Well?

 

Unless they make a "NGK-Style" then you'll also be installing a new engine along with those plugs.

This is because some spark plugs may "interfere" with path of the apex seal. In other words...put those plugs in and watch pieces of apex seal go out your exhaust.

 

I was refering speciffically to the NGK plugs :P
HKS stocks NGK iridiums

 

Appaerntly Im not the only one wondering so...WTF is iridium???

 

Doesn't anybody else know how to use Google?!

http://www.ngksparkplugs.com/product...idiumintro.asp

 

thx nz So whatsyuor verdict you think they are worth it?

 

Can also be found here
http://www.rx7store.net/ignition1.htm

Do I get a comission?

 

Well I found this test (Google again!) which seems pretty positive. A 750hp improvement is pretty good from spark plugs, I might get some!

http://209.132.206.136/content/pht/pht20010101ds.xml

 

Hah! I feel jipped! I only got a 500 hp increase from my plugs

 

Interesting stuff when applied to a turbo! Has anyone used these? How much do they run?

 

Ok, if the center electrode is Iridium, what about the rest of the uh... outer plug thingie that the spark goes to(i really can't for the life of me think of what its called). I have an MSD that seems to be ripping up my plugs kinda quickly, especially my rear rotor. The center electrode is worn but the outer uh... thing is really worn, and makes for a much larger gap. If these things really last, I might look into getting some. Any more info there?

 

Aren't those plugs like WICKEDLY EXPENSIVE?! Like some outrageous prices?

 

I'm not for sure but i heard these iridium plugs run hotter than normal plugs ... please correct me if i'm wrong.

 

Installed a set Of Denso iridium plugs in my '89 TII ($50.00) the only time I've installed something different than the NGK since it was new. No noticeable increase in performance, but the trailing #1 plug ceased firing in 800 miles. Replaced with NGK no problems.

 

I would not buy those. The spark plug that you use depends on your application and engine running temps. We use NGK 115's.

 

These plugs are good for those people who enjoy pouring money down the drain! All the rich bastards...

 

Hey All,

Perhaps there are some veterans out there that can enlighten me.

My impression was that you want a plug to provide a reliable spark. If you dont' have any or significantly many (at least) misfires, then your plugs should be doing the job. What performance improvement can you make if your plugs are firing reliably all the time?

I have been using NGK Platinums 7s and 9s, so I'm curious IF this makes a difference, and if it does, how SIGNIFICANT is the difference? Is it worth the coin..?

Thanks...

/F/

 

It depends on your application. High power engines require high power spark beacause high cylinder pressures affect the spark generated and can actually blow out the spark. In a mild street car there's probably not alot to be gained if your stock system is in good shape. If you have plenty of airflow but a weak spark, you won't make much power.
Rotaries do like a nice strong spark. If you look at the spark plug holes on the inside of a rotor housing you'll understand why. The spark is actually recessed away from the chamber, unlike a piston engine where the spark is right in the chamber.
BTW, I've heard/read in several places that platinum (not iridium) plugs actually don't perform quite as well as regular plugs. Manufacturers specify them because they last 100,000km, not because of their performance.

 

Anyone know the price per plug for the iridiums?

/F/

 

Damnit, who voted on this thing!

These things cost at least $30 per plug!



-Ted

 

good grief, to think i coulda bought those for 30 bucks...and i just bought 2 sets of 4 new NGK's off of ebay for 29 bucks :P

 

What heat range plugs are you running? Maybe if you changed the rating of plug they would last longer. If you are running HKS plugs then they will not last no matter what you do.

 

Amen to that!


RM

 

HOLY $HIT !!!!!!!!!!

 

In the case with an Ignition Box, Crane Cams to be exact, would the benifits, If any, be better running
Iridium spark plugs ? Just wondering.