1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

GSXR1000 Fuel Rail flow

Discussion in 'Engine Building' started by K2e2vin, Oct 22, 2005.

  1. K2e2vin

    K2e2vin Senior Member

    Messages:
    8,446
    Likes Received:
    92
    Joined:
    Jan 2, 2003
    Location:
    Raleigh, NC
    I just measured the inside orifice of the GSXR1000 fuel rail; its 4mm...would this be enough to fully support 230cc@40psi(the rating of the injectors)? i plan on running it at 45psi anyways... If 4mm is too small, im going to have a machine shop bore it out; would 1cm be enough?
     
  2. phyregod

    phyregod !!YTINASNI

    Messages:
    9,449
    Likes Received:
    225
    Joined:
    Jun 11, 2005
    Location:
    Central Texas
    Should work just fine. 230cc's in a minute isnt much at all. But I would assume that you are running 4 on a fuel rail? which would bring you to 920cc's per minute.

    Assuming the following examples given by AEM, (your 4mm fuel rail converts to .157 inches)
    If .344 inches can support 499 HP, and .562 inches will support 1100 HP, Then .157 inches will support 228 to 307 HP.

    SO... I'd bore that baby out if I were you. Just to be safe. 1 cm would be fine, it would support around 500HP. And if you are pushing more than that on a bike, you're gonna die anyway, so what do you care??

    Just my two cents.

     
  3. K2e2vin

    K2e2vin Senior Member

    Messages:
    8,446
    Likes Received:
    92
    Joined:
    Jan 2, 2003
    Location:
    Raleigh, NC
    :thumbsup: Thanks man. That was really helpful. I will be boring it out then.

    BTW, this isnt on a bike. Im using GSXR1000 throttle bodies mated to a D15B2 flange; so i will be using the Suzuki injectors with the fuel rail. I just wanted to make sure there was enough fuel. All of this is going on a D15B VTEC engine.
     
Verification:
Draft saved Draft deleted

Share This Page