What's a better choice for spark plug NGK 7746 or 7772? iridium or platinum?

 

Factory is iridium. No reason to step down.

[Edit: ignore me, apparently i is dumb.]

 

I called Honda of lynnwood and they said go with 7772 platinum that is what the s2000 comes with.... He went on to say iridium may cause damage. This true? Anyone know for sure??

 

factory is platinum.

i ran the iridium version of the stock plugs and it was awful. even the manufacturer doesnt recommend using their plugs in our cars.

 

Honda goes 100k plug change intervals on PLATINUMS?

Whoa. I stand corrected. My mistake. Really long interval for plats. Wow.

 

Irduim is the lastest greatest!!! What was awful on the irduim? Please explain? I have NGK irduim in my car for a week and it runs great! If it's not NGK maybe I can see issues.

 

i had the NGK iridium that were the exact same heat range and everything else as the platinums. at first it felt great but after a little while they had a clear flat spot in the power band that ws no there prior to the switch. i have no notes on mileage as i drive my s2k as weekend car and dont give a crap about its gas mileage

 

LOL about the "iridium causes damage" bullshit.. People will just say anything these days

Iridium is known to have better heat-resistance and simply longer life due the hardness of the metal.. The only problem is the *cost.

Why not just use a cheap copper plug? The plats and iridiums truly last longer, but will irids last 3x longer? Will plats last twice as long for you?

I regularly check my plugs and don't pay any extra for technologies I don't need. just keepin' it simple with copper.

IMO, if you just want to put in a plug and forget about it, run the OEM NGK PFR7G-11S platinums (7772), paying $10 per and getting good life out them is all you really need. Please remember, there is zero performance gain when comparing new plugs to each other. Performance, in regards to plugs, comes from tuning heat ranges and gaps for specific applications that require it.

 

who said anything about damage? i just said i was left with an undesirable and noticeable flat spot in the power band

 

I recently replaced my plugs with the regular OEM NGK Platinums. I got them online for ~$12 each. My car is a MY00 so the plugs do last quite a while. They didn't go bad yet, but I figured I'd replace them while I replaced my Ignition coils (1 went bad).

You could get cheaper copper plugs $2-3 each, but you would probably want to stay on top of replacing them on regular intervals before they go bad. I'd personally would rather pay more and be able to forget about it for 100k/7yrs or so.