Anyone with NGK TR6 V-Power plugs - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 03-20-2004, 03:42 AM   #1
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Default Anyone with NGK TR6 V-Power plugs

How do you like your NGK TR6 plugs? I was doing some research and found that the plugs I had until last summer were 1 range colder, not two like believed (they were Iridium TR55IX). So I was checking out TR6'* and they look just like iridiums, except the center electrode.

What got me looking was my Autolite 5245 (3 range colder) plugs seem to have fouled.
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Old 03-20-2004, 04:10 AM   #2
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John, our mods are similar. I had the TR55'* (one colder) and they only lasted 3 months. Went to the TR6'*, and I'm into 4 months, and they're looking great.
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Old 03-20-2004, 01:04 PM   #3
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Kinda off topic, but can one range colder plugs run a little better then my stock range AC Delcos?
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Old 03-20-2004, 03:08 PM   #4
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Got KR? If so, then yes.
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Old 03-20-2004, 07:52 PM   #5
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Just swapped 'em. The Autolites were definately fouled. I may need to lean out the mixture a bit. But I'm gonna put in my A/F gauge tomorrow or Monday to get it right.

New plugs = satisfyling power linearity AND MUCH LESS SHUDDER!!!

I've still got a little that I need to narrow down, possibly ohm check the wires.
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