Hi Guys,

Just wondered if there is a generally agreed on opinion about what brand/type of spark plugs worth upgrading to in an 04 350z NA? Iridium, copper, platinum, split fire?

I tried searching but didn't find anything too useful.

Thanks

Joel

 

Just land you self some NGK Platinum plugs. Work great for NA. I believe the OEM plugs are NGK. Not sure how well the Iridium would work on NA. Not referring to the one degree colder, just in case you might ask.

 

+1 run on the NGK iridiums--I use those on my N/A setup.

Some like the Denso, but I heard that they are more prone to failing. I dunno if that's true or not (I'm sure Denso also has quality plugs), but I went for the NGK and they've been fine.

 

A friend showed me this http://www.pulstarplug.com/ interesting

 

how much do the ngk run for?

 

Not sure for stock. My plugs which are one step colder for my FI were $58 bucks for six. That's the NGK Iridium..

 

We use NGK Iridium Spark Plugs. We have one step, and two step colder.

 

www.ForgedPerformance.com

 

So anyone ever heard of anyone useing the pulse plugs at all? Im real curious bout them.

 

Dunno, but those are hella expensive at $24.95 each

 

Interesting read on the site although I doubt it will produce any noticeable benefits. I am not quite sure how this spark plug can actually accelerate the flame front in the cylinder and even if it does, that may not be the best thing anyways. They seem to have it all explained but some things don't stick in my head.

Iridiums are good, so are platinums. The truth is, copper plugs are the best for performance. Copper has the lowest resistance out of all 3 elements and will give you best performance. So, you may ask, why did Nissan put Platinum plugs in? It's out of pure laziness for your benefit. They don't have to be changed as often as coppers. Also, it's important to know that platimun plugs are not made entirely out of platinum. The puck is the only part made out of the element and therefore can separate from the plug and that can be disastrous. That's why I don't use platinums. It's rare but I've seen pictures of engines that suffered this ill fate. Iridiums are decent but the real true advantage to them is durability, not performance. I'd go with basic NGK coppers and change them frequently to assure max performance and optimal gap. Our engines are so easy to work with for plugs that it's an easy affair.

 

Yeah i read it too seems real interesting but who knows.