Jovan Caro

gonna change out my spark plugs which is a good plug to go with I'm running a DIY cop kit

llDemonll

iTrader: (21)

evo 8 or 9? either way, factory plugs gapped @ .020"

Jovan Caro

It's a evo 8 was thinking of going with ngk iridium

Evo_Goodness

Simple copper plugs i went with one step colder so I think ngk BPR8ES gapped at .22 with no issues I also do my plugs every oil change as it only takes me like 15 minutes and there like $8 for a set of 4....
My dad who has been building motors for years has always claimed nothing is better then a standard copper plug to conduct electricity and going by text books he's right lol

Ferp

I run the copper BPR8ES gapped in the low .20's as well. Car makes low 300 whp range. I change the plugs probably every second oil change, sometimes earlier. They're very cheap and the peace of mind of them constantly being pretty new is comforting for me.

Klaiceps

iTrader: (18)

Anyone have experience with Brisk silver spark plugs? Supposedly they are better than copper plugs in terms of conductivity.

Evo_Goodness

Nothing going is better then copper science 101 maybe gold but ya who's buying gold spark plugs

Bhsj13

NGK BR8ES @ .018 and it is great. i change them out every 3-5k miles.

4b11slayer

Copper ngk.
Bpr7es pump gas
Bpr8es e85 0.21 gap.
I change plugs like oil filters.

RightSaid fred

Tell your dad that copper plugs require more voltage to fire across the same gap than a proper plug with a sharp point.
Proper plugs (platinum or iridium) with sharp points last over 100,000 miles....don't need changing.

Evo_Goodness

Ya but when I can get copper plugs for $8 and something that literally takes me 10 minutes to do with each oil change why not peace of mind knowing there done every 2500/3000 miles

llDemonll

iTrader: (21)

because it's way overkill and unnecessary? and it's way more expensive in the long run

if you bought iridium plugs @ $50 a set and changed them every 25000/30000 miles you're spending $50 for 25000/30000 miles. if you buy copper plugs @ $8 a set and change them every 2500/3000 miles you're spending $80 for the same mileage. Not to mention that iridium plugs will go much further than 25000-30000 miles

yea copper are cheap, but if you have to change them that often then they're not really that cheap

heel2toe

iTrader: (41)

^This!

I also agree the economics are in favor of going with iridium. And not for nothing but my car prefers the iridium plugs. OP if youre car has mild bolts I'd recommend a set of BPR7EIX and call it a day. I'd gap them as large as you can. Personally I run a gap .025 with my Spoolinup COP setup. If youre getting spark blowout then close the gap.

And what piece of mind are you getting by changing plugs every 3k? When my plugs go bad I know it bc my car gets pissed and I swap them out. If my car is happy then Im happy and I see no reason to get rid of them. Just my .02

Evo_Goodness

Piece of mind because I had a plug eat my STI head it was a iridium plug because well doing Subaru spark plugs blow a load to do so I always used iridium but it was a mess and destroyed my BC cams on the drivers side mind you it wasn't the fault of the install it was just a faulty plug that lasted like 300 miles but it cost me 1400 to fix before it was all said and done

llDemonll

iTrader: (21)

ok but that could happen to any plug...