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Timing, Was: SU performance tuning... 1800

posted by Phil S. on Mon Feb 28 10:32 CST 2005
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last visit: Fri Oct 24 13:18 CST 2014

[RELATED]

Gary,

Dyno is the quickest way to do it right. Or G-Tech, or even a stopwatch... but you need some sort of controlled way of experimenting -- seat of the pants is just too deceptive.

Point is, the old "advance until it pings and then back off slightly" method may or may not pertain to any particular motor. Some motors make the best power right on the edge of detonation, but it's by no means a truism.

You need the burn to complete as the piston reaches about 10 degrees ATDC. If it completes at 5 ATDC, you make less power and get worse economy, and it may or may not ping in the process. It all depends what the burn rate is, and that varies greatly with all sorts of factors.

Not a very helpful answer, sorry...

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SU performance tuning... [1800]
posted by KLR142 on Mon Feb 28 09:19 CST 2005 >

SU performance tuning... [1800]
posted by Phil S. on Mon Feb 28 09:44 CST 2005 > V
- Timing, Was: SU performance tuning... [1800]
  posted by garyetie on Mon Feb 28 10:08 CST 2005 > V
  - Timing, Was: SU performance tuning... [1800]
    posted by Phil S. on Mon Feb 28 10:32 CST 2005 > V
    - Timing, Was: SU performance tuning... [1800]
      posted by Bennie on Mon Feb 28 21:28 CST 2005 > V
      - Timing, Was: SU performance tuning... [1800]
        posted by Phil S. on Tue Mar 1 05:54 CST 2005 > V
  - Timing, Was: SU performance tuning... [1800]
    posted by JohnMc on Mon Feb 28 10:34 CST 2005 > V
- SU performance tuning... [1800]
  posted by KLR142 on Mon Feb 28 12:46 CST 2005 > V
  - SU performance tuning... [1800]
    posted by Phil S. on Mon Feb 28 13:32 CST 2005 > V
    - SU performance tuning... [1800]
      posted by KLR142 on Mon Feb 28 13:57 CST 2005 > V

SU performance tuning... [1800]
posted by jparker3 on Mon Feb 28 15:47 CST 2005 > V
- SU performance tuning... [1800]
  posted by KLR142 on Mon Feb 28 16:30 CST 2005 > V
  - SU performance tuning... [1800]
    posted by jparker3 on Tue Mar 1 01:57 CST 2005 > V
    - SU performance tuning... [1800]
      posted by KLR142 on Thu Mar 3 00:31 CST 2005 > V
  - SU performance tuning... [1800]
    posted by Phil S. on Tue Mar 1 05:39 CST 2005 > V
- SU performance tuning... [1800]
  posted by Bennie on Mon Feb 28 21:34 CST 2005 > V
  - SU performance tuning... [1800]
    posted by jparker3 on Tue Mar 1 01:43 CST 2005 > V
  - SU performance tuning... [1800]
    posted by Phil S. on Tue Mar 1 05:46 CST 2005 > V
    - SU performance tuning... [1800]
      posted by Bennie on Tue Mar 1 06:07 CST 2005 > V
      - SU performance tuning... [1800]
        posted by someone claiming to be Rhys on Fri Mar 4 19:01 CST 2005 > V

SU performance tuning... [1800]
posted by CyaLater on Mon Feb 28 19:22 CST 2005 > V
- SU performance tuning... [1800]
  posted by jparker3 on Tue Mar 1 03:49 CST 2005 > V
  - SU performance tuning... [1800]
    posted by CyaLater on Sat Mar 5 14:01 CST 2005 > V
- SU performance tuning... [1800]
  posted by KLR142 on Thu Mar 3 00:35 CST 2005 > V
  - SU performance tuning... [1800]
    posted by CyaLater on Sat Mar 5 13:43 CST 2005 > V
    - SU performance tuning... [1800]
      posted by KLR142 on Sat Mar 5 14:23 CST 2005 > V
      - SU performance tuning... [1800]
        posted by CyaLater on Sat Mar 5 18:57 CST 2005 > V
        
        SU performance tuning... [1800]
        posted by KLR142 on Sat Mar 5 20:08 CST 2005 > V
        
        SU performance tuning... [1800]
        posted by CyaLater on Sat Mar 5 22:27 CST 2005 > V
        
        SU performance tuning... [1800]
        posted by KLR142 on Sun Mar 6 08:54 CST 2005 > V
        
        SU performance tuning... [1800]
        posted by Phil S. on Sun Mar 6 09:32 CST 2005 > V
        
        SU performance tuning... [1800]
        posted by JohnMc on Sun Mar 6 09:43 CST 2005 > V
        
        Vacuum [1800]
        posted by Phil S. on Sun Mar 6 10:16 CST 2005 > V
        
        SU performance tuning... [1800]
        posted by KLR142 on Sun Mar 6 12:32 CST 2005 > V
        
        SU performance tuning... [1800]
        posted by Phil S. on Sun Mar 6 12:41 CST 2005 > V
        
        good deal =D thanks again! (NT) [1800]
        posted by KLR142 on Sun Mar 6 13:12 CST 2005 > V
        
        good deal =D thanks again! (NT) [1800]
        posted by jparker3 on Mon Mar 7 10:52 CST 2005 > V
        
        good deal =D thanks again! [1800]
        posted by KLR142 on Mon Mar 7 21:34 CST 2005 > V
        
        good deal =D thanks again! [1800]
        posted by jparker3 on Thu Mar 10 03:50 CST 2005 > V
        
        good deal =D thanks again! [1800]
        posted by KLR142 on Thu Mar 10 08:50 CST 2005 > V
        
        good deal =D thanks again! [1800]
        posted by JohnMc on Thu Mar 10 09:13 CST 2005 > V
        
        There is nothing hooked up to my dizzy, no vacuum nothing =D (NT) [1800]
        posted by KLR142 on Thu Mar 10 09:23 CST 2005 > V
        
        SU performance tuning... [1800]
        posted by CyaLater on Mon Mar 7 19:00 CST 2005 > V

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Timing, Was: SU performance tuning... 1800