Stan Galat posted:I want to know more about the retard @DannyP. Without a dyno, I'm just guessing (and trying to feel it: was that faster?) out here in flyover country.
No dyno info Stan, sorry. The motor did seem more eager to rev when I did that change. Originally I had an 009, and then switched to the Megajolt crankfire. Initially I had duplicated the 009 curve, and went from there with idle advance changes, added a load curve via throttle position sensor, and the retard above 4800.
A few years later I added a temp sender tied into a global advance adjustment that bumped timing when cold, at low load low rpm only to help with idle. Love the features of the Megajolt software.
All the changes made a smoother, more eager response. That's all I've got.
Al may be sniffing too much paint, I don't know. I agree with Stan and Ed, Panchitos on any motor less than 2.0 liters is a very good thing. Above 2.0 liters I'd get something bigger, IMHO they've got too small valves. Pay very careful attention to deck height, dynamic compression, and chamber size to arrive at the correct CR for max power. Tighter deck height engines can actually run cooler than large deck height low compression motors. Don't leave any performance on the table, as a cooler engine will last longer......