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Thread: Bespoke exh manifolds

  1. #41
    Spanner Monkey

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    Re: Bespoke exh manifolds

    Quote Originally Posted by stevieturbo View Post
    And a bit of an argument with some info and other links

    https://www.pistonheads.com/gassing/...&t=1393659&i=0
    What a cracking thread. Really enjoyed that one. Oooh some possible “handbag” moments too hehehehe
    Are we there yet?

  2. #42
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    Re: Bespoke exh manifolds

    Quote Originally Posted by stevieturbo View Post
    Engine size doesn't really matter though, ultimately airflow is airflow....and a certain amount of air, will allow a certain amount of power...give or take a few variables.

    So whether it's a 500cc engine making 100hp, or a 5,000cc engine...it's still 100hp worth of air moving. Some characteristics may change just.

    .
    sort of, but when talking bhp you have to take rpm into account, an engine doesnt make bhp it makes torque. which is the whole point of the big arguement going on on piston heads.

    i achieved 82lbft per litre from a cranky old bmw 2v engine, im sure someone who knew a few more tricks than me could of made more. did Anderson really make that much power from a 1700 x/flow? not sure myself, but you never know, partly because you never know the exact test conditions, on a pinto i recall seeing a 2bhp gain at around 2500rpm by raising oil temp 20 degrees, thats about 5lbft. so if we had got the oil hotter or maybe gone thinner with it when testing my old bmw would we of seen even more torque?? who knows we never even measured oil temp! eitherway its seems a shame to see two well known names slagging each other off

  3. #43
    Spanner Monkey

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    Re: Bespoke exh manifolds

    Quote Originally Posted by Graham View Post
    eitherway its seems a shame to see two well known names slagging each other off
    Isn’t it!
    Are we there yet?

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