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Thread: 4ag(t)e cam timing(lobe centres)

  1. #1
    Forum Member 1st year Apprentice
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    Apr 2006
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    vic
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    Default 4ag(t)e cam timing(lobe centres)

    Hi,
    I am hoping someone out there can help me with a couple more technical cam timing questions.I have tried searching and did learn alot about the lobe centre settings for turbo engines and also advancing/retarding the cams.
    My main query is what is the lobe seperation angle for the standard 4agze cams.
    Looking on Bills site I have found the timing events and the duration but no lobe centre figure.
    I need this figure to set my base timing as I dont have the timing cover backing plate with the marks!
    I need the base setting correct in order to set my cas on the correct tooth
    I have degreed the cams in to 110 lobe centres as recommemded by "the internet" for mild cams but I dont know for sure if the cams are now in the standard postion in relation to the cas tooth
    my timing events dont seem to match up to bills,but i also seemed to have more then 232 degrees duration? more like 254.Is the 232 advertised or at a certain lift.Although my figures are close enough to not be at a different lift figure?


    edit: I know people say put inlet cam pin at close to 12 oclock and ext at close to 6 but without marks I could be 1 or 2 teeth out!
    I have adjustible cam gears,should i put the standard ones on to setup intially,then mark the head somewhere for tdc setting?
    hope that makes some sorta sense
    cheers for any help
    Ryan
    Mk2 Escort 4agte,Supra box,hilux diff,208rwkw
    Currently Broken:Oil Pressure!

    http://img404.imageshack.us/img404/6572/dsc1525xk5.jpg

    http://img508.imageshack.us/img508/8296/dsc1530xb2.jpg

  2. #2
    Olde mechanic Carport Converter oldeskewltoy's Avatar
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    Oct 2006
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    oregon
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    Default Re: 4ag(t)e cam timing(lobe centres)

    screen capture from TRD Bible - AE92 engine, so cam timing should be the same.... cam circle on far left




    in case it is too small.... intake opens 8 BTDC, closes 44 ABDC Exhaust opens 47BBDC, and closes 5 ATDC
    Information is POWER... learn the facts!!

  3. #3
    AVGAS DRINKING Carport Converter 30psi 4agte's Avatar
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    Feb 2006
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    Default Re: 4ag(t)e cam timing(lobe centres)

    can you put the backing plate back on to set it up?

    how come you took it off ?

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