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565 bbc ?

  1. #1
    Senior Member hotbo's Avatar
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    Default 565 bbc ?

    okay my gears have been turning and i wanna know what you think

    565 N/A mill solid roller 24 degree heads(AFR-brodix,ect.)tunnel ram ect.


    how much more HP and TQ do you think is going to be made by upping the compression?

    say 1st build 10-10.5 comp.

    say 2nd build 13-1-13.5 maybe 14.1 compression.


    i know cam choices and a few other things will vary here Im just trying to figure a ball park difference.


    100Hp maybe more with the compression motor??

    is it worth it to go high compression???

    just some general questions,thanks HillBillie
    WFLC


    2011 Performer SS
    built by Scott Seastrom.

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    cfm
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    Quote Originally Posted by hotbo View Post
    say 1st build 10-10.5 comp.

    say 2nd build 13-1-13.5 maybe 14.1 compression.

    i know cam choices and a few other things will vary here Im just trying to figure a ball park difference.


    100Hp maybe more with the compression motor??

    is it worth it to go high compression???
    100 hp more is a definate, with cam to match as you stated.

    Is it worth it ? To some yes, to some no. Depends on your pockets, race fuel availability, and maintenance/repair ability/tolerance, and how much you use it.

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    Senior Member Amango's Avatar
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    Don't forget E85! if available will handle 14-1 compression. And is only 2.40 a gal. +/-

    i like the stuff. Good luck.

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    Senior Member hotbo's Avatar
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    thats what im trying to decide is it worth the race fuel deal for 100hp,but is the torque going to sky rocket b/c of the higher compression and of course both motors on kill with the right camshafts for the compression changes.


    this mill will be built for a jet boat app.


    so it still remains is there going to be night and day difference

    i just want to say yes but hoping some of the big guys will step up with there experience and give sound advice on previous experiences.

    thanks Travis
    WFLC


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    built by Scott Seastrom.

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    Highaboosta Unchained's Avatar
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    Quote Originally Posted by hotbo View Post
    okay my gears have been turning and i wanna know what you think

    N/A mill ?
    = Old school

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    The Rogers Is Back! 10-35 RCB's Avatar
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    Quote Originally Posted by Amango View Post
    Don't forget E85! if available will handle 14-1 compression. And is only 2.40 a gal. +/-

    i like the stuff. Good luck.
    What is E85? plus and cons
    "Blessed be the LORD, my rock, Who trains my hands for war, And my fingers for battle." - Psalm 144:1

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    Senior Member tigertooth's Avatar
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    Dont hijack this thread with E=85 and turbo or blower crap. This is about compression. Inquiring minds want to know.

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    Super Moderator HammerDown's Avatar
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    Quote Originally Posted by 10-35 RCB View Post
    What is E85? plus and cons
    85% ethanol from corn I believe.
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    Resident Ford Nut Sleeper CP's Avatar
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    Quote Originally Posted by hotbo View Post

    how much more HP and TQ do you think is going to be made by upping the compression?

    say 1st build 10-10.5 comp.

    say 2nd build 13-1-13.5 maybe 14.1 compression.

    As a basline start with the assumption of 4% increase per 1 point.

    Assuming a 800 hp engine that would be 96 hp. Sometimes thats possiable ( the 4% increase) without the cam change. With a cam change and all 100hp plus is certainley possiable.

    Do you have any flow numbers on the heads? What rpm range are you thinking?

    FYI, 75 lbs ft at 7,000 = 100 hp. 100 lbs ft at 7,000 = 133 hp.

    S CP

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    Senior Member hotbo's Avatar
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    thanks for all the pms,bp thank you


    unchained i dont give 2 shits about turbos,blowers or nos

    what im asking is about compression if you all cant answer me straight then dont answer at all


    ive had some really good guys that wont post b/c of this kinda shitPM methanks guys


    for all others please respond with info that's realistic

    i dont mean to be harsh just want facts

    please no turbo talk,blower or nosTravis
    WFLC


    2011 Performer SS
    built by Scott Seastrom.

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    Senior Member cyclone's Avatar
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    once you put enough compression in an engine that requires race fuel (say 11:1) then you might as well go all the way (14:1 or more) and just nut up for better race fuel.

    And dont skimp on the quality of fuel by trying to run pump gas in an engine that should be on race fuel. Fuel is cheaper than rebuilding your engine because it rattled itself to death on 91 octane.

    my 2 pennies.

    is 100hp worth the cost? no one can make that decision for ya.

  14. #12
    B1 Racing cs19's Avatar
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    Quote Originally Posted by Unchained View Post
    = Old school
    Just curious.. Are all na motors old school in your world?

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    steelcomp was here
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    Quote Originally Posted by cs19 View Post
    Just curious.. Are all na motors old school in your world?
    He lives in a "special" world.

    X2 wht Sleeper said. and Cyclone, as well. If you're going to go hi comp, go high comp and get all the bang for the buck.
    If it's worth it...only you can determin that.
    E85 if you cn get it is an interesting alterntive, but remember it takes almost twice as much alcohol as gas to run right...
    My thought is, with all the super pump gas builds these days, unless you're all out racing or turning 8500rpm, why would you put yourself in a corner with a race gas-only build? Keep the "fun factor" within reach...
    JMO

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    Senior Member hotbo's Avatar
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    [QUOTE=steelcomp;1169513]He lives in a "special" world.

    X2 wht Sleeper said. and Cyclone, as well. If you're going to go hi comp, go high comp and get all the bang for the buck.
    If it's worth it...only you can determin that.
    E85 if you cn get it is an interesting alterntive, but remember it takes almost twice as much alcohol as gas to run right...
    My thought is, with all the super pump gas builds these days, unless you're all out racing or turning 8500rpm, why would you put yourself in a corner with a race gas-only build? Keep the "fun factor" within reach...
    JMO[/QUO


    after a very good PM and some other info im thinking to hell with the race gas.

    make as much as i can on pump and give it my best to reach my goal.

    and by the way my goal for my 565 pump gas(if i stay that way) will be 800hp under 6500 rpm

    is it possible?
    WFLC


    2011 Performer SS
    built by Scott Seastrom.

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