Two stroke head

Discussion in 'Identification' started by petternut, Oct 29, 2010.

  1. petternut

    petternut Administrator

    Does anyone recognise this please. I've had it for years and thought it S-T but it doesn't match any S-T I've seen.
    Its suggestive of a single cylinder, spark ignition two-stroke marine with an 18mm plug. The head is 5" OD and the plain combustion chamber is 3" dia.
    http://www.petternut.co.uk/unknownhead.jpg
    Time to show again.

    Ideas welcome
    thanks
    Roland
     
  2. Victoria

    Victoria Member

    Roland,

    No doubt our eminent new editor of SEM would be only too pleased to include it under "Identity & Assistance" . Looks interesting!

    Eric
     
  3. petternut

    petternut Administrator

    Time to show again.
     
  4. Skankin_giant

    Skankin_giant Well-Known Member

    Hi Roland,

    From 1st glance it looks like a P3/P4 head, but with some differences..... Am correct in saying the head is slopped?
    Is the “tap” a to do with the waters ways or a decompressor/priming valve?
    Is the out let to the right linked to the water way? it might be something to do with a water cooled exhaust?

    Very intriguing.

    Cheers Steve
     
  5. petternut

    petternut Administrator

    Steve
    The head slopes but not the combustion chamber. The outlet is water and the, probably non-original, "tap" connects to the combustion chamber so might originally have been a primer.

    cheers
    Roland
     
  6. Skankin_giant

    Skankin_giant Well-Known Member

    Well its a odd thing, I dont have a P4 anymore to compare the head, maybe a attempt at water cooling the exhaust of a early marine P5 which resemble the P4 with a gearbox.


    Cheers Steve
     
  7. Skankin_giant

    Skankin_giant Well-Known Member

    This style P5

    [​IMG]

    Cheers Steve
     
  8. petternut

    petternut Administrator

    I've had two of those and its quite different but do please keep thinking

    Ta
    Roland
     
  9. Skankin_giant

    Skankin_giant Well-Known Member

    Yea its diffrent from the standard head P4/5, with the extra high water outlet it took to me that it could of been an idea of creating a water cooled exhaust, before the better know style of P5M was introduced?

    Cheers Steve
     
  10. Skankin_giant

    Skankin_giant Well-Known Member

  11. highrange

    highrange Member

    According to the YouTube caption it's a steam engine. It's the first I've seen with a magneto and spark plug :)
     
  12. Skankin_giant

    Skankin_giant Well-Known Member

    Yea did think that, was looking for a video of a Stuart S.... and stumbled along the Solo and I thought I recognise that head!

    Cheers, Steve
     

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