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Thread: excessive play in harmonic balancer/crank

  1. #1
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    Default excessive play in harmonic balancer/crank

    my 4AC died last month,
    was setting the timing after replacing my carbie with a weber.
    and found that there is a fair bit of play on the crank.
    was just wondering if that is normal, or a tell tail sign of something bad.
    when i turn the motor, just after it has passed TDC and compressed i went to turn it back to line it up and there was heaps of play.
    just thought i'd ask before i do anything else.

    cheers
    Last edited by Ade_Mc; 16th September 2009 at 08:24 PM.
    AE86....robbing me! check the build.
    http://www.ae86drivingclub.com.au/fo...read.php?t=445

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    Veteran shift_rook's Avatar
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    you mean there was play or the crank was actually moving position? otherwise no, any sort of play in the crank is bad, though the wayt you're explaining it having that sort of play i doubt the engine would run

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    the engine hasn't been running,

    it died about 4 weeks ago, and i have only just organised time to look at it properly. it isn't starting...so there maybe something wrong with it. i will take a video of it.

    basically after it compresses after TDC i can turn the harmonic pulley wheel back and forth about 5-10degrees, the crank isn't moving when i do this(as i have the timing covers off and can see that when i do this the teeth where the timing belt turns the crank do not move).

    forgot to mention its a 4AC
    AE86....robbing me! check the build.
    http://www.ae86drivingclub.com.au/fo...read.php?t=445

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    taken the crank pulley off?

    sounds like you may have chewed out the keyway.
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  5. #5
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    yeah i had a feeling that might of happened.
    won't get a chance to take it off till monday, flat out with work/study.
    hope it is only something small like that.....not having a car for 4 weeks and counting sucks balls!
    AE86....robbing me! check the build.
    http://www.ae86drivingclub.com.au/fo...read.php?t=445

  6. #6
    Veteran Rice86's Avatar
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    try buying your car and not driving it for about 2years in total...FFS lol
    dose

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    well actually i bought the car august 2 years ago. and have driven it for a total of 3-4 months!!!!!!
    AE86....robbing me! check the build.
    http://www.ae86drivingclub.com.au/fo...read.php?t=445

  8. #8
    Site Supporter Javal's Avatar
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    I've never seen a crank pulley with a munted keyway.

    I have however seen a keyway snapped off a crank though.

    Remove and inspect, son.
    You can have any brew you want... as long as it's a Datsun / Corolla / What is that?

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