jdub said:
I've heard of this but never actually run into this my self. Do you know if it is just one particular brand of wire or is it the majority of the aftermarket plug wires out there.
whats the best plugs to get
- Thread starter 7mgtesupra
- Start date
I've heard of this but never actually run into this my self. Do you know if it is just one particular brand of wire or is it the majority of the aftermarket plug wires out there.
I know MSD wires will from personal experience 
You get a slight miss...especially at idle. Changed to stock length plugs and it disappeared. I've also seen it on stock wires, but in that case we changed the plugs and wires. Could have been the wires themselves.
You get a slight miss...especially at idle. Changed to stock length plugs and it disappeared. I've also seen it on stock wires, but in that case we changed the plugs and wires. Could have been the wires themselves.
Adjuster
Supramania Contributor
All plugs will do the same thing pretty much. Spark.
How long they will keep the same gap, and how easy it is to get the spark to jump from the electrode to the ground strap is another thing entirely.
Small points make it easy for electricity to jump off so to speak. (Thus why most Irridum plugs idle so well, and work so well.)
The V grove ground strap tends to give a nice sharp edge to go back to ground at... (Or vise/versa.. there is theory that electricity goes backwards so to speak, but understand that sharp points make this easy in either direction, and smooth, rounded edged parts are less likely to create the jumping off point for the spark..)
Simple right?
Copper is an excellent heat and power conductor..
Platinum is great too, and does not errode as easy.
Irridium is a great conductor, and is very hard, and holds up to high heat well, so it's even better at keeping the "point" the right shape and distance from the ground strap...
There you go.
Pick your poison.. (I run the Irridium plugs because I don't like to change them often, and they hold up well to high boost, and abuse in my experiance. Also gap your plugs to .28, and you will have few problems with high boost, high rpm misfire... The stock setting is too wide.)
Merry Christmas!
How long they will keep the same gap, and how easy it is to get the spark to jump from the electrode to the ground strap is another thing entirely.
Small points make it easy for electricity to jump off so to speak. (Thus why most Irridum plugs idle so well, and work so well.)
The V grove ground strap tends to give a nice sharp edge to go back to ground at... (Or vise/versa.. there is theory that electricity goes backwards so to speak, but understand that sharp points make this easy in either direction, and smooth, rounded edged parts are less likely to create the jumping off point for the spark..)
Simple right?
Copper is an excellent heat and power conductor..
Platinum is great too, and does not errode as easy.
Irridium is a great conductor, and is very hard, and holds up to high heat well, so it's even better at keeping the "point" the right shape and distance from the ground strap...
There you go.
Pick your poison..
(I run the Irridium plugs because I don't like to change them often, and they hold up well to high boost, and abuse in my experiance. Also gap your plugs to .28, and you will have few problems with high boost, high rpm misfire... The stock setting is too wide.)Merry Christmas!
How much boost are you running Adjuster?
I've got Iridiums and I'm only running minor modifications, eg: DDP, intercooler, AVCR, and set to just below fuel cut. I have the plugs that are one step colder than stock plugs, though. I haven't gapped any of my Iridiums as I haven't experienced any of those problems. But of course that's probably because I'm not making as much power as you haha.
I've got Iridiums and I'm only running minor modifications, eg: DDP, intercooler, AVCR, and set to just below fuel cut. I have the plugs that are one step colder than stock plugs, though. I haven't gapped any of my Iridiums as I haven't experienced any of those problems. But of course that's probably because I'm not making as much power as you haha.
Another LA term eh Jay?
I used autolites with NGK wires and experienced the arching mentioned earlier by John.
Switched to NGK coppers stock heat range, problem solved.
I used autolites with NGK wires and experienced the arching mentioned earlier by John.
Switched to NGK coppers stock heat range, problem solved.
Adjuster said:
i disagree. telling people to use a gap that low is too much of a blanket statement. the wider the gap you can run without misfire the better. everyone's car is going to be different, and should tune heat range and gap for their individual car.
Absolutely, Dave!dbsupra90 said:
I was able to squeeze out 350hp/tq with 10psi on my old Master Power turbo with a .042" plug gap on my Autolite coppers.
Now I'm running the NGK bcpr6es stock heat with a .025" gap, and they're holding high boost just fine.
I never had an issue with my Autolites being a hair too short either, however I wasn't using the "center valley" gasket.
HTH.
-Brent
But the metal is "strong"
Honestly, I've never used them, and many on here use them and are laying down more power and boost than me and haven't had any issues out of them that I've heard of...
Honestly, I've never used them, and many on here use them and are laying down more power and boost than me and haven't had any issues out of them that I've heard of...
The only issue I see with iridiums is that fine point can get real hot under prolonged periods of sustained high boost, and become a potential source of pre-ignition with it's ultra small tip. Also iridium doesn't dissipate heat as well as say copper, so the heat stays built up in the tip for longer.
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suprarcr89
The Juggernaut has my old
NGK iridiums and wires have performed flawlessly for me in all of my Supras. I usually only measure the gap to make sure it's within reason (all have been pretty consistent) - haven't noticed any issues just dropping them in :dunno:.