Spark Plugs
#21
![Default](https://www.s2ki.com/forums/images/icons/icon1.gif)
Agreed but since the copper is more conductive/less likely to overheat and I only put maybe 9k a year its worth it for me.
Looking for anyway I can to maximize performance/mpg.
Looking for anyway I can to maximize performance/mpg.
#22
Registered User
![](https://staticssl.ibsrv.net/autocomm/Content/S2Ki/milestonestars-5yr.png)
![Default](https://www.s2ki.com/forums/images/icons/icon1.gif)
All NGK plugs have copper cores. If you buy 'copper' plugs, they are still plated with something, possibly a nickel chrome alloy. If they didn't they'd melt/wear out very quickly.
http://www.ngksparkplugs.com/pdf/DYK_5Points.pdf
http://www.ngksparkplugs.com/pdf/DYK_5Points.pdf
#23
![](https://staticssl.ibsrv.net/autocomm/Content/S2Ki/milestonestars-10yr.png)
![Default](https://www.s2ki.com/forums/images/icons/icon1.gif)
All NGK plugs have copper cores. If you buy 'copper' plugs, they are still plated with something, possibly a nickel chrome alloy. If they didn't they'd melt/wear out very quickly.
http://www.ngksparkplugs.com/pdf/DYK_5Points.pdf
http://www.ngksparkplugs.com/pdf/DYK_5Points.pdf
#24
![Default](https://www.s2ki.com/forums/images/icons/icon1.gif)
Thanks to DWIGHT Im confused again. lol.
I called NGK , no answer. This sucks. I just want to know which one is better for me aghhhhhhh![banghead.gif](https://www.s2ki.com/forums/images/smilies/banghead.gif)
Every plugs internal core is copper. Tip is plated with another substance. So which is better!
I called NGK , no answer. This sucks. I just want to know which one is better for me aghhhhhhh
![banghead.gif](https://www.s2ki.com/forums/images/smilies/banghead.gif)
Every plugs internal core is copper. Tip is plated with another substance. So which is better!
#26
Registered User
![](https://staticssl.ibsrv.net/autocomm/Content/S2Ki/milestonestars-5yr.png)
![Default](https://www.s2ki.com/forums/images/icons/icon1.gif)
Originally Posted by dwight' timestamp='1331223126' post='21489662
All NGK plugs have copper cores. If you buy 'copper' plugs, they are still plated with something, possibly a nickel chrome alloy. If they didn't they'd melt/wear out very quickly.
http://www.ngksparkplugs.com/pdf/DYK_5Points.pdf
http://www.ngksparkplugs.com/pdf/DYK_5Points.pdf
http://www.physicsclassroom.com/clas...tics/u8l4d.cfm
It doesn't matter if it's 1% chance or one in a million. Five times longer life means five times less the chance of screwing something up.
When I got my car, I did a VA and checked the plugs. They were within spec. I ordered new plugs to change them out, but I've haven't been driving the S2000 much so the plugs are still sitting on the shelf.
#27
![Default](https://www.s2ki.com/forums/images/icons/icon1.gif)
so should I re-gap my to stock spec or just leave them alone? I understand you don't want to re-gap iridium as you can damage it however there are ways to re-gap it by the electrode. let me know what would be the benefit of leaving it is or re-gapping it to stock gap. will there be any damage if gap incorrectly?
#28
![](https://staticssl.ibsrv.net/autocomm/Content/S2Ki/milestonestars-10yr.png)
![Default](https://www.s2ki.com/forums/images/icons/icon1.gif)
so should I re-gap my to stock spec or just leave them alone? I understand you don't want to re-gap iridium as you can damage it however there are ways to re-gap it by the electrode. let me know what would be the benefit of leaving it is or re-gapping it to stock gap. will there be any damage if gap incorrectly?
#29
![Default](https://www.s2ki.com/forums/images/icons/icon1.gif)
thnx for the response. I understand gapping irridum is dangerous. I'm asking the spark plug that i got is a one step colder than stock and it comes pre-gap at .32 whereas the stock plugs are at .44
my question what is the harm if i leave them at .32?
my question what is the harm if i leave them at .32?
#30
![](https://staticssl.ibsrv.net/autocomm/Content/S2Ki/milestonestars-10yr.png)
![Default](https://www.s2ki.com/forums/images/icons/icon1.gif)
You can safely open up the gap, just take your time and be careful. The factory plugs start at .039" so they can take their time growing up to the service limit of .051". I'd take yours up to .039", you could go to .043" if you don't mind changing them a bit sooner down the road.