NGK TR55's or TR6's?
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 7,156
Likes: 154
From: The Arid Sunny Desert
NGK TR55's or TR6's?
If not boosted or running juice is there any reason to run TR6's? I currently run TR55's and I am experiencing a rough cold idle start but that may be more due to tuning than the plugs. Anyone use both and have some real world experience to share? 
Melting Slicks
Joined: Sep 2000
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From: Milton, West Virginia
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I've been running TR55's for almost 2 years...no cold start problems here...gapped at 55 I believe. Sorry haven't used the others.
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 7,156
Likes: 154
From: The Arid Sunny Desert
Originally Posted by eamador11
I have tr55s and gapped at .055 no abnormal cold start problems here either
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Michael S. Palmer
Race Director
Joined: May 2001
Posts: 15,324
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From: Guelph, Ontario
I put in TR6s in my C5 because I needed a plug change badly when I was getting it dyno tuned (the OEM plugs were giving me 7 degrees of KR!) so I had no choice. After only 2000 miles and one bad traffic jam I developed a very slight miss at idle. Swapped them out for TR55s and all is well.
I ran TR6s for a while in my 98 LS1 Firebird too, and they fouled out badly in just 13k. The engine would misfire so bad above 5000 rpm at that point that I thought the fuel pump was toast.
I ran TR6s for a while in my 98 LS1 Firebird too, and they fouled out badly in just 13k. The engine would misfire so bad above 5000 rpm at that point that I thought the fuel pump was toast.
Melting Slicks
Joined: Jun 2001
Posts: 2,266
Likes: 550
Went to tr6 as per ngk tech suggestion, for detonation problems. Has been running fine, It idles great and always idled until oil hits 120-150 degrees. Maybe some idle issues are tuning related. No problems here will stay with a colder plug, I have a stock engine Ron B.
Ron B.
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 7,156
Likes: 154
From: The Arid Sunny Desert
Originally Posted by TorchRedRaider
summitracing.com
order wires last month, have invoice in my desk
MSD's were $50.95 + 8.95 sh
order wires last month, have invoice in my desk
MSD's were $50.95 + 8.95 sh
