzle size for that hp range?
     
  2. gsxrdan2

    gsxrdan2 Registered

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    What kit are you using?
     
  3. jermzfree

    jermzfree Registered

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    I am not sure of brand but it consists of a pump, and boost controlled solenoid near the nozzle that opens the flow. The nozzle sees around 150 psi.
     
  4. hendrixgr

    hendrixgr Registered

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    Have a look here https://www.rbracing-rsr.com/waterinjection.html
    It mentions cc which if i am thinking straight is independent of pressure.
    More pressure will yeld more cc but since you know the cc output of your nozzle then you can compare your system with the one in the link.
    The important thing is the ratio of water to fuel which hovers around 10-15%
    If you know how much fuel you are spraying in cc per minute then adjust for 12-13% water by volume.
    Chris
     
  5. jermzfree

    jermzfree Registered

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    Nice read! and geared directly towards bikes. Sounds like 170cc/min for 290hp and around 140cc/min for 250hp. Their systems use 1000psi which sounds very high compared to most W/I systems.
     
  6. jermzfree

    jermzfree Registered

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    BTW the pump I have is a shurflo.
     
  7. hendrixgr

    hendrixgr Registered

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    Yes i also think that 1000 psi are not needed but then again they know better.
    Their pump surely looks smaller that the beast i got on my motorcycle.
     
  8. jermzfree

    jermzfree Registered

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    What set up you got?
     
  9. gsxrdan2

    gsxrdan2 Registered

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    I have an AEM setup. Not sure what size nozzle but its the smallest one 250cc/min.
     
  10. hendrixgr

    hendrixgr Registered

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    I have a hybrid system i found on a good price, the pump is exactly the same as the AEM, the nozzles are from Aquamist and the other parts are common a relay, a pressure switch etc.
     
  11. jermzfree

    jermzfree Registered

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    How much boost are you running?
     
  12. gsxrdan2

    gsxrdan2 Registered

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    14 on pump gas and 25 on c16
     
  13. jermzfree

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    Intercooler?
     
  14. gsxrdan2

    gsxrdan2 Registered

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    No just a built engine.
     
  15. jermzfree

    jermzfree Registered

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    gsxrdan2; do the recirculating style pumps stay running even when they are not spraying?
     

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