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  1. #1
    Join Date
    Jan 2012
    Location
    Leeds, Alabama
    Posts
    124

    Default Rikuo Engine Build

    Good Evening Everyone,

    Hope everybody is having a good week so far. Tomorrow is FRIDAY!

    Some of you know that I am restoring a rare 1958 Rikuo RT 750. Its really rare. We believe only two or three ever made it to the States. That being said I thought it would be nice if I shared with you some pictures of the inside of a Rikuo engine. Over the last few days, I have been building the bottom-end of the Rikuo. I know almost all of you have never seen the inside of one of these rare engines. So here tiz:

















    Before I tore the bike down for the restoration, I fired her up to hear the engine. Sounds just like any Flat Head Harley... As I was pulling the engine down, I was very happy to see very little wear, and made notice to the quality of the internal components. Very nicely done! The crank spins happily on roller bearings, with helical cut gears that drive the oil pump, as well as four individual camshafts. The ignition system is powered by a battery, which is re-supplied by the engine mounted gear driven generator. A very interesting machine to be sure. Hope you guys enjoy the pictures!

    Take care
    Last edited by denismccarthy; 02-02-2012 at 06:38 PM.
    J.Denis McCarthy Come visit The Barber Vintage Motorsports Museum
    www.barbermuseum.org

  2. #2
    Join Date
    Nov 2011
    Posts
    5

    Default

    Thanks for the pics, I'll be following this with great interest.

  3. #3
    Join Date
    Feb 2004
    Location
    Utah
    Posts
    211

    Default

    Do Harley parts interchange?

  4. #4
    Join Date
    Jan 2003
    Location
    England
    Posts
    1,284

    Default

    Dear Denis and John, I have a Rikuo parts book from the 1950s which still uses the Harley part numbers from 1932 when Rikuo bought the license to make the bikes. I have several customers from Japan buying VL parts which I believe are going into Rikuo big twins. I am not very familiar with the Harley small twins, but Denis' pictures show a motor which looks like many Harley parts are still interchangeable.

  5. #5
    Join Date
    Jan 2012
    Location
    Leeds, Alabama
    Posts
    124

    Default

    Hey Steve

    I would be very interested in exploring the idea of interchangeability between the two manufactures. I have pretty much everything I need for the engine, but I do need some items for the chassis. Could you direct me to any of your contacts in Japan? We have one or two but haven't had much luck buying anything from them. The most important item is the exhaust system. I believe its completely different than the Harley version. Someone at some point replaced the system on my Rikuo with a 1200cc version. The header pipes are dinged up too... Please let me know if think you can help.

    Thanks!!
    J.Denis McCarthy Come visit The Barber Vintage Motorsports Museum
    www.barbermuseum.org

  6. #6
    Join Date
    Jan 2003
    Location
    England
    Posts
    1,284

    Default

    Dear Denis, my Japanese customers seem to speak only part numbers, and if they are buying from me then I guess the parts are not available over there. On the exhaust, the Rikuo parts book shows the front pipe and all clips with the Harley part numbers, with just the rocket ship muffler having a 1951 part number. I'll try to get the manual, and a grubby Owners Handbook, digitised for the AMCA Virtual Library, but this could take a while.

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