iridium NGK iridiums are the Best Plugs. However it sounds like you have larger issues.
Shelby GT500 Spark plugs get burnt so fast...anyone help please
- Thread starter Shelby.Oman
- Start date
Blap..Blap...Blap Blap Blap. Blap it up....I'll take it Blap it up...I'll take it...that's right Fabulous Thunderbirds.
7's.....Iridiums......Jesus, I wish I sold spark plugs. I'd make a fortune on you guys.
Methinks you might just be over-analyzing it just a tad unless you're sporting some sort of massive horsepower or compound boost.
99% of GT500s modded to our (broad) levels are running TR6's with absolutely zero issues. I buy them for $1.99 each at Autozone. Unless you're using Torco up the wazoo or race gas as a steady diet, you really don't need to change them all that often either.
I WAY overdo it because it's a very cheap way to take a peek at how things are working. I change them every 2500 miles with my oil, but 90% of the miles on my car are racing it. I set them at .032 with 17-18psi on a ported Eaton and a 93/110 mix. They run clean, efficient and cheap. :rockon:
OP....sorry for the thread diversion. Post up a pic or two so people can give you some real feedback instead of speculation.
bj
Methinks you might just be over-analyzing it just a tad unless you're sporting some sort of massive horsepower or compound boost.
99% of GT500s modded to our (broad) levels are running TR6's with absolutely zero issues. I buy them for $1.99 each at Autozone. Unless you're using Torco up the wazoo or race gas as a steady diet, you really don't need to change them all that often either.
I WAY overdo it because it's a very cheap way to take a peek at how things are working. I change them every 2500 miles with my oil, but 90% of the miles on my car are racing it. I set them at .032 with 17-18psi on a ported Eaton and a 93/110 mix. They run clean, efficient and cheap. :rockon:
OP....sorry for the thread diversion. Post up a pic or two so people can give you some real feedback instead of speculation.
bj
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back again with helpful link
hi guys
i couldnt find a damaged plug, but i recorded the car sound as i said before (blap blap blap) I really hope that someone can tell me what wrong with the car \:shrug:
as a check engine light showed up today
heres a link for the car sound: 2shared - download m4a.m4a
hi guys
i couldnt find a damaged plug, but i recorded the car sound as i said before (blap blap blap) I really hope that someone can tell me what wrong with the car \:shrug:
as a check engine light showed up today
heres a link for the car sound: 2shared - download m4a.m4a
I can't get it to play, it wants me to download something and I'm not doing that.
Besides, I highly doubt anyone is going to be able to diagnose this car by hearing a recording of its exhaust note.... If you really want help, your going to have to help us help you. Pull a few plugs and take some pics of them.
You also never answered if the car was tuned before or after the pulley. Was the tune made for the pulley or did you just get a basic, performance tune and then put a pulley on it?
Besides, I highly doubt anyone is going to be able to diagnose this car by hearing a recording of its exhaust note.... If you really want help, your going to have to help us help you. Pull a few plugs and take some pics of them.
You also never answered if the car was tuned before or after the pulley. Was the tune made for the pulley or did you just get a basic, performance tune and then put a pulley on it?
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sorry for that
anyway, it was tuned after putting the pulley, but its still misfiring from the plugs (either the standard shelby motorcraft plugs or the ngk tr6 0.035)
the tuner asked us to try gapping 0.040!!!
by a week time i'll try to get current plugs pics
btw the plugs doesnt get missfire unless we push hard on the car
anyway, it was tuned after putting the pulley, but its still misfiring from the plugs (either the standard shelby motorcraft plugs or the ngk tr6 0.035)
the tuner asked us to try gapping 0.040!!!
by a week time i'll try to get current plugs pics
btw the plugs doesnt get missfire unless we push hard on the car
There have been several owners that had misfire problems with TR6 plugs at higher RPM's above stock boost, switch to NGK BR7EF and gap to .034. That should solve your issue if it is plug related.
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:
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:
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