trying to get car setup... put timming one night at 41 and car goes faster then next night put it at 41 and get knock all the time and put timming a 38 and get better times... what is the best way to set timming ie the bigger the # the better or is it the opp.... i have been trying to get timming down so i can set the fuel or am i going back wards some help here i have autotap logs and edit files for anyone who can help.... thanx

 

Getting the correct timing is hit or miss. Too far will cause detonation and knock, too small and you wont' get max power. Generally, you want to increase in small increments until you get knock, then back down to where you didn't get knock. This is usually only a couple of degrees across the board.

most people find the biggest power gains in leaning it out a beat using the AFR tables.

Jonota

 

are you talking about the pe table for fuel.... i have about 950+ mv on o2.... how can i tell real knock and faulse.... cuz on night it ran 41 deg and no knock now i have it..

 

There are many factors that affect detonation one of which is intake air temperature. You might have ran very close to detonation but with cooler air temperature at night, you didn't notice any knock. See at what rpm and map its knocking and backup the timing there a couple of degrees.
You can check if its reel knock by rising the fuel octane, if you get the same timing retard with better fuel then its false, if it reduces are disapears then your knock is real.

 

I reccomend getting on a dyno so that you can quatify what timeing does what.

Alot of time LESS timing will work better than too much (before knock still)

 

when i was running the more timming it was warmmer outside and it knocks at an idle which it did not do till it started getting colder outside... what kndia timming do you run in your 393 setup....