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Urgent help with ly7 vz timing chains from mace!!!!

Discussion in 'Mace Engineering' started by Callum433, Jan 26, 2019.

  1. Callum433

    Callum433 Member

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    Hey guys, having an issue wilst installing the new timing chains. Have already timed the left bank and main chain after replacing the oil pump. Went to time the second bank after rotating to the second stage marks and it won't line up???? I've paid a lot of money and this is stressing me out. The cam gears with the lock in place are like 20° retarded from the pictures and the intermediate gear hole is like 15-20° advanced? Heeeeellllpppp!!!!!
     
    Last edited: Jan 26, 2019
  2. EYY

    EYY Well-Known Member

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    They won’t line up after you’ve rotated the engine - but that doesn’t mean the timings wrong, just that the chain won’t fall in the same place on the sprockets every revolution.

    Just take your time and follow your manual.
     
  3. Callum433

    Callum433 Member

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    Have followed everything it says I'm just very aware that these are an interference motor and really don't wanna f**K it up. Your sure that it won't be an issue putting it together not on the timing marks?
     
  4. MACE

    MACE Well-Known Member

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    Hi Callum433,

    I am sorry for the delay in getting back to you. Is it sorted, if not, can I have your contact number and best time to call so I can assist better over the phone?

    Best Regards,
    Jason
     
  5. Callum433

    Callum433 Member

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    Hey Jason no it's not yet sorted but I'd happy to chat after work. Mob is 0478821927 I finish at 4:30 Sa time
     
  6. VZ SV6 REBUILD

    VZ SV6 REBUILD Member

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    Do yourself a favour, remove the chains and start again just to be on the safe side. If the timing is wrong the result is bent valves. A hell of a lot more work involved if that happens, and cost.
     
  7. Callum433

    Callum433 Member

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    Yeah I know that belt valves is a possibility but even if it's not the ecu and BCM are very close to going pop as it is so wouldn't really be of use for the amount of work to start again. Plus without having everything in the right position or a way to get it there I can't see it fixing the problem
     
  8. VZ SV6 REBUILD

    VZ SV6 REBUILD Member

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    If you remove the chains the motor can be turned without damage, allowing you to start again. Once the motor has been turned (with chains on) the timing mark's will almost never line up again.
     
  9. Callum433

    Callum433 Member

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    What position do I need to out the cams in before removing the chains? I feel like the more I move the more damage I'm going to do.
     
  10. VZ SV6 REBUILD

    VZ SV6 REBUILD Member

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    For removal the flats on the rear of the camshafts should be parellel to the cylinder head (facing upwards) and the crankshaft timing mark should line up with the oil pump timing mark on the left. You may need to rotate the crankshaft 1 full turn
     
  11. VZ SV6 REBUILD

    VZ SV6 REBUILD Member

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    You should feel it if a piston is hitting a valve
     
  12. Callum433

    Callum433 Member

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    Both flats facing up at the second timing mark? How does that work when timing it says to have them at different positions? Plus one of the cam locks puts the face at an angle? I wish I new a really good guide that just explained everything
     
  13. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    Have you actually spoken with the parts supplier? In my experience, MACE are always rather helpful.
     
    commodore665 likes this.
  14. Callum433

    Callum433 Member

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    I haven't yet. I went through there instructions to do the timing chains as I thought it's best given I have their chains. But given the cercumcircums I feel there is a lot more to it than the instruction pdf. Because I followed it to the letter and still managed to possibly kill my engine.
     
  15. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    Well I suggest they be your first port of call.
     
  16. Callum433

    Callum433 Member

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    I'll give them a call today and see what they can make of it. Hopefully at least someone can tell me what I did wrong or even how to fix it.
     
  17. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    You may have to start from the beginning.

    Turning the engine over by hand won't hurt anything unless you force it should something hit. With the spark plugs removed the engine should turn over relatively easy so you will definitely know if something isn't right.
     
  18. VZ SV6 REBUILD

    VZ SV6 REBUILD Member

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  19. VZ SV6 REBUILD

    VZ SV6 REBUILD Member

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    Callum, post your email address and I'll send you the directions copied from my workshop manual
     
    Last edited: Feb 5, 2019
  20. Callum433

    Callum433 Member

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    Basically the picture above is what I was told to use on the left bank (passenger side) and the angle one on the drivers side. Left bank and main all lined up perfectly but the drivers bank is now the issue. Not sure how to tell if my motor is cooked tbh.
     

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