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05-16-2008, 07:07 PM   #4 (permalink)
2ton
 
Join Date: Jan 2007
Posts: 126
Re: Question for mavman and others

That's a pretty good 60'. Every engine wants something different for timing. I try to set it up with the smallest amount of total advance before ET suffers. In other words if I start at 38 and there is no change in ET at 31, but ET goes backwards at 30, I run 31. The only exception to this for me is N2O engines. On cars that spray I usually take 1 to 2 degrees more away, so an engine that runs best at 31 NA, I will set at 29 or 30 for spray. I'm not sure why, but this seems to help consistency for the couple of N2O motors I play with. Remember, changes in fuel octane and carb tuning will also effect how much timing the engine needs. I usually work carb issues out first, then I play with timing. I also try to make only one change and then put a few laps on a car with only that change. That way you can tell if the change is effective for a variety of different conditions. If it's effective across the board you are going in the right direction.

Good luck
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