Initial Base Timing
+ Reply to Thread
Results 1 to 10 of 10

Thread:
Initial Base Timing

  1. #1
    Senior Member SBS933's Avatar
    Join Date
    Jun 2012
    Location
    Socialist Republic of California / Parker Az.
    Posts
    975

    Default Initial Base Timing

    Getting ready to put the motor back together, what should i set the base timing at ?

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    Senior Member SBS933's Avatar
    Join Date
    Jun 2012
    Location
    Socialist Republic of California / Parker Az.
    Posts
    975

    Default

    Quote Originally Posted by sbs933 View Post
    getting ready to put the motor back together, what should i set the base timing at ?
    bbc n/a

  4. #3
    Super Moderator HammerDown's Avatar
    Join Date
    Dec 2007
    Location
    The Right Coast/SE-PA
    Posts
    5,488

    Default

    Base timing isn't really all that relevant as long as the engine doesn't buck on its self when started hot.
    You could be anywhere from 10-14 degrees of "base" idle timing > what counts is where the TOTAL timing is and when it's all in.
    example...My total at 2500 rpm and above is 35-degreese, when it idles down it's at 14 and STILL idles and 'hot-cranks' great.
    My engine will give a decent idle at 10 degrees too, below that and it's to chunky/lopey sounding...not clean and crisp.
    Depending what dizzy you're working with will allow for spring and stop bushings that will let you build the required idle, rate of advance and total.
    <img src=http://www.performanceboats.com/gallery/data/500/medium/06-30-11_1234.jpg border=0 alt= />

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Senior Member SBS933's Avatar
    Join Date
    Jun 2012
    Location
    Socialist Republic of California / Parker Az.
    Posts
    975

    Default

    Thanks Hammer, I think 12 will be a good number. I'm gonna go with the old 32 deg. at 2500 and check it at 3000

  7. #5
    Senior Member ICECREAMAN's Avatar
    Join Date
    May 2009
    Posts
    2,426

    Default

    Is your distributor locked out? If so, initial timing is a moot point. Drop the distributor, put enough advance in it to make it start, set your total timing at 2500 and you're done. If your locked out, initial and total timing should be the same thing. If your still running springs, it will still be close.

  8. #6
    Senior Member SBS933's Avatar
    Join Date
    Jun 2012
    Location
    Socialist Republic of California / Parker Az.
    Posts
    975

    Default

    Quote Originally Posted by ICECREAMAN View Post
    Is your distributor locked out? If so, initial timing is a moot point. Drop the distributor, put enough advance in it to make it start, set your total timing at 2500 and you're done. If your locked out, initial and total timing should be the same thing. If your still running springs, it will still be close.
    I'm running springs ICM. Last time i stabbed the dist. i set initial at T.D.C. and was told i should have set it ahead. Thats why i questioned it this time

  9. #7
    Senior Member SBS933's Avatar
    Join Date
    Jun 2012
    Location
    Socialist Republic of California / Parker Az.
    Posts
    975

    Default

    [QUOTE=HammerDown;1712608]Base timing isn't really all that relevant as long as the engine doesn't buck on its self when started hot.
    You could be anywhere from 10-14 degrees of "base" idle timing > what counts is where the TOTAL timing is and when it's all in.
    example...My total at 2500 rpm and above is 35-degreese, when it idles down it's at 14 and STILL idles and 'hot-cranks' great.
    My engine will give a decent idle at 10 degrees too, below that and it's to chunky/lopey sounding...not clean and crisp.
    Depending what dizzy you're working with will allow for spring and stop bushings that will let you build the required idle, rate of advance and total.[/QUOTE Hammer last time iniital timing was set at TDC and yes it was a loppy idle.

  10. #8
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,975

    Default

    Like Icecreaman posted, set the total timing at what ever RPM it tops out at, and don't worry about the intial unless its below 10 degrees, which I doubt it will be if your total is 34-35.



    100% free webcam site! | Awesome chicks and it is absolutely free! | Watch free live sex cam - easy as 1-2-3

  11. #9
    Super Moderator HammerDown's Avatar
    Join Date
    Dec 2007
    Location
    The Right Coast/SE-PA
    Posts
    5,488

    Default

    If I may suggest > don't go higher in total timing than needed.
    Meaning, if the engine doesn't make any more full throttle RPM at 32-35 degrees don't go thinking 38-40 must be better > cause it's not!
    <img src=http://www.performanceboats.com/gallery/data/500/medium/06-30-11_1234.jpg border=0 alt= />

  12. #10
    Senior Member SBS933's Avatar
    Join Date
    Jun 2012
    Location
    Socialist Republic of California / Parker Az.
    Posts
    975

    Default

    Quote Originally Posted by HammerDown View Post
    If I may suggest > don't go higher in total timing than needed.
    Meaning, if the engine doesn't make any more full throttle RPM at 32-35 degrees don't go thinking 38-40 must be better > cause it's not!
    Sounds good, Got it all down now and thanks for all the schooling guys. It's a lot easier when it makes sense.

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in

Tags for this Thread

Digg This Thread

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •  
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95