Spark Plug Gap
Thread Starter
Drifting
Joined: Oct 2004
Posts: 1,597
Likes: 1
From: Columbus, OH
Spark Plug Gap
I posted this in the Tech section with no response.
I read all the search hits for "gap" and didn't find a definitive answer.
I am putting in NGK TR55IX irridium plugs in my 2001 today. They came gapped at .055. The service manual recommends .060 gapping in stock irridiums. I've read varying recommended gaps and don't know what to do. Should I try to re-gap to something different or just put them in as they are (.055). If I need to re-gap, how do I do it without damaging the plug?
Thanks in advance!
I read all the search hits for "gap" and didn't find a definitive answer.
I am putting in NGK TR55IX irridium plugs in my 2001 today. They came gapped at .055. The service manual recommends .060 gapping in stock irridiums. I've read varying recommended gaps and don't know what to do. Should I try to re-gap to something different or just put them in as they are (.055). If I need to re-gap, how do I do it without damaging the plug?
Thanks in advance!
Racer
Joined: Jul 2004
Posts: 405
Likes: 0
From: Colorado Springs CO.
I replaced mine with Iridium Delco's. There was a huge caution NOT to change the gap or it will damage the plug. I'm guessing the NGK's probably have a similar warning. I wouldn't mess with it, you're holding about $50 bucks in your hand 
Le Mans Master
Joined: Sep 2003
Posts: 6,273
Likes: 225
From: Farmington CT
Cruise-In VII Veteran
aren't tr55's good enuf? is there any worth to the iridium's, i would prefer changing the plugs every 10k or so, that way it's cheap insurance for the threads in the heads IMHO 
Thread Starter
Drifting
Joined: Oct 2004
Posts: 1,597
Likes: 1
From: Columbus, OH
Originally Posted by connecticut
aren't tr55's good enuf? is there any worth to the iridium's, i would prefer changing the plugs every 10k or so, that way it's cheap insurance for the threads in the heads IMHO
