Engine timing,

Discussion in '8-valve' started by mk2 nas, Aug 6, 2017.

  1. mk2 nas Paid Member Paid Member

    Joined:
    Jul 30, 2013
    Likes Received:
    96
    Location:
    Northamptonshire
    Hi,what could cause timing to move a bit after setting it.ive set mine at"0" degrees ran it
    For approx 300-400 miles and it seems to have retarded itself a 2 or 3 degrees.so I reset it
    And it may do it again.clamp is tight!!! :thumbup:
     
  2. notenoughtime

    notenoughtime Moderator Moderator

    Joined:
    Jan 21, 2014
    Likes Received:
    511
    Location:
    Essex
    Why did you set it at 0deg to start with?
     
  3. mk2 nas Paid Member Paid Member

    Joined:
    Jul 30, 2013
    Likes Received:
    96
    Location:
    Northamptonshire
    That's what I've been advised is right for a 1600eg k jet with advance and retard.
    Ive heard that a setting before TDC is not right.

    Sorry looking at my first post I meant the diamond marker not a "0"marker
    But zero degrees is what I meant.

    It's set with diamond marker on flywheel at centre of inspection hole at 900ish rpm.
     
    Last edited: Aug 6, 2017
  4. Tristan

    Tristan Paid Member Paid Member

    Joined:
    Apr 25, 2006
    Likes Received:
    1,205
    Location:
    Southern IRELAND
    A loose clamp on the dizzy, loose timing belt, wear on the dizzy shaft or gears....or a dodgy timing light.
     
  5. Jon Olds Forum Junkie

    Joined:
    Jan 28, 2004
    Likes Received:
    535
    Location:
    United Kingdom
    Just set my EG race engine using a snap on digital timing light. My engine needs a lot of advance for max power, meaning a non standard 8 degrees at tickover.
    What I noticed while playing with different dizzies is potential wear in the dizzy drive cog.
    Think the early engines were a bit poor in the oil lube supply in this area, hence the wear.
    Later engines do not appear to have this problem, from my box of 30 used dizzies..
    Something to have a look at, maybe
    Jon
     
    mk2 nas likes this.
  6. rubjonny

    rubjonny Administrator Staff Member Admin

    Joined:
    Oct 31, 2003
    Likes Received:
    3,298
    Location:
    Bracknell
    yes this is correct for the 1.6, maybe check if the intermediate shaft sprocket woodruff key is still there and bolt tight
     
    mk2 nas likes this.
  7. mk2 nas Paid Member Paid Member

    Joined:
    Jul 30, 2013
    Likes Received:
    96
    Location:
    Northamptonshire
    So,rj & j olds "0" degrees is correct? I'm using premium fuel?
    Will check sprocket & woodruff.
     
    Last edited: Aug 9, 2017
  8. Toyotec

    Toyotec CGTI Committee - Happy helper at large Admin

    Joined:
    Jul 26, 2006
    Likes Received:
    3,320
    Location:
    Creating Pfredstarke
    ^^it is the manufacture basic setting to operate at intended marketed power, when used with generic fuel.
    In practice, for best enthusiasts torque and power it needs to way more advanced that what you read.
     
  9. MUSHY 16V

    MUSHY 16V Moderator Staff Member Moderator

    Joined:
    Jan 26, 2008
    Likes Received:
    800
    Location:
    aberdeen
    Aye I noticed that with both my 1.6 GTI and 16v both were flat when set to standard timing both ran better with 5 to 6 degrees more advanced
     
    mk2 nas likes this.
  10. Toyotec

    Toyotec CGTI Committee - Happy helper at large Admin

    Joined:
    Jul 26, 2006
    Likes Received:
    3,320
    Location:
    Creating Pfredstarke
    Because when these things were written by VW and later repeated by external publications, that is the recommendation that would have been given to a service technician for less come back if there was a problem later on.
    Those generic settings are not what tuners or budding hands on enthusiasts ever used.
     
    mk2 nas likes this.
  11. mk2 nas Paid Member Paid Member

    Joined:
    Jul 30, 2013
    Likes Received:
    96
    Location:
    Northamptonshire
    Ok that's cleared that one up,everything is in place and normal so I suspect maybe a slight wear/fault with dizzy
    I've seen recon dizzys I think on classic vw or somewhere like that.
     
  12. Jon Olds Forum Junkie

    Joined:
    Jan 28, 2004
    Likes Received:
    535
    Location:
    United Kingdom
    Playing with my 1600n race EG today. Next outing Croft Easter Monday: Sprint.
    Robbed the carb bodies off my (crashed..) mk2 45DCOE's
    Exactly similar to what was on there.
    Spanish DCOE 45's
    Swapped chokes and jets over.
    Engine now seems somewhat sweeter, after carb balancing and initial idle adjustments.
    GS6 cam means it scares small animals and children at tickover still. Rattles window panes at 5 yards..
    And its only an iddy bitty 1600
    Jon
     
  13. mk2 nas Paid Member Paid Member

    Joined:
    Jul 30, 2013
    Likes Received:
    96
    Location:
    Northamptonshire
    Sounds great,I like the idea of carbs one day if the k- jet dies.just out of interest where do get an intake manifold made
    To take carbs.:thumbup:
     
  14. Tristan

    Tristan Paid Member Paid Member

    Joined:
    Apr 25, 2006
    Likes Received:
    1,205
    Location:
    Southern IRELAND
    Running much advance, Jon?
     
  15. Jon Olds Forum Junkie

    Joined:
    Jan 28, 2004
    Likes Received:
    535
    Location:
    United Kingdom
    Manifolds are easy to come by, but k-jet is great for a road car. Fast, cheap to run, minimal maintenance.
    The engine spec is full race, fancy head 40:35, GS6 cam, 12.5:1 etc so it likes about 35 degrees at high revs
    Out in it on easter monday Croft sprint
    Jon
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice