I have a D16Y7 with Z6 head turbo. Vitara pistons, Eagle rods.
I haven't started the motor yet, looking to make 220-260whp anywhere in that range would please me.. What spark plugs do YOU guys run and what do you recommend for ME?

 

for your power. with about 7.5CR on 91 octane, bkr7e should be fine.

 

brisk 7's

 

I was thinking bkr7e's 0.28 gap

 

im not sure what you mean by that...

 

CR is your compression ratio.

 

That gap is rather large.. i would gap it at .20 -.22

I run NGK 4091's (7's)

 

a .028" gap should be fine. you only need to go smaller if you are blowing out spark. a bigger gap will give the car a better idle. also the 4091 are non-resistor. i think he would be better off with regular 4644, bkr7e like everyone else recommended.

i only run non-resistors in the 8+ heat range because they dont really have any resistor plugs that cold

 

ehh to each his own..

I change mine every 2k miles anyways.. so these work for me.

 

bkr9eix is a resistor #9 plug 2669

 

NGK iridium's are also like $10 a pop!! not to mention you cant gap them... well... you can... but chances are you will *** your iridium tip

 

Ngk 1 step colder plugs at .025 gap