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Thread: Slipped a tooth or two

  
  1. #1
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    Slipped a tooth or two

    Need some help guys/gals

    I'm sure my z20leh has slipped a timing tooth or two,

    Top end rattle, (timing belt loose, yeh i know needs sorting)

    Before i take the head off,

    I want to reset the timing, as it is, with slack belt n all

    Taking a chance I know,But i want to see by sound the extent of the damage,

    But don't know how to set the timing up,(i'm only a novice lol)

    Any advice will be very welcome

    Paula

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    MrStush's Avatar
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    Paula, others would say this could be done.. However the chances are you have more than likely bent a valve or two. You'd be very fortunate if you have managed to get away with this unscathed!..

    If you are taking the head off anyway, do you really need to sort the timing out first?.. My thought would be if the head comes off the timing will need readjusting anyway..
    Star Silver SRI Turbo..'Red.Dot Reloaded'..Cybox Precat, Cybox Catback SS Exhaust..K&N Panel Filtered...9Ltr EDS SMIC!!.....

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    Quote Originally Posted by Paula View Post
    Need some help guys/gals

    I'm sure my z20leh has slipped a timing tooth or two,

    Top end rattle, (timing belt loose, yeh i know needs sorting)

    Before i take the head off,

    I want to reset the timing, as it is, with slack belt n all

    Taking a chance I know,But i want to see by sound the extent of the damage,

    But don't know how to set the timing up,(i'm only a novice lol)

    Any advice will be very welcome

    Paula
    it sounds like youve never changed a timing belt,i would recommend you get someone who no's what there doing to check it out.

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    Quote Originally Posted by MrStush View Post
    Paula, others would say this could be done.. However the chances are you have more than likely bent a valve or two. You'd be very fortunate if you have managed to get away with this unscathed!..

    If you are taking the head off anyway, do you really need to sort the timing out first?.. My thought would be if the head comes off the timing will need readjusting anyway..
    Thankyou for your reply,

    And very sound advice,

    However i go by my gut feelings,

    There is a rattle, definitely a top end rattle, quietened when slightly revving,

    I'am very lucky,

    What i feel is happening is because of the mistiming sequence some valves are hitting the top of the pistons, not all.

    I know this could well have done some damage ie bent valves, or worse.

    but maybe i will get away with the timing set up as it should be,

    However my options are

    1 as said
    2 Take the engine out, and take the head off

    I am very methodical in my approach

    I realy can't see me taking the head off in situe, i have looked and looked again,
    and to be truthfull it will be far easier to remove the engine.


    Paula

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    madgezza's Avatar
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    i had the same happen in a mondeo the mrs used to own it slipped 1 tooth and was not running at all right so i thought i would just put the timming right (move it back a tooth) just to see what happened and bobs your uncle no damage at all .

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    Stu-gsi- turbo : it sounds like youve never changed a timing belt,i would recommend you get someone who no's what there doing to check it out

    I have Stu several times, but are not familiar with this engine,

    And rather than being, making a mistake, i need some first hand knowledge of this engine, rather that than make a balls up of it.

    Paula

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    are you familiar with how to set up/ check timing using the marks on the crank pulley and the ones on the cams??
    At the end of the day, it gets dark!!!!!

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    I know that the crank pulley has a mark which has to line up with the cover.
    and that the marks on the cam pulleys have to be in line,
    when i do this , or shall i say try to do this the cam pulleys are a lot out,

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    when you say out a lot, they are not at the bottom are they?? are both the cam pulleys in sync or are they different positions
    At the end of the day, it gets dark!!!!!

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    lee gsi's Avatar
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    Easy as this lol:


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    The truth is always the truth even if you haven't realised it yet...

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