zlancer

iTrader: (1)

hey...i'm just wondering whats the best spark plug to use on my turbo OZ Lancer. I'm not too sure about heat ranges lol even tho i know about everything else. i guess i need to do some more research. but part #'s and brands would help alot thanx!!

Pimpson

Denso or NGK. Not sure what the differences are if any, but I too would like to see the part #

pjal84

The DSM guys always use copper plugs. Forget why but I'll look into it. I think they run colder to avoid detonation issues...could be (probably) wrong though.

3K

iTrader: (9)

You should go a heat range or two colder than your stock plugs.

Check to see if your stock plug # comes in a colder range. If it doesn't then you will have to cross reference for one that is compatible.

But you'll want too make sure the electrode isn't too long or you'll hit the piston tops.

I'm assuming your stock plugs are probably a heat range five, you'll want to go with a heat range seven.

You don't really want to go any colder than that for a street car because you'll have fouling problems if you do.

Unless of course your running INSANE amounts of BOOST!

zlancer

iTrader: (1)

thanx for the fast responses...i was also told by my DSM friends where i live to use copper plugs and to go 2 heat ranges colder also. pjal if you colud find info about why the copper plugs are better that would be great. thanx again.

ROCK

iTrader: (67)

Colder like a 7 range. We use NGK!

ROAD/RACE
http://www.roadracemotorsports.com/

bdavie

Think copper gives a better spark, only reason to use platinum is that it doesn't get corroded. You have to change copper plugs every 10k miles or so!

fatbastard555

i'm using NGK IRIway7 spark plugs. costs about $20 apiece.

zlancer

iTrader: (1)

does anybody know the model number for the stock spark plug for the US Lancer so i can get the higher heat range?

fatbastard555

i think it's BKR-6E

DaTenshi

for a turbo car use iridiums~ Denso has em for our car im not sure about the other companies.~

pjal84

Why not take the numbers from the back of the owner's manual, take 'em to your shop and ask 'em to hook you up? I did that no problem when I bought my plugs.

3K

iTrader: (9)

Or you could just take the spark plug out of your motor and look at it.

zlancer

iTrader: (1)

ok well...i jus ordered the NGK plugs # BKR7E-11 ...heat range of 7. it seems that my plugs are the same as an eclipse.

stealth-wrx

if you are running 50-100 hp more than stock go 1 step colder. if you are running more than 100 go 2 steps colder. you can also try denso iriduim plugs.