Timing Belt Help

Discussion in 'Technical' started by Kaleb, Aug 28, 2012.

  1. Kaleb

    Kaleb Member

    Trying to put the timing belt on my vg30 and don't have a crank mark, how can i find the tdc to align it up

    [​IMG]

    cheers
     
  2. Chrispy

    Chrispy Pretentious Upstart

    Need to remove the crank pulley, lower cam belt cover and there is a mark on the oil pump and lower sprocket.
     
  3. AndyMac

    AndyMac Better than you

    like a little hole punch mark on the sprocket...or mine was anyway
     
  4. ggb

    ggb Member

    Black Dot

    Mine was a black dot on the Timing Belt pulley.

    Another way to finding TDC is to ;
    1. Take the Cam covers off the drivers side of the engine (Exhaust and Intake)
    2. make sure spark plugs are out of all cylinders.
    3. insert a long thin stick such as a chopstick in cylinder 1 (make sure its long enough to stick right out the top of the engine (i would say 40cm+))
    4. turn the engine over by hand using a long breaker bar and socket.
    5. watch the movement of the stick as it moves up and down. Just after the stick reaches the highest point and before it goes down you have TDC on #1.
    6. then align the marking on the oil pump case with that of the sprocket (you should see a small notch on the side of the oil pump - located at around 3:30 mark)

    Assuming here that the timing belt is off spin the cams a little so that they are not engaged they should move backwards and forwards about 10 degrees left and right freely. (i.e. not pushing down on the lifters) so that when you turn the engine the pistons don't hit on the valves..

    Another way;
    If you have not removed the timing belt (look like you have on the picture) -
    Line all the dots up on the cam gears with that of the backing plate and applying the same principle as that in point 6 you should see the marking on the crank pulley align with that on the oil pump...
     
  5. Chrispy

    Chrispy Pretentious Upstart

    That's not accurate enough for my liking. Unless you use a positive stop and a degree wheel. Just do it properly and pull all the crap of the front of the motor. It's not hard.
     
  6. ggb

    ggb Member

    what crispy said - ;)

    It is easier... but looking at the pictures- with out the timing belt there I am assuming he has already pulled the harmonic balancer off.
     
  7. ggb

    ggb Member

    whoops - didn't look properly... You still have the Harmonic Balancer on ???
     
  8. Kaleb

    Kaleb Member

    i can't pull the crank pulley out

    has anyone got a photo of the cams when the #1 piston is tdc?
     
  9. Kaleb

    Kaleb Member

    Hmm can't edit original post, can only turn the harmonic balancer / crank shaft 180 degrees and then it hits something
     
  10. Chrispy

    Chrispy Pretentious Upstart

    Go and buy a bolt harmonic balancer puller from supercrap. Will be $30 and you will use it a lot if you own a zed :p Do it properly.

    Cams at #1TDC will show you nothing. The exact location of the cam will change from engine to engine depending on the deck of the block and heads.
     
  11. Chrispy

    Chrispy Pretentious Upstart

    It will be hitting the valves. Don't try and force it, you will bend them.
     
  12. z-alot

    z-alot Member

    Ouch! Im not liking the sound of this..

    Why not setup a BBQ & Coldies for the weekend and have a mini tech day.. Would be safer to have expert advice onsite.
     
  13. AndyMac

    AndyMac Better than you

    I'm with Chrispy, get all the gear off the front, line up the dots, wack on the belt and away you go.

    disclaimer: There are some extra bits to do in there...I may have over simplified it
     
  14. mholt

    mholt Member

    shouldnt you be changing the water pump while you are at it
     
  15. Tektrader

    Tektrader Z32 Hoe, service me baby

    2 ways to work on a VG30. The Right Way or NO WAY..........

    Havent got the tools, knowledge or the time? Dont even start to do it.
     
  16. Martin Williams

    Martin Williams Well-Known Member

    Where are you in Queensland, sounds like you need some help. pm me
     
  17. misszen

    misszen Red ones go faster!

    Maybe its too late ?

    He might have tried to force it already.

    If you have forced it and the valve is bent (not that hard to bend one really) if so it coud make it all a waste of time - ideally you need to do a compression test as soon as the belt goes on properly to make sure it is ok still or you might spend a lot of time diagnosing other things and chasing your tail

    as others have said - stop and wait till you can do it properly with the right tools or wait for some help
     

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