1973 Honda CB350G Cafe Racer - First Bike Build
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1973 Honda CB350G Cafe Racer - First Bike Build

This is a discussion on 1973 Honda CB350G Cafe Racer - First Bike Build within the Project Builds forums, part of the Caferacer.net Forums category; Hello everyone! New member here. I'm more of a sport bike kind of guy but I developed a new love for vintage motorcycles that is ...

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Thread: 1973 Honda CB350G Cafe Racer - First Bike Build

  1. #1
    Junior Member shortbusgangster's Avatar
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    1973 Honda CB350G Cafe Racer - First Bike Build

    Hello everyone! New member here.

    I'm more of a sport bike kind of guy but I developed a new love for vintage motorcycles that is an entirely different world.

    I bought a '73 Honda CB350G about 4 years ago in boxes in bins and in about 17 months, I built my first little cafe racer.

    Name:  Andrew-Frederick-1973-CB350-wm.jpg
Views: 807
Size:  104.3 KB

    I can post pictures of the build process in there is enough interest.

    The bike will be at the 2018 Cleveland International Motorcycle show from January 26th, 27th, and the 28th. Come say hi!

    Thanks for looking!

  2. #2
    jcw
    jcw is online now
    Senior Member jcw's Avatar
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    Very pretty! Lovely!

    Trailer Queen
    Last edited by jcw; 12-19-2017 at 03:42 PM.

  3. #3
    Junior Member shortbusgangster's Avatar
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    Name:  1.JPG
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    This is what it originally looked like before I purchased it.

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    Junior Member shortbusgangster's Avatar
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    Name:  2.JPG
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    This was the day I brought it home.

    Bought everything for $100.

    It came with:
    1 frame
    2 sets of front forks
    2 gas tanks
    2 seats
    2 engines
    1 drum wheel
    pamco electric ignition
    woodcraft clip ons
    emgo slash cuts

    It sat like this for a couple of months before I dug into it.

  6. #5
    Senior Member miniman's Avatar
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    Even though th finished article isnt my thing, i can appreciate the fact that you actually got that basket case back together.

  7. #6
    Junior Member shortbusgangster's Avatar
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    Quote Originally Posted by miniman View Post
    Even though th finished article isnt my thing, i can appreciate the fact that you actually got that basket case back together.
    and that's entirely okay! I'll slowly add content and explain things! Even if people aren't a fan of it, I'm sure they can appreciate the processes.

  8. #7
    Junior Member shortbusgangster's Avatar
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    Name:  3.JPG
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    The first step was to take everything down to my work space and organize it to see what I had.

    - - - Updated - - -

    Name:  4.JPG
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    Few more pieces.

  9. #8
    Junior Member shortbusgangster's Avatar
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    Name:  20160410_215654.jpg
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Size:  2.92 MB

    A look at the motor originally. Fortunately the previous owner disassembled it to this point and labeled everything and put it away neatly!
    Last edited by shortbusgangster; 12-23-2017 at 07:29 AM.

  10. #9
    Junior Member shortbusgangster's Avatar
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    Name:  DSCF1184.JPG
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    For whatever reason, the picture is turning sideways. If someone can point me in a direction to fix that, that'd be great!

    The processes I took to get it to this point was:

    Aircraft grade paint stripper which takes off the layers of factory clear coat and paint.
    400 grit sand paper sanding in one direction
    [B] 600 grit sand paper sanding in a 90 degree direction. The purpose of sanding two different directions is so you can see how far the sand paper cuts into the material. When it forms new sanding marks in the direction you're sanding, you know you've sanded enough and it's time to move onto the next grit.
    800 grit sand paper
    1500 grit sand paper. Once you start getting into the finer grit sand papers, it's okay to jump up to a high grit since the metal is pretty smooth at that point. Keep sanding in a different direction for each of these steps.
    2000 grit sand paper
    Mother's Aluminum Polish and a buffing wheel. For the buffing wheel, I bought a buffing disk at the hardware store, all thread, some nuts and washers and I used it on a drill press instead since it gave me more room to maneuver my parts.
    Last edited by shortbusgangster; 12-23-2017 at 07:26 AM.
    540nova likes this.

  11. #10
    Junior Member shortbusgangster's Avatar
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    The head was decked 30 thousands to bump a little compression.

    Name:  DSCF1202.JPG
Views: 432
Size:  1.79 MB

    Cylinders were honed and in great shape!

    Name:  DSCF1219.JPG
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Size:  1.82 MB

    Valves and the mating surface was cut at the machine.

    Name:  DSCF1166.JPG
Views: 420
Size:  1.26 MB

    Pistons were in great shape and new rings were installed.

    Name:  DSCF1221.JPG
Views: 435
Size:  1.62 MB

    When gaping the rings, you will want to put the piston rings down in the cylinder, use your piston up-side-down to square the rings up and use a feeler gauge to measure the gap. If the tolerances are too tight, use a fine file to file the gap down and measure again.
    Last edited by shortbusgangster; 01-07-2018 at 12:26 PM.

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