After watching the old video, I digged up my videos of the car, just to watch them again, to be honest, I really miss driving this thing And because I found all of my footage, I can show you what a "good" (lets say better..) ignition timing results in. In this video, you can cleary hear, that after reducing the advance ignition in the upper rpm's, it gave me plenty (~500-600rpm) of extra rpm, and horsepower as well.
Here is the video:
http://www.streetfire.net/video/ignition-timing-change_742052.htm
Btw, my ignition isn't ECU controlled
Its quite simply modded, the distributor has a spring/weight mechanism inside, witch gives more advance ignition when you press down the throttle. We limited this mechanism's movement, so now we could give the car much bigger advance at lower rpm's, giving more torque, and still not to much advance in the upper rpm's, giving more rpm, and power of course.
Pics:
The "piece":
http://img260.imageshack.**/img260/9052/gyujt.jpg
In place:
http://img146.imageshack.**/img146/4890/gyujt2.jpg
Explained:
http://img217.imageshack.**/img217/3944/gyujt3.jpg
The piece (red) put's pretension the mechanism (blue), so it can open as much, thus giving less advance ignition. Some people change the spring (yellow), but this is much easier, not to much of experimenting is needed, and you have the stock ignition "map". Changing the spring gives a totaly different ignition "map" (or charasteristic, call it as you want), that can be a PITA to sort out.
It's real "garage tuning"
I am planing to use ford EDIS ignition with a programable ECU, but not nowadays. Untill that, this is just perfect.
Just thought this might be interresting
Extra little onboard at the end, just cos I miss driving
Cheers!