Expert Tech advice needed (on spark plugs.)
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Expert Tech advice needed (on spark plugs.)
I was going through my garage when I noticed 8 of my NGK TR55 Spark Plugs from my LS1 V8. They only have 300 miles on them when I swapped them for colder NGK TR6 plugs (when I added NO2.)
Rather than waste these highly rated plugs can I regap them to Nissan 350 Z specs and use them when I get my first oil change?
I am sure they produce more spark than stock ones and it has been my experience that stock plugs come from the factory gapped all over the place varying quite a bit. These NGK TR55 are proven performers!
So my question is, are spark plugs car and engine specific or is it just the gap that is important?
Thanks
Rather than waste these highly rated plugs can I regap them to Nissan 350 Z specs and use them when I get my first oil change?
I am sure they produce more spark than stock ones and it has been my experience that stock plugs come from the factory gapped all over the place varying quite a bit. These NGK TR55 are proven performers!
So my question is, are spark plugs car and engine specific or is it just the gap that is important?
Thanks
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Spark plugs aren't engine specific but there has to be compatiblity. The three main ones are:
1)Resistor
2)Thread Reach
3)Thread diameter
If the plugs you have have the those three things in common with the stock plugs you can use them.
1)Resistor
2)Thread Reach
3)Thread diameter
If the plugs you have have the those three things in common with the stock plugs you can use them.
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That makes sense
Thanks for the response/answer.
I bet they are not compatable.
Plugs are cheap anyway, I'll look at NGK's application table.
It's hard finding parts for 03's in manafacturer catalogues.
I do need my first oil change though I'm still using the break in oil and just hit 2200 miles.
I bet they are not compatable.
Plugs are cheap anyway, I'll look at NGK's application table.
It's hard finding parts for 03's in manafacturer catalogues.
I do need my first oil change though I'm still using the break in oil and just hit 2200 miles.
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Re: That makes sense
Originally posted by MaxHax
Thanks for the response/answer.
I bet they are not compatable.
Plugs are cheap anyway, I'll look at NGK's application table.
It's hard finding parts for 03's in manafacturer catalogues.
I do need my first oil change though I'm still using the break in oil and just hit 2200 miles.
Thanks for the response/answer.
I bet they are not compatable.
Plugs are cheap anyway, I'll look at NGK's application table.
It's hard finding parts for 03's in manafacturer catalogues.
I do need my first oil change though I'm still using the break in oil and just hit 2200 miles.
This is what I did to get the irridiums for my M, since the S54 engine is not listed anywhere. I agree with Zaph they are a great mix of performance and durability.
#6
Re: Re: That makes sense
Originally posted by Ferris
This is what I did to get the irridiums for my M, since the S54 engine is not listed anywhere. I agree with Zaph they are a great mix of performance and durability.
This is what I did to get the irridiums for my M, since the S54 engine is not listed anywhere. I agree with Zaph they are a great mix of performance and durability.
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Re: Re: Re: That makes sense
Originally posted by Zaphod 350z
You use irridiums in the beemer? Sweet. Jersey huh? Wanna give me a hand with the swap?
You use irridiums in the beemer? Sweet. Jersey huh? Wanna give me a hand with the swap?
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Denso sounds good
I think I checked their website for my application though based on a previuos recomendation here and couldn't find them. That is the brand I want.
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Re: Denso sounds good
Originally posted by MaxHax
I think I checked their website for my application though based on a previuos recomendation here and couldn't find them. That is the brand I want.
I think I checked their website for my application though based on a previuos recomendation here and couldn't find them. That is the brand I want.
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All the Plat and Iridium is marketing bs, except longevity, they will last longer. If you are going to be modifing your VQ just get the NGK copper version of the stock NGK plat plug. $2 vs $7 is a no brainer if you will be chaingine them often when you do mods etc.
For NA the easiest thing to do is creep the spark plug gap open a little bit at a time, when performance falls off back it down again and your done. The more you open the gap the more energy it takes to arc the gap, so the stronger the spark. The VQ's coil over plug system is VERY strong. Boost is another story, stock gap on a VQ30 is .042", I run .035" for boost.
For NA the easiest thing to do is creep the spark plug gap open a little bit at a time, when performance falls off back it down again and your done. The more you open the gap the more energy it takes to arc the gap, so the stronger the spark. The VQ's coil over plug system is VERY strong. Boost is another story, stock gap on a VQ30 is .042", I run .035" for boost.
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All the Plat and Iridium is marketing bs, except longevity
I was thinking of Spitfires? Not sure, I am so new to imports I am glad I have this forum to bounce this type of stuff off.
I'm not worried about longevity, I want max spark.
Like the Bosch 4+ or something.
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I'm with MardiGrasMax.
The stock plugs are NGK. Nissan's ignition systems are very good from the factory and they do well w/ NGK.
I'd stay away from Bosch. I recall seeing a pic of a Bosch plug next to an NGK plug and the Bosch plug had smaller electrodes.
Michael.
The stock plugs are NGK. Nissan's ignition systems are very good from the factory and they do well w/ NGK.
I'd stay away from Bosch. I recall seeing a pic of a Bosch plug next to an NGK plug and the Bosch plug had smaller electrodes.
Michael.
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Stock plugs are NGK?
Heck If that's the case there is no need to change them
My GMC's were "Delco's" and they wer gapped anywhere from 55 to 70 (no kidding) not one of the eight Delco's pulled was the same gap.
My GMC's were "Delco's" and they wer gapped anywhere from 55 to 70 (no kidding) not one of the eight Delco's pulled was the same gap.
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Originally posted by MardiGrasMax
All the Plat and Iridium is marketing bs, except longevity, they will last longer.
All the Plat and Iridium is marketing bs, except longevity, they will last longer.
#16
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The two paremeters that apply here are 1) plug life, and 2) spark power.
1) Plats and Irids are better and will last longer.
2)Copper will out perform them.
It is marketing crap to imply that Plats or Irids will produce a stronger spark then coppers, they wont. All the marketing is geared toward that angle.
Dint get me started on Splitfires or Plus4's
1) Plats and Irids are better and will last longer.
2)Copper will out perform them.
It is marketing crap to imply that Plats or Irids will produce a stronger spark then coppers, they wont. All the marketing is geared toward that angle.
Dint get me started on Splitfires or Plus4's
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So all marketing crap aside
What do others plan on using and are the stock NGK plugs platinum or what?
Is upgrading them early a good mod (like with LS1's?) or do they do the job?
Is upgrading them early a good mod (like with LS1's?) or do they do the job?
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Between copper, platinum, and iridium, copper is the best conductor, followed by platinum, followed by iridium. Higher conductivity = "better" spark.
However, between the 3, iridium is the densest, followed by platinum, followed by copper. Higher density = longer lifespan.
Michael.
However, between the 3, iridium is the densest, followed by platinum, followed by copper. Higher density = longer lifespan.
Michael.
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Originally posted by Michael-Dallas
Between copper, platinum, and iridium, copper is the best conductor, followed by platinum, followed by iridium. Higher conductivity = "better" spark.
However, between the 3, iridium is the densest, followed by platinum, followed by copper. Higher density = longer lifespan.
Michael.
Between copper, platinum, and iridium, copper is the best conductor, followed by platinum, followed by iridium. Higher conductivity = "better" spark.
However, between the 3, iridium is the densest, followed by platinum, followed by copper. Higher density = longer lifespan.
Michael.