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Thread: Standard pinto head vs Sierra injected pinto head

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    Bodger RS Eskie's Avatar

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    Standard pinto head vs Sierra injected pinto head

    Hi chaps, what sort of flow and horsepower figures if both were in standard form on a standard bottom end with the same induction. Want to know how much better the injection head is over a pinto?

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    I support TS Turbosport Subscriber rallyrob's Avatar

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    Re: Standard pinto head vs Sierra injected pinto head

    I dont think it's much, but it is a definite improvement.

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    Re: Standard pinto head vs Sierra injected pinto head

    the injection head is a considerable improvement, IIRC its about 10% better on intake flow. if i can find one of each unmodified i would back to back flow test them.

    in power terms hard to say, it somewhat depends on the engine spec, if you had two totally standard engines, but one had the injection head, i guess youd see 5bhp difference, but if you talking an engine with a cam and better induction i would expect the difference to be more

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    Bodger RS Eskie's Avatar

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    Re: Standard pinto head vs Sierra injected pinto head

    Thanks guys! appreciate the replies. Would be quite cool to see the difference in the 2 if you do happen to get the chance Graham.
    Regards Jonny.

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    Re: Standard pinto head vs Sierra injected pinto head

    Quote Originally Posted by RS Eskie View Post
    Thanks guys! appreciate the replies. Would be quite cool to see the difference in the 2 if you do happen to get the chance Graham.
    Regards Jonny.
    its on my list of things to do, trouble is its a long list! but i will see what i can do quickly
    Last edited by Graham; 14-02-2018 at 11:11.

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