i hear you,im going to do a few rips down the track soon and i wanted to get all i can out of it.....some people say to up the timing until the top speeds stops increasing?...car run great, i just want to get all i can out of it while im there...and my car is loud so listening for pre detonation will be hard...just curious what you veterans do...mine is 10.1:1I generally run about 12-deg on 91 octane with about a 10.5:1 compression ratio. I've gotten away with more timing, with higher octane fuels, but I don't like the way the car drives with too much ignition timing. Great if you're romping on it all of the time, but it gets really jerky under cruise and light throttle, low RPM driving when too far advanced.
Easiest way to detect detonation by ear is to find a bit of a stretch and crawl along in 3rd or 4th gear at as low an RPM as your car can tolerate. Once you're there, roll into the throttle quickly and listen. You shouldn't have any trouble distinguishing it....it's pretty apparent.i hear you,im going to do a few rips down the track soon and i wanted to get all i can out of it.....some people say to up the timing until the top speeds stops increasing?...car run great, i just want to get all i can out of it while im there...and my car is loud so listening for pre detonation will be hard...just curious what you veterans do...mine is 10.1:1
ok thanks for the tip,i was kinda doing the same thing on a hill,but not from low rpm,didnt hear nothing,i will try that also thanks.Easiest way to detect detonation by ear is to find a bit of a stretch and crawl along in 3rd or 4th gear at as low an RPM as your car can tolerate. Once you're there, roll into the throttle quickly and listen. You shouldn't have any trouble distinguishing it....it's pretty apparent.
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