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jetting database

This is a discussion on jetting database within the ZR-7 Performance Upgrades forums, part of the Kawasaki ZR-7 category; Originally Posted by KawRider00 hey guys its prolly stupid to do it but i took the stock muffler off and i really like the sound ...

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  1. #46
    Rising Star tnichols's Avatar
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    Quote Originally Posted by KawRider00 View Post
    hey guys its prolly stupid to do it but i took the stock muffler off and i really like the sound and was thinking of keeping it off what jetting would u guys recommend doing
    I would probably just leave the jetting the way it is... That way when you get tired of all that noise and put the mufflers back on, you will not have to rejet again

    But if you are already hard of hearing and you do decide to leave them off, you probably will want to rich-en up low speed circuit with 38 pilot jets. The main jet is already pretty big. But check out the thread and you will get an idea of what you need to do. Good luck.
    2001 Kawasaki ZR-7S (ZR750H)
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  2. #47
    Johnny Blue Lightnin'
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    No muffler or aftermarket? If just an aftermarket muffler very little change if any is needed.You could probably get by with just setting the idle mixture screws to about 2 turns out from lightly seated. If you change the air intake side that will require jetting.
    Jon

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  3. #48
    Newbie Atom 3's Avatar
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    Exhaust: Scorpion
    Air filter: Conical's
    Mains: 110
    Pilots: 38
    Needles: 1 Washer
    Elevation: Sea level
    Last edited by Atom 3; 10-11-12 at 07:05 PM.

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  5. #49
    Rising Star custer's Avatar
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    Exhaust- equal length 4-1 w 1 1/2 " baffle
    modified airbox- pods
    K&N filter- emgo
    Pilot Jet not nessecary
    Main Jet 136 secondary main
    Shim / or clip 2nd needle clip podition
    Jet kit- plead the 5th
    elevation (if you know it) near sea level
    Last edited by custer; 05-11-13 at 11:22 PM. Reason: baffle
    Dave

  6. #50
    Supreme Being shakennstirred's Avatar
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    Exhaust= Yoshi RS-3 can
    modified airbox= yes
    K&N filter= yes
    Pilot Jet= standard jet 1.3/4 turns out
    Main Jet= 100(DJ)
    Shim / or clip= 2shims & 3rd clip
    Jet ket= Dynojet
    elevation = 107.552 feet

    with all the problems I had fitting the kit(what happened is in another thread)
    im pleased to say the bikes running great, its pulling harder between 3-6k and is running a lot smoother and snappier
    Last edited by shakennstirred; 06-17-13 at 01:23 AM.

  7. #51
    Rising Star custer's Avatar
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    did anybody else drill their slides?
    Dave

  8. #52
    Supreme Being shakennstirred's Avatar
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    anyone have a copy of the airbox mod you get in the ivans jet kit?
    I would like to see where the holes have to be drilled
    thanks
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    https://www.youtube.com/channel/UCmR...OXdKGl4KlQnU3w
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  9. #53
    Supreme Being shakennstirred's Avatar
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    I have put the holes on the back of the airbox where it faces the battery box, its covered from rain more that if you put them on the top and the battery box etc stops it coming off the wheel.
    since doing it the main thing I have noticed is the hesitation just off tick over seems to have gone
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    https://www.youtube.com/channel/UCmR...OXdKGl4KlQnU3w
    Kawasaki ZR7

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  10. #54
    Supreme Being carryall's Avatar
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    airbox cover holes.jpghere it is...again

  11. #55
    Obo
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    Quote Originally Posted by carryall View Post
    airbox cover holes.jpghere it is...again
    Holey!

    Did you also remove the foam intake baffle in the intake lid? Not that it will likely make much difference with those additional holes.
    2004 Kawasaki ZR-7S
    complete with extra "stuff"

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  12. #56
    Supreme Being shakennstirred's Avatar
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    mine didn't have the foam intake baffle but did have the white plastic, I removed that as that give a bigger opening.
    I didn't want to do the holes on the top like the pic, so had a look and it seems like the best place was at the back where it faces the battery box.
    its covered by the intake that's over the battery and the mudguard n battery box from anything coming off the rear wheel, mine has the undertray also
    next time I take the seat off i'll get a pic.

    not my airbox, just a pic to give you an idea where the holes are
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    Last edited by shakennstirred; 05-01-14 at 07:48 AM.
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  13. #57
    Obo
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    If you drilled under the lip where the white baffle is would that allow extra airflow while giving some water protection or would the neck where it bends cause the same restriction as stock? I'm wondering where the restriction is, at the opening or part way to the air box itself.
    2004 Kawasaki ZR-7S
    complete with extra "stuff"

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  14. #58
    Supreme Being shakennstirred's Avatar
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    Quote Originally Posted by Obo View Post
    If you drilled under the lip where the white baffle is would that allow extra airflow while giving some water protection or would the neck where it bends cause the same restriction as stock? I'm wondering where the restriction is, at the opening or part way to the air box itself.
    that wouldn't help, as your still using the same little intakes that feed into the airbox
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    https://www.youtube.com/channel/UCmR...OXdKGl4KlQnU3w
    Kawasaki ZR7

    K&N,Dynojet,ignition advancer,Brisk racing plugs,Dyna coils,taylor leads,17T front sprocket,Nitron shock,hyperpro fork springs,preload adjusters, GPR Furore Exhaust

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