CX500slacker's 1981 Custom Build
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  1. #1
    Senior Member cx500slacker's Avatar
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    CX500slacker's 1981 Custom Build

    Ok so I decided to start a build thread to keep all the progress in one place. Feel free to comment or suggest things if you like.

    Here we go:

    Nov 28, 2016 Purchase 1981 CX500c


    It came with Hard bags and a backrest/luggage rack as well


    Nov 29, 2016 Today

    The seller told me that mice had gotten into the air box and filled it with insulation which got sucked into the carbs when there was an attempt to start it. So I decided to get the airbox out seeing as I don't plan on using it in the end anyway and check the condition of the carbs. During this process I found that the air filter was full of pink fibreglass insulation but it appeared the insulation hadn't gone any further. I chose to continue and remove the air box to check the carbs anyway.
    I removed the rear fender and the hoses from the bottom of the air box and gently massaged the air box out of that tight little space it was squashed into. There was no damage to the air box if you are thinking that I just smashed it lol.

    I checked in the carbs and here is what I found


    Obviously they need to be cleaned but definitely no mouse nest and they don't appear to be in too bad of shape.

    From there I progressed and removed some bars that were around the valve covers, the mirrors (were removed after the photo was taken) which were broken anyway and then I chose to just clean it up to finish the night.


    LOL Im not sure if a build thread is supposed to be written like a story, checklist or a diary so I am going to try and combine all three.

    I am hoping to get some more time in a couple days to take the carbs off and get them into some carb cleaner.
    Motomicah, OCR and Solace like this.
    Wasaga Beach, ON, Canada

    1981 Honda CX500 Custom
    Named: TBD

  2. #2
    Super Moderator CXPHREAK's Avatar
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    Cool.

    How you do your bike ... and your build thread is up to you.

    I'll be watching for progress.
    cx500slacker likes this.
    Rebuilding Handlebar Switches

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  3. #3
    OCR
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    Senior Member OCR's Avatar
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    As much as I would like to have those hard cases for my Custom, I'll bet that shipping across country would be prohibitive.
    Past Master, Dryden Lodge #472
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    we are all given sh*t in life, but some of us learn to turn it into fertilizer and grow from it, and some us try to fling it on others like monkeys.

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  5. #4
    Senior Member cx500slacker's Avatar
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    I live in Ontario and your profile says you live in New York. Im sure it wouldnt be cheap but if you want we can look into it. LMK
    Wasaga Beach, ON, Canada

    1981 Honda CX500 Custom
    Named: TBD

  6. #5
    Senior Member chilimac's Avatar
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    Slacker,
    Here's a tip, if you haven't already found it by browsing this forum. This is to capture your attention BEFORE you start to work on the carbs. The many small bolts that hold the carbs together as well as the float bowls are NOT Phillips head as you might surmise at first glance. After 35 years they're probably stuck very tight, and if you use a Phillips screwdriver you'll almost certainly wreck a few of the bolt heads (ask me how I know!) They're JIS bolts that require a JIS screwdriver, subtly different from Phillips in a very important way. JIS drivers are not common over here (sort of native to Japan) but can be had via the internet. I would have invested in a set, but after destroying about half of the bolts on my carbs, I replaced them all with stainless steel socket head (AKA allen-head) bolts, as have many others on the forum.

    Edit: An advantage of replacing the JIS bolts with socket heads is that you can then remove the float bowls without having to take the carbs off the bike. This is something you'll find handy for checking for stuck or leaking floats, leaking bowl gaskets, cracked overflow tubes, clogged jets, etc.
    Last edited by chilimac; 11-30-2016 at 05:36 AM.
    rscottp likes this.
    1979 CX500 Custom, "Malaria", pronounced "mala-REE-ah"

    Prior bikes I wish I still owned:
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  7. #6
    Senior Member cx500slacker's Avatar
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    Hey thanks Chilimac thats a huge piece of information. I will have to look up JIS screwdrivers.
    Wasaga Beach, ON, Canada

    1981 Honda CX500 Custom
    Named: TBD

  8. #7
    Super Moderator Sidecar Bob's Avatar
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    Stainless screws and aluminum don't play well together. If you use stainless screws in your carbs make sure you use anti-seize to limit the galvanic action. And Randakk specifically recommends against allen screws because it is to easy to put the short end of the wrench into the head and use the long end to apply more torque than the threads in the relatively weak carb bodies.

    BTW: Although real JIS drivers are the better option, this mini Impact Driver set from Princess has bits that are close enough to Japan Industrial Standard to work almost all of the time
    7 pc Manual Impact Driver | Princess Auto
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  9. #8
    Senior Member cx500slacker's Avatar
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    Thanks Bob thats good to know maybe I will try the princess auto route and if I start to run into abnormally stubborn screws I will go after the JIS tools.
    Wasaga Beach, ON, Canada

    1981 Honda CX500 Custom
    Named: TBD

  10. #9
    Senior Member nolimitz's Avatar
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    Buy a can of Pb Blaster. Spray em down and let sit for a bit. That stuff rocks.
    83 GLI650 carport find

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  11. #10
    Senior Member cx500slacker's Avatar
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    Quote Originally Posted by nolimitz View Post
    Buy a can of Pb Blaster. Spray em down and let sit for a bit. That stuff rocks.
    What does the PB stand for?
    Wasaga Beach, ON, Canada

    1981 Honda CX500 Custom
    Named: TBD

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