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Thread: Vectra C 1.8 Z19XE

  1. #1
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    Default Vectra C 1.8 Z19XE

    Hi

    My wifes 57 plate sri is in at the main dealer having some warranty work done. Included is a rattle/knocking on start up. They reckon this is the cam valves, and they have changed both. Sounds good so far.

    ting that wories me is that I have an Alfa twinspark which has a variator (same thing), and these are well known for sounding like diesels on start up.

    Thing is to fix the Alfa its a cambelt off job i.e. new cambelt. the vaux dealer reckons they changed the valves both inlet & exhaust without disturbing the cambelt. Is this right ?

    Car has done about 38k, had camshaft oil seals changed under warranty (twice as they messed up first time and it leaked oil badly) at 16k, So I know they've been tinkering round these valves before.

    Should it have the belt changed ?

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    Regular Member the-wizard's Avatar
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    Im no expert on the 1.8, only go on information from tis but would dought the valves could be changed without touching the cambelt!!.

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    North Wales - Assistant Regional Organiser
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    I would imagine the head has to be removed to take the valves out so I think Mr. Dealer needs a talking too.

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    Full Member Big Sig's Avatar
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    Good practice is to never refit a cambelt imo.
    Now I need a turbo to keep up!

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    Regular Member DaveW555's Avatar
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    Default

    If they have had the valves out then cont is spot on, its head off so they would have definately removed the cam belt. this variator thing you mention sounds like a vvt rather than the actual valves and if its just the vvt unit they have changed then again they would have removed the cam belt. Find out exactly whats been changed and I'll be more than happy to tell you whats involved and whats been removed/refitted and if anything should have been replaced while they were at it.

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    Think I may need to clarify. These are the valves hat operate the variable valve timing, not inlet/exhaust valves, so don't see why the head should need lifting.

    If this works like an Alfa twinspark the valve uses oil pressure to adjust the valve timing,in the case of the vaux engine on both inlet and exhaust cams.

    The mechanical part that adjusts the timing sits on the end of the camshaft, hence to replace this part in an Alfa you have to take the cam out, and remove the variator from the end of it. So the cambelt needs to be removed.

    What I'm trying to establish here is if the belt has to be removed if the VVT valves are replaced in the vaux engine, not the inlet/exhaust valves.

    Many thanks

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    Regular Member DaveW555's Avatar
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    As far as I'm aware its the cam pulleys that get changed so the belt has to come out but the cams dont, its just a matter of locking the cams up and undoing the bolt in the end of the pulley. Hope this helps.

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    Hi Dave555, sorry bit groggy had toothache for the last few days, and had the wisdom tooth pulled this morning. Went to collect the wife's car and it is a different set up to the Alfa.

    The Veccy has what appear to be two valves on the cambelt side of the head, one sticking out towards the back and one to the front. Both have been replaced, and I can see how this could be done without touching the cambelt.

    I trust the particular mechanic who did the work, he also reckoned the filters for the valves broke up, so they got replaced as well. He said the VVT valves are a common problem, usually starts with a rattle or clatter on start up. Anyway hopefully all done, thanks for the help guys.

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