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  1. #1
    casual poster ned stringer's Avatar
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    Default Using a 9 port head on a black block ?

    The poor old 186 has spun a big end ,and, i happen to have a complete black vk injected motor on hand. I hear it is possible to put the 9 port yella terra head on the black block (with some drilling!) but what i want to know is , what gasket kit would i order for it or would it be a combination of two different ones, The cam in the black block - would that be ok to use? The motor doesn't have to be anything special as it is going back into the boat. this is the reason for the 9 port head as the boat has a special manifold.

  2. #2
    casual poster
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    Use the red gasket, and use it as a template for your holes. Don't drill the holes to the same size as the gasket though, they don't need to be that big. I did it the other way around; I put the 12 port efi head onto a 186.

    The camshafts are the same between the 9 and 12 port heads.

  3. #3
    Do you ever leave?
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    Default

    yep ^^^ I also NPT tapped the unused old holes probablydid not have to tho

  4. #4
    casual poster
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    I tapped the holes when I did it too, and fitted grub screws that i purchased from bearing wholesalers along with some loctite. Apparently you don't need to plug the holes since they're covered by the head gasket anyway.

  5. #5
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    I thought that,,,,, afterwards too

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