ZX9R carbs what pressure do they run at?

Discussion in 'Throttle bodies & non-OEM ECUs' started by Jolfa, Jul 3, 2008.

  1. Jolfa

    Jolfa Forum Junkie

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    I've recently got my bike carbs for my 2.0 16v, from a ZX9R

    I need to know how big I should drill the jets, as I've heard 1.6 and 1.8 so I'm not sure what'd be best

    And which jets to drill (asin where are they on the carb assembly) pictures would be fantastic [:D]
     
  2. 2dubnick Forum Junkie

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    on your original bike carb thread someone posted up a link from a vauxhal mag which is very helpful its a guide by boggs bros i think
     
  3. 2dubnick Forum Junkie

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  4. Jolfa

    Jolfa Forum Junkie

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    Hadn't seen that, ta, and cheers to whoever posted it [:p]

    Assume it's the same thing for ZX carbs, any differences I should expect?
     
  5. Jolfa

    Jolfa Forum Junkie

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    ok new quick question, as per new title..?
     
  6. gillm

    gillm ***** User

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    i would say between 3 and 6 psi
     
  7. James_mk2 Forum Member

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    i'd say between 3 and 5psi, if you can get hold of the bike pump from the same bike as the carbs and run that being fed by a lift pump it will keep the pressure right, or get a pressure reg as bike carbs don't like pressure fluctuation
     
  8. Jolfa

    Jolfa Forum Junkie

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    I've heard R1 carbs will only run at 3psi from my mate who has done this to a 16v, and I'm told they're so temperamental, so I need to know exactly what ZX9R's run at so I can get mine right first time...
     
  9. gunit-84 Forum Member

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    hi ive got 2.0 16v with zx9r carbs running on a R1 pump at the mo, took out the original pump and put it in its place, used the existing wires too, it works fine but not had mine set up yet so cant say whether it will provide the fuel at the top end, only 35 with built in regulator and filter so not bad really, let me know how you get on,
     
  10. Tristan

    Tristan Paid Member Paid Member

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    I ran 3 psi with Honda CBR 900 Keihins , on a 2.0 16v Zetec in a Mk2 Escort . With the main jets drilled to 1.8. Then we bought jets that size , as the angle and taper of the hole in the jets are supposed to be critical.
     

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