NGK TR51X spark plug
Thread Starter
Instructor
Joined: Jan 2011
Posts: 215
Likes: 0
From: N. Las Vegas Nevada
NGK TR51X spark plug
Ok, i got these TR51X and the NGK Website recommends a Gap of .04. Does this seem right?
http://www.ngksparkplugs.com/part_fi...uv/results.asp
http://www.ngksparkplugs.com/part_fi...uv/results.asp
Safety Car
Joined: Jan 2001
Posts: 4,387
Likes: 691
From: Boise ID
Information on New Spark Plugs and Gapping #03-06-04-060 - (Oct 24, 2003)
A new spark plug has been released for use in the above vehicles. The new spark plug has an Iridium tip instead of the current Platinum tip. Due to the different tip design, the gap of the spark plug has also changed. The new spark plug, P/N 12571164 with AC Delco P/N 41-985, is gapped to 1.01mm (0.040 inches) when the spark plug is made. The spark plug gap is set during manufacturing and should not be changed or damage to the spark plug may result. Any new spark plug found to not be properly gapped should not be used.
Thread Starter
Instructor
Joined: Jan 2011
Posts: 215
Likes: 0
From: N. Las Vegas Nevada
Actually a bulletin came out changing the gap from .60 to .40.
Information on New Spark Plugs and Gapping #03-06-04-060 - (Oct 24, 2003)
A new spark plug has been released for use in the above vehicles. The new spark plug has an Iridium tip instead of the current Platinum tip. Due to the different tip design, the gap of the spark plug has also changed. The new spark plug, P/N 12571164 with AC Delco P/N 41-985, is gapped to 1.01mm (0.040 inches) when the spark plug is made. The spark plug gap is set during manufacturing and should not be changed or damage to the spark plug may result. Any new spark plug found to not be properly gapped should not be used.
Information on New Spark Plugs and Gapping #03-06-04-060 - (Oct 24, 2003)
A new spark plug has been released for use in the above vehicles. The new spark plug has an Iridium tip instead of the current Platinum tip. Due to the different tip design, the gap of the spark plug has also changed. The new spark plug, P/N 12571164 with AC Delco P/N 41-985, is gapped to 1.01mm (0.040 inches) when the spark plug is made. The spark plug gap is set during manufacturing and should not be changed or damage to the spark plug may result. Any new spark plug found to not be properly gapped should not be used.
Melting Slicks
Joined: Jun 2010
Posts: 2,809
Likes: 3
From: Yorktown Virginia
Actually a bulletin came out changing the gap from .60 to .40.
Information on New Spark Plugs and Gapping #03-06-04-060 - (Oct 24, 2003)
A new spark plug has been released for use in the above vehicles. The new spark plug has an Iridium tip instead of the current Platinum tip. Due to the different tip design, the gap of the spark plug has also changed. The new spark plug, P/N 12571164 with AC Delco P/N 41-985, is gapped to 1.01mm (0.040 inches) when the spark plug is made. The spark plug gap is set during manufacturing and should not be changed or damage to the spark plug may result. Any new spark plug found to not be properly gapped should not be used.
Information on New Spark Plugs and Gapping #03-06-04-060 - (Oct 24, 2003)
A new spark plug has been released for use in the above vehicles. The new spark plug has an Iridium tip instead of the current Platinum tip. Due to the different tip design, the gap of the spark plug has also changed. The new spark plug, P/N 12571164 with AC Delco P/N 41-985, is gapped to 1.01mm (0.040 inches) when the spark plug is made. The spark plug gap is set during manufacturing and should not be changed or damage to the spark plug may result. Any new spark plug found to not be properly gapped should not be used.
Race Director
Joined: Jul 2007
Posts: 18,681
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From: Reno is so close to Hell you can see Sparks , State Of Confusion
St. Jude Donor '12-'13-'14
Everywhere I have read says the plugs are pre-gapped, If it isn't correct it says don't use them and don't try to gap them yourself, You can damage the ground tip and possibly break off in the cylinder.
