You're both confused. Bill had it right the first time, Martin misunderstood, and Bill misunderstood Martin's misunderstanding. Advanced is 10 degrees according to Bill, which is where the detonation was happening. Retarding to 13 made it go away. So you eliminate pinging by retarding. Charge temperture also has a factor, as does the shape of the piston/cylinder. Jim On Tue, 21 Oct 2003 03:54:04 -0000 "content22207" <brobertson@xxxxxxxxxxxx> writes: > Yep -- that's how you do it. Pre-ignition caused by mixture exploding > before a spark hits it. Can eliminate by reducing volatility of > mixture (higher octane), lowering chamber temp (cooler plugs) or > moving spark farther from TDC. Unfortunately last method also cuts > down on power. > > Bill Robertson > #5939 > > >--- In DMCForum@xxxxxxxxxxxxxxx, Martin Gutkowski <webmaster@xxxx> > wrote: > > Let me get this strait - you were trying to elminiate pinking by > > advancing????? > > > > content22207 wrote: > > > > >Have timed the ever living mess out of my engine. Back to 10, > then > > >start predetonating. Up to 13 and lose power. > > > > > > ------------------------ Yahoo! Groups Sponsor > > To unsubscribe from this group, send an email to: > DMCForum-unsubscribe@xxxxxxxxxxxxxxx > > > > Your use of Yahoo! Groups is subject to > http://docs.yahoo.com/info/terms/ > > > ________________________________________________________________ The best thing to hit the internet in years - Juno SpeedBand! Surf the web up to FIVE TIMES FASTER! Only $14.95/ month - visit www.juno.com to sign up today! ------------------------ Yahoo! Groups Sponsor ---------------------~--> Yahoo! Autos. Everything you need to know about buying or selling a car. FREE Quotes, 360° Tours, Research, Blue Book, Compare Vehicles, Buy Used http://us.click.yahoo.com/kEZsdA/bwnGAA/YiGOAA/HliolB/TM ---------------------------------------------------------------------~-> To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
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