Do I have to gap?
Racer
Joined: Jul 2010
Posts: 262
Likes: 2
From: Shawnee Kansas
INFORMATION
Bulletin No.: 03-06-04-060B
Date: July 30 2008
Subject:
Information on New Spark Plugs and Gapping
Models
Attention: Please disregard the Set Gap Per Vehicle Specification statement on the side of an ACOelco(R) Iridium Spark Plug Box. The statement will be removed from the boxes in the future.
Supercede:
This bulletin is being revised to add the Chevrolet SSR and the 2005 Pontiac GTO. Please discard Corporate Bulletin Number 03-06-04-060A (Section 06 - Engine/Propulsion System).
^ 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 1.01 mm (0.040 in) when the spark plug is made.
Notice: 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.
Bulletin No.: 03-06-04-060B
Date: July 30 2008
Subject:
Information on New Spark Plugs and Gapping
Models
Attention: Please disregard the Set Gap Per Vehicle Specification statement on the side of an ACOelco(R) Iridium Spark Plug Box. The statement will be removed from the boxes in the future.
Supercede:
This bulletin is being revised to add the Chevrolet SSR and the 2005 Pontiac GTO. Please discard Corporate Bulletin Number 03-06-04-060A (Section 06 - Engine/Propulsion System).
^ 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 1.01 mm (0.040 in) when the spark plug is made.
Notice: 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: Aug 2003
Posts: 13,421
Likes: 8
From: Lake Mary Florida
That's the Iridium plug. You're ready to go.
Work on a cold engine. Apply aluminum anti-seize to the plug threads and torque each to the proper spec. 15Nm (11 lb-ft). Use dielectric grease on the plug boots.
There's some good tips around the forum, driver's side is easiest by just removing the AIR valve, two 10mm bolts swings out of the way.
Work on a cold engine. Apply aluminum anti-seize to the plug threads and torque each to the proper spec. 15Nm (11 lb-ft). Use dielectric grease on the plug boots.
There's some good tips around the forum, driver's side is easiest by just removing the AIR valve, two 10mm bolts swings out of the way.
Administrator
Joined: Mar 2001
Posts: 368,319
Likes: 24,777
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
The plugs should be pre-gapped. No need to change them.
