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Thread: Z18XE engine details

  1. #1
    Regular Member Ste's Avatar
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    Vehicle : Jaguar XF 3.0D V6

    Trim : Black

    Engine : 3.0D V6

    Year : 0000

    Default Z18XE engine details

    If the crank shaft is at TDC on cylinders 1 and 4, and if cylinder 1 is on the compression stroke what rotational position are the camshafts in?

    Also, what position is the 'missing teeth' on the crank position reluctance ring? I hear that this ring is effectively bolted to the crank.


    Or where can I find out this information?


    Cheers.

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    Vehicle : Vectra C Hatchback Facelift

    Trim : Club

    Engine : Z18XE

    Year : 2005

    Mileage : 100085

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    Hi Ste..without trying to be a smart ar*e...have you tried The Haynes manual for the Vectra C????? There is information on the Z18XE engine in Section 2A..1.8 litre petrol engine in car repair procedures....Timing mark positions on the camshaft sprockets, head and crankshaft pulley etc with No.1 piston at TDC...cheers

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    Cams and crank have timing marks on them, it's a simple matter of aligning them, lock the crank at the bell-housing and lock the cams up in position. Fit belt, turn over by hand, recheck timing marks on all pulleys and your ready to go.

  4. #4
    Regular Member Ste's Avatar
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    Vehicle : Jaguar XF 3.0D V6

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    Engine : 3.0D V6

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    Default

    Hi Tony.

    I don't have a Haynes manual for the Vec.

    I know there are timing marks on both the cams and on the crank gear that drives the timing belt, but are these aligned when the crank is at TDC? They don't have to be of course, as long as this reference point is correct it doesn't matter where the crank is at (if you know what I mean).

    If you have a Haynes, could you please confirm that these marks are all aligned when at TDC and also could you PLEASE tell me how the crank toothed ring for the position sensor is aligned at this same time.

    Thanks Tony.

    My mates parents live on Church Lane (small world)

  5. #5
    Regular Member Ste's Avatar
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    Vehicle : Jaguar XF 3.0D V6

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    Engine : 3.0D V6

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    Default

    Thanks WCR, but that isn't what I am after. I don't need to time the engine up, but need a bit more detailed info to solve a mysterious fault.


    What I am really after is the relationship between piston positions (ie TDC) and the camshafts (or which valves are rocking, full open etc) and also the toothed ring that the crank sensor picks up on (the 'missing teeth' position when the engine crank is at a known position, eg TDC).


    OR if you know the crank angle between missing teeth position and when the cam sensor switches between 0 and 5V (or other way round) that would be EXACTLY what I am after.

    I have a problem with cam sensor circuit. I am convinced that it is a synchronisation problem between crank and cam sensors and have data logged the output of each sensor and got this angle to be 65° of crank rotation.

    The dealer has hit a stop too.

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    Hi Ste, I can confirm that no.1 piston is at TDC on the combustion stroke when all the timing marks are aligned. On a four stroke cycle the camshaft is turning at half crankshaft speed hence you have to rotate the crank two revs after changing timing belt / chain to confirm correct alignment (twice the number of teeth on cam sprocket compared to crank socket. Sorry dont know details of crank reluctor ring. HTH

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    Regular Member Ste's Avatar
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    Vehicle : Jaguar XF 3.0D V6

    Trim : Black

    Engine : 3.0D V6

    Year : 0000

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    Does anyone know what position the toothed ring attached to the crank is at when at TDC?
    Also if the cams are locked to the sprockets by a location peg etc or just by friction of the main bolt?

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    Vehicle : Vectra C Hatchback Facelift

    Trim : Club

    Engine : Z18XE

    Year : 2005

    Mileage : 100085

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    Quote Originally Posted by Ste View Post
    Does anyone know what position the toothed ring attached to the crank is at when at TDC?
    Also if the cams are locked to the sprockets by a location peg etc or just by friction of the main bolt?
    Hi Ste..not sure how much further you've got with this query, but Haynes manual picture 8.8 on page 2A*6 has associated text " Ensure the camshaft sprocket cut-out (arrowed) is correctly engaged with the locating pin" which may answer one of your queries.....

    While a second picture reference 8.13 on page 2A*7 has associated text "Refit the crankshaft sprocket (toothed ring??) with the locating flange & pulley locating lug outermost"... cheers

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    Quote Originally Posted by Ste View Post
    Does anyone know what position the toothed ring attached to the crank is at when at TDC?
    Also if the cams are locked to the sprockets by a location peg etc or just by friction of the main bolt?
    When the engine is timed correctly to TDC on 1, the reluctor ring flat spot (or missing tooth) is in the 11 O'clock position. Took a few pictures on the phone, off to find the data transfer cable now...

    Cam pulleys can only be fitted one way. Have a look at the centre fittings in this ebay listing - http://cgi.ebay.co.uk/Vauxhall-Astra...item2c52d37e6a

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    Hi Ste,

    Here you go - belt on and timed correctly.

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