ngk iridium plugs?

[sleepersupra]

i have a quick question about plugs i was reading a thread by another member and noticed that my car did the same thing only in different gears...

i thought that you couldn't gap iridium plugs and that you are suppose to leave the gap alone as to not mess up the iridium tip.

any response would be great.

 

[SupraDreamPDR]

i had the same question when i bought mine... but i ended up not gapping them and they ran fine. there are a few on here that said you can gap them, its just that they are really easy to break.

 

[IJ.]

Just have to be very careful with the centre electrode and make sure you don't touch it.

A point on IR plugs if you crank the boost up you can get plug overheating and a high rpm miss.

 

[aye mate]

I just dropped my Iridiums in with no gapping. I am running 12 psi on a stock turbo and fuel set-up. Smooth as glass.

 

[americanjebus]

i am running them they are pregapped, usually double check, i measured them and they were all within spec, car runs smooth as hell. Not enough boost on my engine to overheat them.

 

[IJ.]

The overheating issue didn't show up for me until 20psi+ and extended high speed pulls (150mph+)

 

[edi]

so, you would just get lower temp plugs if your gonna be boosting 20 or over psi, right?

 

[IJ.]

Nope what I think is happening with the fine tip IR's at sustained high rpm/boost is the centre tip is glowing and can't reject the heat and starts to glowplug so a change in heat range won't help.