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Where should the timing be?

Discussion in 'Early CJ5 and CJ6 Tech' started by groomer_guy, May 17, 2008.

  1. May 17, 2008
    groomer_guy

    groomer_guy Member

    Western...
    Joined:
    May 12, 2007
    Messages:
    233
    I checked in the search before posting. Maybe I wasn't doing it right but I could not find the right one. Anyway....what should my timing be for a 231 OF with an HEI? I borrowed a light from a guy at work and when I checked it it was a good 1.5" past the marks closer to the left front tire. So I turned the distributor and started it again. Nope not good. Turned it the other way and it got a bit better sounding and the mark got closer to the marks. Turned it a bit more and it sounded smoother and the mark was in the marks. Tightened the nut for the distributor and took her for a spin. All I can say is ....WOW! now I have throtle response and power. Any help would be helpfull. I am keeping the time where it is for now until I get some more time to fiddle.
     
  2. May 17, 2008
    jayhawkclint

    jayhawkclint ΜΟΛΩΝ ΛΑΒΕ

    Oklahoma City, USA
    Joined:
    May 18, 2006
    Messages:
    2,622
    Depends on what you're running for vac advance. Really, I shouldn't speak out my arse because I tuned the 225 not 231, but I found that it was best in my case just to tune for total advance to make sure you're not getting detonation, then nudge the idle up for vacuum at the low end. Had to have a mechanic type help me out with one of the fancy SnapOn timing lights. Werks gud. :twisted: YMMV. HTH.
     
    Last edited: May 17, 2008
  3. May 18, 2008
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
    Messages:
    9,221
    5* BTDC then 35* total advance IIRC.

    I'm not aware of any reason an OF 231 should be different than a 225.
     
  4. May 19, 2008
    groomer_guy

    groomer_guy Member

    Western...
    Joined:
    May 12, 2007
    Messages:
    233
    Thank you for the info guys. :) I thought it was around 5* but I wasn't sure. I am about 2* BTDC right now. Runs lot better. I will tweak it a bit more when I get a chance. Thanks again guys. :stout::beer:
     
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