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Need help with TIMING.

Discussion in 'Early CJ5 and CJ6 Tech' started by Nightstr, Apr 28, 2013.

  1. Apr 28, 2013
    Nightstr

    Nightstr Member

    Sacramento CA.
    Joined:
    Mar 16, 2012
    Messages:
    253
    I am trying to figure out where to set the timing on my dauntless 225. I bought a timing gun and I have it set right where the red mark is on the pic below. It seams to have a better start but it is running in high idle it seems like and it smells a lot diffrent than when I had it at about 5 degrees on the ruler marks(not sure what you call that little timing ruler). Would it hurt if I run it like that or where should I be set at? Thanks in advance.

    [​IMG]
     
  2. Apr 28, 2013
    Middlefork Miner

    Middlefork Miner Member

    N. Highlands Ca
    Joined:
    Apr 1, 2013
    Messages:
    187
    5 degree before is what my Chilton manual says...point dwell at 30 & point gap at .016
     
  3. Apr 28, 2013
    JAlves

    JAlves Sponsor

    Yuba City, CA
    Joined:
    Oct 8, 2009
    Messages:
    85
    If it runs well there, leave it. Unless you use a piston stop to determine the timing mark and indicator are matched and accurate you are guessing anyway. Set the dwell (I personally do not like setting by gap) and adjust the idle speed. If you change the timing, reset the idle. Now if you have an other than stock distributor, the discussion gets more involved.
     
  4. Apr 28, 2013
    djbutler

    djbutler Sponsor

    Rio Linda CA
    Joined:
    Nov 5, 2007
    Messages:
    722
    Felipe,
    Looking at your picture, you are setting the timing about 5° retarded, that is, after TDC. These engines turn clockwise from the front perspective, so the numbers on the timing indicator above the 0° are all advance numbers, before TDC.

    Try it set to 0°, drive it and listen for ignition pinging on acceleration. If not, set it to 5° BTDC and listen for pinging then. If you reach a point where it pings noticably on acceleration, back it down a couple degrees until the ping goes away and run it there.

    I think the reason JAlves said what he did about the accuracy of the timing mark is because an old harmonic balancer can sometimes slip the weight after the rubber isolator ring deteriorates. When this happens the timing indicator line will be off.

    With your Pertronix ignition module you can ignore the advice about the gap and dwell. Just reset the idle after you are satified with the timing.

    Don
     
  5. Apr 28, 2013
    Nightstr

    Nightstr Member

    Sacramento CA.
    Joined:
    Mar 16, 2012
    Messages:
    253
    I had the timing set at 5° BTDC before and I would get a lot of back fire, it sounded like the engine wanted to die and would take a bit to start even after spark plug change and the pretronix. Once I set it to where it is at I got a better start, not much backfire but it sounds like it idles really high.

    I will defiantly try to do it your way and see what happens.
     
  6. Apr 29, 2013
    cookieman

    cookieman Member

    Colton,Calif
    Joined:
    Jan 31, 2005
    Messages:
    302
    did you disconnect your vacuum line to the disturber
     
  7. Apr 29, 2013
    Nightstr

    Nightstr Member

    Sacramento CA.
    Joined:
    Mar 16, 2012
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    253
    Not sure wich is the vacuum line. Is this the vacuum line?

    [​IMG]
     
  8. Apr 29, 2013
    djbutler

    djbutler Sponsor

    Rio Linda CA
    Joined:
    Nov 5, 2007
    Messages:
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    Yes that is the vacuum line to remove. This disables vacuum advance so you can set static timing. If you have been trying to set the timing with this still connected, no wonder you have problems. Try this, disconnect the vacuum line then set it to 5° BTDC. See how it runs. If you still get the backfiring or pinging, retard it a couple degrees at a time until you get the setting that gives the best power without pinging or hard starting, then run it there.

    Don
     
  9. Apr 29, 2013
    AKCJ

    AKCJ Active Member

    Fairbanks, Alaska
    Joined:
    Aug 12, 2003
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    1,022
    yep
     
  10. Apr 29, 2013
    AKCJ

    AKCJ Active Member

    Fairbanks, Alaska
    Joined:
    Aug 12, 2003
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    1,022
    Don't forget to plug the vacuum hose after you remove it from the distributer.
     
  11. Apr 29, 2013
    djbutler

    djbutler Sponsor

    Rio Linda CA
    Joined:
    Nov 5, 2007
    Messages:
    722
    Good call, that little vacuum leak will affect how the engine runs.
    Felipe, disconnecting the vacuum line is only a temporary thing, just as long as you have the timing light on it. Notice when you put the vacuum line back on how much the timing strobe will move.

    Don
     
  12. Apr 29, 2013
    Posimoto

    Posimoto Hopeless JEEP Addict

    Minden, Nevada
    Joined:
    Aug 7, 2003
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    4,486
    I use a golf tee, but a screw will work also.
     
  13. Apr 29, 2013
    oddfirejeeper

    oddfirejeeper Active Member

    Hamilton, MI
    Joined:
    May 5, 2004
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    1,241
    golf tees work the best. as a matter of fact there are still some on mine almost 10 years later. not on the dist though.
     
  14. Apr 29, 2013
    oddfirejeeper

    oddfirejeeper Active Member

    Hamilton, MI
    Joined:
    May 5, 2004
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    1,241
    also too. not sure about the 225 but the 231 can use the front cover from a buick 350 and the marks are different as i found out.
     

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