Iridium Spark plugs?

[_BR1TT0N_]

Hiya, people always say about gettin iridium spark plugs instead of the platinum ones. I have an 03 import zed. What type of ones do I need to get? This company asked me for a number for them? Also what advantages do these have? Cheers

[Sam Mcgoo]

For a stock DE engine= Denso IKH16 or equivalent in another make.

 

Iridium plugs are just better all round. They give a better spark then the platinum ones and tend to be cheaper too.

 

or look here viewtopic.php?f=157&t=44399

 

and I'm sure other traders sell them too.

[Tricky-Ricky]

The only difference between iridium plugs and other precious metal plugs is the service life, the better spark bit is just hype, if someone had actually made a better sparking plug they would have cornered the market by now, plug manufactures have been claiming the "new better plug" bit for over a hundred years now

[ZMANALEX]

Denso Iridium is the preferred choice of the informed:

 

Plenty in stock for 350Z DE, 350Z HR, 370Z and GTR R35.

 

Alex.

[cmck13]

Denso Iridium is the preferred choice of the informed:

 

Plenty in stock for 350Z DE, 350Z HR, 370Z and GTR R35.

 

Alex.

 

I wondered where you were Alex

 

But, +1 for Alex and his spark plugs can't go wrong with these.

[Tricky-Ricky]

I am running copper cored in mine, and also run them in every turbo car i have owned, certainly wouldn't use denso iridium in a FI car either, and at £12 a set for copper, i am quite happy to change them every 10,000 miles

same reason i wont use an over specked oil.

[Sam Mcgoo]

I am running copper cored in mine, and also run them in every turbo car i have owned, certainly wouldn't use denso iridium in a FI car either, and at £12 a set for copper, i am quite happy to change them every 10,000 miles

same reason i wont use an over specked oil.

 

 

I would agree with using copper while trying new engine mods and for tuning, from a sacrificial point of view as they will melt before the pistons do, but once properly tuned and known to be running well why not use a better plug that you don't have to change every 10k.

[Tricky-Ricky]

I am running copper cored in mine, and also run them in every turbo car i have owned, certainly wouldn't use denso iridium in a FI car either, and at £12 a set for copper, i am quite happy to change them every 10,000 miles

same reason i wont use an over specked oil.

 

 

I would agree with using copper while trying new engine mods and for tuning, from a sacrificial point of view as they will melt before the pistons do, but once properly tuned and known to be running well why not use a better plug that you don't have to change every 10k.

 

 

Since i would probably pull my plugs every couple of K anyway just to check and pre empt any problems, i have no problem changing them that often,

like i said its just service life there is no performance difference between iridium, platinum or coper core, same goes for a lot of modern oils, they are designed and specked for longer service intervals, in some cases in excess of 20K rather than 6-9K, personally i would rather know that my oil in relatively uncontaminated by combustion by products, rather than chemically bonded to the oil.