What do you guys suggest...I've already decieded to go with iridium plugs, but I was wondering which brand....NGK or Denso


03 Ecotec

Well unless your using Forced induction or nitro, i would use the stock plugs.


Fact 1:


“Facts are meaningless. You could use facts to prove anything that’s even remotely
true.

just stick with your stock plugs



Im a Xbox 360 fanboy...and damn proud of it!!

Not to jack the post here but how many km/time should the plug be good?

I got 85000 kms and wondering if i will do them this summer along with other things.




zouiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
-What's that noise?
-nutting, it's just my neighbour racing can (read civic).

i think your supposed to change them every 20,000 miles under normal coditions



Im a Xbox 360 fanboy...and damn proud of it!!

i forget how often they say for the eco
is it 50k or 100k?
dont remember and to lazy to look at the moment

Its 100k for the ecotecs. I am planning on forced induction in the near future, but the iridium plugs just work best with forced induction and nitro. They are however, better plugs than our stock platinums. I'm looking to try a few different types before I finish building my engine so I know what is best. I was just wondering if NGK or Denso has the better plugs. I drive a lot and don't think my stock plugs will last to 100k....I'm already at 60k and I drive an 03.


03 Ecotec

i use the NGK Iridium plugs for my car. and i run n20 now



Im a Xbox 360 fanboy...and damn proud of it!!

Well,
The Densos have the smalles mm electrode.
Something insane like 4mm or something.
And NGKs are like 7mm. Still tiny.

The Densos put a 'U' grove in the 'hook' contact part of the plug.
Sorry I don't know the proper terminology.

I picked up a factory replacement set of NGKs,(TR55IX) cause the shop had the price listed wrong so they were cheaper than factory Delcos.
Haven't installed them, but they come pre gapped so I"ll try them sooner or later.

Still though, everyone is going with TR6.
Hhmmmm,

-M



Remember....syringes go in the RED waste basket.

Is there any advantage to plugs that have 2 or 4 'hooks' opposed to one?

Soory I dont know the big words either when it comes to plugs.


 
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SandStorm-J wrote:Is there any advantage to plugs that have 2 or 4 'hooks' opposed to one?

Soory I dont know the big words either when it comes to plugs.

No, it's just a gimmic to sell the plugs. The theory is that the produce multiple flame fronts(which they do) during the combustion process, creating a more efficiant burn. Unfortunately the multiple electrodes also shroud the flame front, which negates the adavtage they are trying to create. This is even more pronounced on the +4 plugs.

stock are fine. I went from stock to Bosch 4 (garbage) to Bosch Single to GM Supercharger plugs. Now i am back to stock and my car is running much better and smoother. I had no gain from any plug i was looking to have a smoother idle etc.

Just stick with stock.


2004 Grand Prix GTP (Competition Group)
SOLD-->1999 Z24 5M-#30 to register on JBO
"You can please some of the people some of the time but you can't please all the people'
all the time

I have NGK plugs but never installed them yet

i got bosh platinum @!#$.. most expensive stuff i found at a local automotive store.. and my car started running worse.

I replaced it recently with ACDELCO stock plugs ( more expensive then the other ones) 11$ CAN/plug and my car has been running better then ever.



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what are the stock plugs? Bosch what?

Standard replacement Copper Core plug = 25 - 50K KMS
Standard replacement Platinum Plug = 100-120K KMS
Standard replacement Iridium Plug = 160-180K KMS

Copper Core is the one to use for boost/nitrous, plats are alright for boost but if you foul a plug they are junk, iridiums are for the grandmas that never take care of there car, never beat on it, and never want to touch another plug again.


_______________________
** Flat Broke Racing Inc.**

There is no part number for IRIDIUM plugs in either DENSO or NGK for the ECOTEC. If you can find one, let me know, I called a bunch of places locally, they just don't make them for the ecotec.

Yes, does anyone have the part number for the oem acdelco plugs that everyone says are great? I run +4s now, and my car has a lumpy lumpy lumpy idle..heheheh..If it makes a diff, I have a 96 2.2l. Anyone know the acdelco plug number for this engine?




...don't hate!.. respect people that have talent, even if it is in something you don't like or understand.

go to autozone and ask. it's gotta be the ac delco platinum professional.

These are the plugs I got

The NGK plugs are great and cheaper than Denso.

How hard is it to change the plugs in 2000, Z24, 2.4?

not hard at all dave. all you need is to take the cover that says 2.4 twin cam on it. they are under that



Im a Xbox 360 fanboy...and damn proud of it!!

some one needs to make a spark plug sticky, these questions have be asked dozens of times. If wanted i could try to find AC numbers I have alldata but I don't have any numbers for NGK or denso.




1979 Impala Sport Coupe Aeroback

^^^ what range of years too.




1979 Impala Sport Coupe Aeroback