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SVT Shelby GT500
Shelby GT500 Spark plugs get burnt so fast...anyone help please
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<blockquote data-quote="PistolWhip" data-source="post: 10232925" data-attributes="member: 30361"><p>Yeah, .040 is too large of a gap. Your missfire is probably spark blow out. I'd try gapping them down to .034 like stated above and if it still does it, go down to .032. </p><p></p><p>I've also had very good luck with Autolite 103's which are the same heat range as the TR6's. I had them in both of my Cobras and my 500 RWHP 2V motor and all three of those cars ran great on them. My Coupe which was a 600 RWHP car ran great on TR6's and 103's but ran the best on Autolite XP Iridiums. I think the part number was XP103 if I remember correctly.</p><p>Just keep in mind that when you run a standard copper plug in a car making high power and high boost, you will need to change them out more often. Depending on the fuel your using and the abuse your putting the car through, you probably want to change them every oil change or every other oil change. </p><p></p><p>Who tuned the car by the way? If it wasn't someone that's reputible or well known in the Mustang community, you may want to have the tune double checked by someone that is. I can't believe that a tuner that knows these cars would recommend a .040 gap, but hey, what do I know... :beer:</p></blockquote><p></p>
[QUOTE="PistolWhip, post: 10232925, member: 30361"] Yeah, .040 is too large of a gap. Your missfire is probably spark blow out. I'd try gapping them down to .034 like stated above and if it still does it, go down to .032. I've also had very good luck with Autolite 103's which are the same heat range as the TR6's. I had them in both of my Cobras and my 500 RWHP 2V motor and all three of those cars ran great on them. My Coupe which was a 600 RWHP car ran great on TR6's and 103's but ran the best on Autolite XP Iridiums. I think the part number was XP103 if I remember correctly. Just keep in mind that when you run a standard copper plug in a car making high power and high boost, you will need to change them out more often. Depending on the fuel your using and the abuse your putting the car through, you probably want to change them every oil change or every other oil change. Who tuned the car by the way? If it wasn't someone that's reputible or well known in the Mustang community, you may want to have the tune double checked by someone that is. I can't believe that a tuner that knows these cars would recommend a .040 gap, but hey, what do I know... :beer: [/QUOTE]
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SVT Shelby GT500
Shelby GT500 Spark plugs get burnt so fast...anyone help please
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