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Thread: 916SP Cylinders - 102mm skirt or similar

  1. #1
    Join Date
    Feb 2020
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    Newark
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    Default 916SP Cylinders - 102mm skirt or similar

    Evening all,

    Looking for a pair of 916SP cylinders, the ones with the 102mm skirt. Idealy 96mm bore but happy with 94mm. For a 955 project I've got simmering.

    Unless anyone is aware of other cylinders I can use?

    Cheers,

  2. #2
    Join Date
    Aug 2007
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    Cornwall S.W. England
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    Default

    Can't help you with what you want.
    But I can tell you what's needed to be done with these barrels...
    Turn down the OD of the skirts to 101m and then machine the C/cases to suit them.
    This modification leaves enough meat on the skirts for strength and by taking less out of the mouths of the cases leaves them stronger.
    This info' came from race teams that ran 926/955 Desmoquatro motors.
    I carried out this mod' on the 916SP barrels that I had bored to 96mm and replated for my 955cc motor.

    Steve R

  3. #3
    Join Date
    Jan 2013
    Location
    Western Australia
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    292

    Cool

    Cylinder part # for racing 96mm cylinder is 12510251A, there was new available a year or so ago on flea bay.

  4. #4
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    Default

    Thanks for the info chaps.

    Machining less off the crankcases and a little off the cylinders is interesting.....

    Whilst I appreciate this is not in the technical section, I was pondering over a beer last night as I think these are going to be hard to come by. I've got a set of sacrificial 748 cylinders, weld build-up and machine back to size. Possibly machine an aluminium slug for the cylinder to prevent distortion whilst welding. Thoughts anyone?

  5. #5
    Join Date
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    Bris Vegas
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    Send them here https://www.millennium-tech.net/
    And tell them what you want.
    Griff
    To infinity and.......

  6. #6
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    Dec 2008
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    toronto ontario
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    Default

    i have a set and a whole lot more stuff for a 955
    Paul

  7. #7
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    Default

    Quote Originally Posted by huit View Post
    i have a set and a whole lot more stuff for a 955
    Paul
    PM sent!

  8. #8
    Join Date
    Jan 2013
    Location
    Western Australia
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    Cool

    Google

    NE-0012510251A

    96MM cylinders new

  9. #9
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    Feb 2020
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    Newark
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    Default

    Quote Originally Posted by Ducal View Post
    Google

    NE-0012510251A

    96MM cylinders new
    Thanks for that, I sent them a message asking them to confirm the dimensions. They got back to me, dimensions are good but they only had one left!

  10. #10
    Join Date
    Feb 2011
    Location
    Denmark
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    772

    Default

    I bought 1 there last year to complete a spare set..
    Maybe easier to find another single than a set .. ?

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