I know that they don't last as long, but the coppers are so much cheaper than the platinums. Is there any reason to stay with the plats?

thx,
-Ace-

 

 

yes, darren is correct. they only last for 30k

 

My opinion is that you don't need to waste money on unnecessary things for a Maxima. However, imho you should never install something that is below what comes from the factory, such as belts, hoses, batteries, brake pads, filters, plugs, and so on. My suggestion is to just bite the bullet and go with platinum plugs. You can get 25%-30% off list at which price they still aren't cheap, but they're not that bad.

 

Most people who use copper plugs have forced induction setups which benefit from cold plugs.

 

Platinum Plugs are not above Copper Plugs.. performance wise.. and if you are talking about going below preformance of stock parts.. Copper is better... they just don't last as long as Platinum Plugs.. but they provide a better spark and better performance.. so Copper Plugs are above Platinum Plugs Performance wise..

They are not colder plugs... they are stock heat range.. the reason most people with Forced Induction are using copper plugs is because it has a better spark and gives better performance.. NOS at one point actually suggested not using platinum plugs with their systems becuase the spark wasn't as great..

 

I switched over to denso iridium plugs recently and they seem awesome. My platinums were gone after 45k miles and the denso's made up for a little lost pep. I got the denso iridium plugs for ~$10.50/plug, which was quite a bit cheaper than the ngk platinums on the sites I looked at

 

In that case it's a no-brainer. Save money and get a better plug with copper.

 

you have been looking at the wrong sites..haha



that is about the right price for NGK plats as well

 

you probably got more pep because your old plugs were done... but in actuallity .. it would be no more pep than a new set of plat plugs

 

*nod*.. I forgot to say that earlier..

 

I must have.. the best price I saw for PLFR5A-11 plugs was I think $13.50. I forget which sites I was looking at though

 

Thanks for all the replys. I'm definately going with coppers since there don't seem to be any drawbacks. They're about 1/5 the price of the platinums, so even if I have to change them twice as often I still come out ahead.

-Ace-

 

My dealer even sells them at almost 1/2 that price.

Guys, check your local dealers for plugs for your car. Some of them are much cheaper then local auto parts stores and .com shops when you factor in shipping charges.

A phone call is all it takes........

 

I know we aren't talking that much of a difference in performance but would you say the copper plugs are better than the denso iridiums?

 

yes.. the provide better spark than iridum and platinum... copper is a better heat conductor

 

Damn that was a fast reply, thanks.

 

dealership wanted $16~ for platinums, but they've been overpriced on just about everything I've called about

 

Me too! A worthwhile investment if they last as long as people say.

SprintMax mentioned earlier that Iridium's spark is not as great as copper, but from what I've read and heard it is equivalent, if not better than copper. The metal has better conductive properties than copper and you get a smaller point on the end (0.04 mm) so it's more focused if that helps too.