Spark plug gaps after 15K miles
11-13-2008, 02:38 PM
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Spark plug gaps after 15K miles I am measuring my spark plug gaps as I pull the plugs (was just curious), they were all supposed to be gapped at .38. I know over time the gap increases as the electrode wears, but my plugs ranged from .38 to .46 and everything in between. Were the plugs not gapped correctly or do they wear that unevenly?
11-13-2008, 04:47 PM
#2
Electrode wear????
Even if they did, the amount of wear could only be measured by engineers at NASA with a $10 million laser gaschromatigraph measuring device.
Gaps don't change. I've been changing my pulgs for 20 years on my cars, never once have the gaps changed from spark plug change to spark plug change...NOT ONE TINY BIT. And the electrodes are in the same exact condition as when they were new, just a different color. I did have an engine once that had coolant getting into the cylinders and that did corrode a few plugs pretty bad.
Even if they did, the amount of wear could only be measured by engineers at NASA with a $10 million laser gaschromatigraph measuring device.
Gaps don't change. I've been changing my pulgs for 20 years on my cars, never once have the gaps changed from spark plug change to spark plug change...NOT ONE TINY BIT. And the electrodes are in the same exact condition as when they were new, just a different color. I did have an engine once that had coolant getting into the cylinders and that did corrode a few plugs pretty bad.
11-13-2008, 10:38 PM
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Electrode wear????
Even if they did, the amount of wear could only be measured by engineers at NASA with a $10 million laser gaschromatigraph measuring device.
Gaps don't change. I've been changing my pulgs for 20 years on my cars, never once have the gaps changed from spark plug change to spark plug change...NOT ONE TINY BIT. And the electrodes are in the same exact condition as when they were new, just a different color. I did have an engine once that had coolant getting into the cylinders and that did corrode a few plugs pretty bad.
Even if they did, the amount of wear could only be measured by engineers at NASA with a $10 million laser gaschromatigraph measuring device.
Gaps don't change. I've been changing my pulgs for 20 years on my cars, never once have the gaps changed from spark plug change to spark plug change...NOT ONE TINY BIT. And the electrodes are in the same exact condition as when they were new, just a different color. I did have an engine once that had coolant getting into the cylinders and that did corrode a few plugs pretty bad.
you really think there is no such thing as electrode wear?
perhaps you should be a little more observant on future spark plug changes
this applies more so to regular copper sparkplugs, platinum and iridium wear a lot slower
I run TR55's in my car and gap them at .040 and after 15,000 miles or so they are probably in the .050 range
11-14-2008, 12:26 AM
#4
you really think there is no such thing as electrode wear?
perhaps you should be a little more observant on future spark plug changes
this applies more so to regular copper sparkplugs, platinum and iridium wear a lot slower
I run TR55's in my car and gap them at .040 and after 15,000 miles or so they are probably in the .050 range
11-14-2008, 07:19 AM
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They were the copper TR55's. I was just wondering if the gap would change on some but not on others or if the shop that gapped my plugs did a half *** job.....the gaps were all over the place ranging from .38 to .46
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11-14-2008, 10:10 PM
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I thought the NGK TR55's were platinum, not copper? My guess is that the previous ower/installer just did a crappy job. Buy yourself a gap tool for $1 and you won't have to guess anymore. That gap is WAY too small for a LS1 motor. Set them to the factory .60" and forget it. They WON'T change once you have them set right.
11-16-2008, 10:01 AM
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Big difference with the plugs all gapped the same lol!! A lot of my driveablility problems with the cam went away and it pulls a lot harder up top. Sadly, my car was dynoed with the old plugs.
