Ok after much hair pulling trying to remove all trace of knock from all logs, I had found I was going around in circles. No matter what timing was there would always be some logged knock.
After some discussions with fellow tuners the consensus appears to be that as mentioned previously, real knock you should worry about is "saw tooth" in shape, while incidental and false knock is just a small spike which will show now and again. Or in other words "false positives". Just like an anti-spam engine will block good emails on occasion, the knock sensors will log random nothings from time to time. However big spikes and saw tooth shapes suggest real knock so be wary and careful not to take this post as a recommendation to allow real knock to exist at all.
So in summary Im pretty much back at my timing table I ran for the dyno pull happy with the fact that the odd tick on the log now and again is acceptable. With this in mind Im warming up to an OTRCAI purchase to go with the cam and possibly some Dart 205 or 225 heads.
1 comment:
don't beat yourself over it, i spent 2 months and lots of dollars on 100octane to figure out why the knock would not go away. stiff suspension, bumps in a road, loud valvetrain, and million other reasons will cause it. the only knock i worry about is under load and higher rpm.
for logging tho, it helps to NOT lug it at 1600rpm in 6th gear, it's just too easy to set off knock sensors that way. i wish we could filter based on gear ;)
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