important spark plug info
Thread Starter
Joined: Nov 2001
Posts: 7,903
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From: Cleveland, OH
important spark plug info I figure this will come in handy for some searching later
We all use NGK tr6s.
In the past I have used and recommended Autolite 103 as a substitute. After researching today, I find that the 103 is NOT a substitute...as a matter of fact it cross references to a NGK tr5 which I ASSume is hotter than stock! The tr6 does cross reference to a Autolite AR103......which is a "race" plug. So remember 103 and AR103 are 2 different plugs Autolite offers but the AR103 is the correct sub for a NGK tr6. Hope someone will find this useful.
Is a tr5 indeed hotter than a tr55?
We all use NGK tr6s.
In the past I have used and recommended Autolite 103 as a substitute. After researching today, I find that the 103 is NOT a substitute...as a matter of fact it cross references to a NGK tr5 which I ASSume is hotter than stock! The tr6 does cross reference to a Autolite AR103......which is a "race" plug. So remember 103 and AR103 are 2 different plugs Autolite offers but the AR103 is the correct sub for a NGK tr6. Hope someone will find this useful.
Is a tr5 indeed hotter than a tr55?
I was always told that the TR5 and 55's only differ in terms of in-the-box gap.
I'm currently running TR8's gapped around .030. I also have a set sets of Autolite plugs that Kurt@W2W suggested, I have tended to alternate. I just warm up the car, do my burnout, and then clear them out in neutral.
I'm currently running TR8's gapped around .030. I also have a set sets of Autolite plugs that Kurt@W2W suggested, I have tended to alternate. I just warm up the car, do my burnout, and then clear them out in neutral.
