What's Wrong With a Little Pinging?
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Staging Lane
Joined: Jul 2002
Posts: 77
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From: LI, NY
What's Wrong With a Little Pinging? My engine tweaking experience comes from the days when engines were sized in cubic inches, had carbs, and you tweaked the timing curve with springs and weights inside the distributor and by varying point gap. Air/fuel ratios were done with jets. Back then, an engine was considered to be at optimum tune when there was slight and transient pinging at WOT.
Is this a bad thing in today's performance metric engines run by a computer?
Is this a bad thing in today's performance metric engines run by a computer?
Re: What's Wrong With a Little Pinging? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by arcom:
<strong> My engine tweaking experience comes from the days when engines were sized in cubic inches, had carbs, and you tweaked the timing curve with springs and weights inside the distributor and by varying point gap. Air/fuel ratios were done with jets. Back then, an engine was considered to be at optimum tune when there was slight and transient pinging at WOT.
Is this a bad thing in today's performance metric engines run by a computer? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I too mess with the ole carbed cars But I love the fuel injected one's too. A couple of things are same in both worlds, detonation is not good for the motor, & motors make the most power on the edge of detonation. Thats what I've always fought with to get the most out of a combo. Not enough timing coulda had more, too much timing & detonation & loss of power. With a pcm you can run that ragged edge just that much closer! <img border="0" alt="[evil]" title="" src="graemlins/gr_devil.gif" />
<strong> My engine tweaking experience comes from the days when engines were sized in cubic inches, had carbs, and you tweaked the timing curve with springs and weights inside the distributor and by varying point gap. Air/fuel ratios were done with jets. Back then, an engine was considered to be at optimum tune when there was slight and transient pinging at WOT.
Is this a bad thing in today's performance metric engines run by a computer? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I too mess with the ole carbed cars But I love the fuel injected one's too. A couple of things are same in both worlds, detonation is not good for the motor, & motors make the most power on the edge of detonation. Thats what I've always fought with to get the most out of a combo. Not enough timing coulda had more, too much timing & detonation & loss of power. With a pcm you can run that ragged edge just that much closer! <img border="0" alt="[evil]" title="" src="graemlins/gr_devil.gif" />
