LScowboyLS

OK, I sprung for the baddest spark plugs on the planet - the legendary Denso IK20's

but is Seafoaming gonna foul these puppies and their world's smallest electrode??

and what about Seafoam's effect on a cat or an O2 sensor?

RA40

iTrader: (6)

Technically it shouldn't but if concerned, plug in some cheap ones.

PureDrifter

iTrader: (10)

lol plug type makes literally no difference in how your car drives. platinum/iridium plugs are only beneficial in terms of service life, nothing else.

Personally I run copper plugs (NGK V-Power) as they produce a better spark and i don't mind changing them on the LS (it's SO EASY!!!) every 20-30k miles.

seafoam through the intake isnt kind on plugs though.

LScowboyLS

Dude - you have got to come up to the world of the Denso IK series, if only for the gas mileage alone!

Nothing produces the ignitability like Iridium at 0,4mm

you had better read up on the technical side - are you some old man who is resisting the better plugs, better lubricants and better automotive engineering we have now?

c'mon grandpa - get with it!

PureDrifter

iTrader: (10)

I graduated college in June.....

and it's a simple issue. copper has better conductivity than platinum or iridium, therefore produces a slightly better spark. the only benefit to precious metal plugs is service life. if you look back the reason they even came into widespread use was in the 80s/90s when FWD V6 cars became popular and OEMs didnt want to spec a $6-800 plug replacement every 25-30k miles. (due to labor)

also the reason why most performance tuners run copper plugs.

even Denso lists all this.
http://www.globaldenso.com/en/produc...dium/qa_7.html
melting point is irrelevant as the surfaces of the combustion chamber don't go anywhere near those temperatures. and the resistance of iridium is listed as being several times higher than that of copper.

LScowboyLS

I really don't think you fully read that Denso technical sheet I linked to in its entirety. The engineers at Denso (who know more about plugs than anyone, that's why motorcycle racers use them) have determined that electrode size is the most important factor, for the reasons that they explain (some of which are near the bottom of the page)

Just saying "copper is better" on the basis of its conductivity is kinda leaving out a whole lot of factors in spark plug design!

And by the way, these particular plugs I am referring to do not have improved service life, they are only good for 30K

They may be expensive, but gas costs over 30K are even MORE expensive, especially THESE days!

RA40

iTrader: (6)

Ok guys, the discussion is about Seafoam and potential damage to the plugs in that process. Not a spark plug debate which we already have some threads.

BobN54

A dose of Seafoam isn't going to do anything bad to your sparkplugs. Denso would warn against solvent cleaning if it was a concern.

RamAirRckt

I've used GM X66P and X66A for years, which is all Seafoam is, and never ever seen a single issue with it fouling plugs. The whole idea or X66 or Seafoam is to clean it up in there, not muck it up.

Seafoam Deep Creep is same as X66A (Aerosol) and is same as the pour stuff, just in a aerosol can. So you can spray in vs pour or use a vacuum hose to get it in the engine. This works best on engines without a throttle body that is vertical (few have, I think the L30 and L31 and Vortec 4300 from GM are only ones that come to mind that are vertical.

sethjon

I guess I'm an old guy too and if you really think Iridium plugs are any better than the rest, aside from longevity, I have some prime real estate in the swamp for you cheap. The double patinum are more than enough and in all probability you won't keep the car long enough to warrant Iridiums

RA40

iTrader: (6)

We've discussed that the Seafoam should not pose a problem to plugs. This is not a discussion on spark plug electrodes, which is better or not. There are plug threads already discussing such merits. Please reference those threads for further discussion. Thanks.

Closed.