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Thread: POTR Big Valve head Spec

  1. #1
    Max Power Tuner Mr Hans's Avatar
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    POTR Big Valve head Spec

    This is what Silvio sent me with regards to head specification.

    "39mm inlet valve, stock is 36mm
    33mm exhaust valve, same as stock but sodium fitted for high temps
    enlarged valve seats
    shortened valve guides for better flow in bronze for less friction at high temps, stock only exhaust is in bronze
    polished and ported ducts
    cnc machined valve seats, vacuum checked for optimum seal when valve is closed
    uprated valve springs
    skimmed and combustion chamber recess
    special tcrime cum inside"

    An additional note is:

    "Head prices will increase soon, valves will increase soon, lot of labour, is hard to find good heads.......and need days and days of labour !"
    Twitter: @ImJamesHans

  2. #2
    Fred Elliot, i say Fred Elliot! Mawbster's Avatar
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    current price for these is £540 including vat and delivery.

    also nthanks for the specs james.

  3. #3
    Punto know it all
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    Thats not a bad price to be honest for an uprated head of that extent!

  4. #4
    Punto Lover
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    is that for a complete new head, or is that with sending your old one away?

  5. #5
    Fred Elliot, i say Fred Elliot! Mawbster's Avatar
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    the info i know is :-

    the head is made from a tipo head. as its stronger . you can send the gt head away to be done but is weker and more prone to faliure. also the part exchange value of the gt head is minimal and will end up cosing you more in total as postage to italy is not cheap. better off just buying an item straight from potr

  6. #6
    Max Power Tuner Mr Hans's Avatar
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    Its outright new head.
    Twitter: @ImJamesHans

  7. #7
    Punto know it all
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    mine arrived today.



  8. #8
    Punto Sports Club Member webber77's Avatar
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    Ooohhhhh shiny new. Whens it going on??

  9. #9
    Punto know it all
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    this week hopefully. just waiting for a coolant sender from glenn now.

  10. #10
    myredbullet
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    they some smaller combustion chambers?

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