Piece of Aluminum found in old oil
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Thread: Piece of Aluminum found in old oil

  1. #1
    Junior Member spenzher's Avatar
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    Piece of Aluminum found in old oil

    Hi all! I just bought a 1971 Cl350. Wasn't running when I got it but after changing the lines, gas, cleaning the carbs and replacing rotted rubber parts it started fine. I've already been able to take the bike around the block and it's rode/started fine (besides running rich). I did an oil change and cleaned out the pump. Looking through I found this piece of aluminum in the old oil. The starter isn't working as far as I know even though it's getting power, but it's kick started with one or two kicks. So, can you help me figure out what this bit is to? There was a little aluminum flakes in the oil but nothing that excessive. Should I open everything up or could I get away with riding this season and waiting for winter? Piece of Aluminum found in old oil-15578548880183191551479854092036_1557854944707.jpgPiece of Aluminum found in old oil-15578549724593916599482844596447_1557855011652.jpgPiece of Aluminum found in old oil-15578550910051147367860137425247_1557855114768.jpgPiece of Aluminum found in old oil-1557855168014801044092285493913_1557855195357.jpg

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    Senior Member oupa's Avatar
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    There are far more knowledgeable people here than I. People who may even recognize it!

    If it was me though, barring any obvious noises, shaking or vibrations, I'd ride it! Since you say it started okay, I assume you were riding it. Notice anything unusual??? If not... Just my uninformed and questionable opinion. You are also advised to wait for more knowledgeable responses.
    "They're not like cars with a body that rusts out in a few years. Keep them tuned and overhauled and they'll last as long as you do. Probably longer." - Robert Pirsig

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    Senior Member 76TWIN's Avatar
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    Did you have a look at your clutch basket? It looks like a broken tab from there.
    dmfcb750 likes this.
    '76 CB500T Frankenbike
    '73 CL450 (basket case for now)


    Carpe narem.

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    Senior Member Number13's Avatar
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    The rotor would be my prime suspect.
    Honda CB200 x 2

  6. #5
    Junior Member spenzher's Avatar
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    Quote Originally Posted by oupa View Post
    There are far more knowledgeable people here than I. People who may even recognize it!

    If it was me though, barring any obvious noises, shaking or vibrations, I'd ride it! Since you say it started okay, I assume you were riding it. Notice anything unusual??? If not... Just my uninformed and questionable opinion. You are also advised to wait for more knowledgeable responses.
    I'm totally a wishful thinker I mean...it's not making any weird noises or vibrating weird so I'm feeling hopeful.

    Quote Originally Posted by 76TWIN View Post
    Did you have a look at your clutch basket? It looks like a broken tab from there.

    I haven't opened that up yet but I just got the gaskets in so I will try in the next week or so.
    dmfcb750 likes this.

  7. #6
    Sensei 66Sprint's Avatar
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    Looks like a starter clutch positioning tab to me, BUT without any size reference......Who knows?
    dmfcb750 likes this.
    "I have a mind like a steel trap.....Old and rusty, of antiquated design, and hard to get stuff back out of...."
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  8. #7
    Junior Member spenzher's Avatar
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    Quote Originally Posted by Number13 View Post
    The rotor would be my prime suspect.
    Could be. I am looking at this image I got off ebay and it looks like it could be the corner piece here:

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  9. #8
    Junior Member spenzher's Avatar
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    Okay I'm pretty convinced it's a piece of the rotor. It has the same turns in the aluminum and shape. What kind of job am I looking at here? I'm going to scour the forums for how to remove and replace, but any advice or direction is appreciated.

    Heres another photo I got from this forum:

    Piece of Aluminum found in old oil-rotor.jpg

  10. #9
    Sensei 66Sprint's Avatar
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    Phone me......number below......
    "I have a mind like a steel trap.....Old and rusty, of antiquated design, and hard to get stuff back out of...."
    Contact info: E-mail; [email protected] Phone; 540-525-5199

  11. #10
    Senior Member 76TWIN's Avatar
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    I would first take a look at the damage on the rotor.
    Depending whether you intend to use the electric starter or not and the damage on the rotor, you could just leave it as is and just use the kick starter.

    Removing the rotor is a simple matter of finding the correct size long bolt (probably a 16 mm bolt with 1.0 pitch)
    '76 CB500T Frankenbike
    '73 CL450 (basket case for now)


    Carpe narem.

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