Iridium Spark Plugs

[Hermes]

So after reading about the differences between platinum and iridium I decided to check with the local shops to see who had them. All I could find are the ones with 1 sparking point/prong (whatever it's called). Does anybody know if Bosch or NGK makes a version with 4? I remember reading years ago that the reason for more than one was something like more efficient sparking/combustion in the chamber and that's why I'm looking for them. If you know of where to find (part# please) or have opinions either way I would appreciate it. Thanks

[danewilson77]

The NGK BKR6EQUP's have 4 spark points brutha...

http://i1015.photobucket.com/albums/af278/nicee46/Maintenance%20and%20Misc/141075_x600-1.jpg

http://www.ecstuning.com/Search/Bkr6equp/ES10331/

[Hermes]

Have those (they're the plat's), looking for the same but iridium

[nike001]

Just get the ones with the 1 sparking point. I've heard that there is no difference or advantage to having the 4-spark ones

[Hermes]

NGK's explanation to why you have more than one:

Some combustion chamber designs (such as a rotary motor) require that the spark plugs have the ground electrode placed to the side of the center electrode rather than below as on a traditional plug (see photo). This firing tip design tends to erode the tip of the ground electrode faster than a traditional plug. Erosion at these points creates a larger gap between the center and ground electrodes, causing plug misfire. Thus, by having more ground electrodes, you extend plug life. It is important to note that multi-ground does not mean multi-spark, there will still only be one spark at a time. Therefore, a multi-ground plug will not perform any better and may actually perform worse than a traditional plug, unless the engine is designed for a multiple ground plug.

http://www.ngk.com/images/pic_plug411.jpg

[danewilson77]

But why iridium? Hotter and more consitent spark?

[Hermes]

Forgot who said it but somebody on here said it's the way to go.

Look at this:

http://www.densoiridium.com/faq.php

[danewilson77]

Forgot who said it but somebody on here said it's the way to go.

Look at this:

http://www.densoiridium.com/faq.php

OK.

I always recommend the BKR6EQUP's.....

[Hermes]

Yeah, love those (have those). Just wanna see if these are better

[danewilson77]

Yeah, love those (have those). Just wanna see if these are better

k

[S85FTW]

Yeah I was the one who told you about the iridium plugs, when I took my car to JG technik they said that one sparking point is sufficient with the iridium spark plugs vs the four pronged regular plugs. This is because the iridium plugs allow for more efficient combustion to begin with, so a single tip iridium plug>four tip plat

[Newjack]

Yeah I was the one who told you about the iridium plugs, when I took my car to JG technik they said that one sparking point is sufficient with the iridium spark plugs vs the four pronged regular plugs. This is because the iridium plugs allow for more efficient combustion to begin with, so a single tip iridium plug>four tip plat

So it sounds like iridium spark plugs are the same as platinum except iridium can get away with 1 spark point due to more efficient combustion.

1 tip iridium=4 tip platinum?

[S85FTW]

This should help shed some light on this, maybe I should get this stickied bc this is the second time now this has come up.

http://www.spark-plugs.co.uk/pages/technical/iridium_spark_plugs.htm

[Hermes]

Cool thanks, exactly what I was trying to figure out. Which ones do you have, the Bosch or NGKs?

[S85FTW]

NGKs

[Hermes]

Sounds good, thanks again