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Thread: 4AGE cams......choices, dyno results and discussions!!!

  1. #81
    Senior Member Slimer86's Avatar
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    Small ports have a smaller internal area with comparison to the big port head.
    Obvious yeah, I know, but as the area of flow increases, the velocity of the fluid in the area (port in this case) decreases, but as a side note, pressure in the port is increased.

    Small port heads have a higher velocity of fluid flow in comparison to the big port head.

  2. #82
    Moderator Frak's Avatar
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    If someone can supply a nice clean bigport and small port head, I'll flow bench em.
    Hachiroku since 1994

    Quote Originally Posted by LittleRedSpirit View Post
    When i grow up I wanna be just like Uncle Frak Frak.

  3. #83
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    i do but in briz

  4. #84
    Senior Member sun_moon's Avatar
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    by the way

    lol at white people in japan. just lol.

  5. #85
    Senior Member trueno85's Avatar
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    how come you would only use the smallport head? i thought the rods are good enough to hold high rpm as long as you change the pins?

    sounds good mate, if you do find out what the settings were let me know as i would be very interested to know

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    If Bill Sherwood is anything to go by then if using 304 or more cams a big port might be a better option. Obviously this is a pretty crazy engine though.

    Iā€™m guessing those hp figures are it the flywheel.

  7. #87
    Senior Member sun_moon's Avatar
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    well a smallport has the best port velocity and also compression stock compare to a bigport also stock.

    modify them both and still the smallport should have an advantage.

    for a streetable engine i would always use a smallport.

    my mr2 is a bigport and my trueno is a smallport and the 2 engines feel pretty different i think in terms of streetability and other factors.

    toyota wouldnt switch to an inferior design
    lol at white people in japan. just lol.

  8. #88
    Veteran slide86's Avatar
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    same opinion for a forced induction engine?

  9. #89
    land yacht
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    for forced induction 20v

  10. #90
    Veteran Robo86's Avatar
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    hmm after this i now want ae111 quads + hks 264s... like the sound of 90 wheel kw

    http://shirtstuckedin.com/
    my corolla
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