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Kirbys head work

Discussion in 'Motorcycle Tech Talk' started by baggerpaul, Jun 26, 2012.

  1. baggerpaul

    baggerpaul Well-Known Member

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    top notch is all i can say ! guide work was awesome for the small amount of port work that was done . these heads flow .going to the late model style valves made the valve train lighter and flowed better around the shorturn and port area . bottom and top end power greatly improved . it takes quite a bit for me to say wow ! but the wow factor is there with the geezer glide for sure. still a little tweaking here and there . but its almost perfect then ill set the air fuel on the dyno.
  2. hotroadking

    hotroadking Super Moderator Staff Member

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    Cool, all you need is my woods 505 Rebel carb kit with
    super light titanium needle and you won't be able to keep the
    front wheel down.
  3. baggerpaul

    baggerpaul Well-Known Member

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    im skeered of the titanium needle ill loose control lol
  4. JohnnyBiker

    JohnnyBiker Well-Known Member

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    Awesome. I am looking forward to when I can get some of those heads. Hey I forgot to ask you. At one point you were talking about doing something with the valves that would help give some more room in the quench or tighter quench. Was it an oversized valve or something like that?
  5. baggerpaul

    baggerpaul Well-Known Member

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    well what i was explanation that we were talking about was . diffrent valves give diffrent cc amounts due to the volume area in the cumbustion chamber . if the valve is flat like the top of a piston the volume in the chamber will also be affected . if you would use a valve that is dished it would be less . but very minute amounts but they due add up . also making sure the valves are un shrouded . the tighter the quench the better as far as im concerned . (that you can get away with that is) lol . kirby decided the valve sizes for the cam and intake close points 1.900 1.585 . I respect the path he chose for the heads and they work great .
  6. JohnnyBiker

    JohnnyBiker Well-Known Member

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    That is what it was, a dished valve.... Something like a 1cc dish if I remember right?

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