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Thread: 4 cylinder R51 ???

  1. #1
    Registered User lmo1131's Avatar
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    4 cylinder R51 ???

    Posted on Facebook this morning with no other information.

    If it's photoshopped, it's a VERY good job.

    Anybody else have any information on this?

    edit - something's not right about the crankcase castings...

    "It is what you discover, after you know it all, that counts." _ John Wooden
    Lew Morris
    1973 R75/5 - original owner
    1963 Dnepr

  2. #2
    Rally Rat 1074's Avatar
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    Twin engines

    Haven't seen this one but there was a twin engined R69S at the third MOA National in Branson. Sorry but I don't have a picture of it. It had a downdraft carb on each side as I remember. Might have had a Vermont license plate. I seem to remember a big German Shepard laying across the gas tank. Or maybe my memory is playing tricks again.
    Boxerbruce

  3. #3
    rabid reader dbrick's Avatar
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    That's convincing, Lew. Looks like a real thing to me.
    David Brick
    Santa Cruz CA
    2007 R1200R

  4. #4
    Registered User lmo1131's Avatar
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    Looks like a real thing to me.
    I think so too. There is too much minute detail to be just a photo hack job.
    "It is what you discover, after you know it all, that counts." _ John Wooden
    Lew Morris
    1973 R75/5 - original owner
    1963 Dnepr

  5. #5
    Liaison 20774's Avatar
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    I, too, looked for "copied" detail from one engine to the other. But I keep thinking how would one possibly synch the two engines?? Synching two carbs is tough enough on a twin cylinder engine...but two engines with separate cams, cranks, etc.
    Kurt -- Forum Liaison ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  6. #6
    Registered User barryg's Avatar
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    Looks like a lot of work for so little in return. That rear facing exhaust manifold had to be tough on the exhaust valves and seats, feet, and shins, legs. Ouch!

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