Spark Plug Questions?

[Eatan8]

Hey Guys

Just a few questions about what spark plugs I should use in my rb25det, I was having some misfire problems with my car a while back which turned out to be my plugs. I took it 2 three different places with the last the only 1 that made an improvment to the prob it now has ngk iridium plugs with heat range of 7 and i got told 2 put 6's in if the car misfired again which it is starting to do now so are the iridum plugs worth it and if so does any1 know the part no for the 6's and what i should gap them at.

Cheers Brad

[shy_s6]

gap them down to .7 this completely got rid of my missfire issues on my rb25 back in the day, or get hks power booster n splitfire coils

[Eatan8]

Thanks for the imput

Yea i already have the splitfires and never heard of the power booster.

Thanks

[sinistaGTR]

um i use ngk copper ones ($4 a pop) and gap them to .7 no worries

[salad]

Use BCPR6ES. They're coppers and ~$4 as sinista has said. They're pre-gapped to 0.8mm and this works well.

Just change the plugs every second service and you'll be fine

[Eatan8]

Thanks guys I will try the coppers and see how she goes.

Cheers.

[Advent34]

anyone know where i can get some BKR6E or BCPR6E spark plugs? some place that should have them in stock?

would like to know where you guys got yours. i have very little time to check around when i finish work.

cheers,

-dave

[Cubes]

I get my copper ngk's from Motor Traders. ~$2.80 each.

I usually swap them out around 10,000-20,000km's but have manged to pull 30,000km's out of them before they actually started to look worn. 20,000km the gap starts to open up, 30,000km's the electrode etc starts to round off.

[heslo]

I go coppers myself also, find them the best and usually change them every 2nd service. Every 3rd if I get lazy

[Ryanrb25]

yea coppers...nothing special...gap to .7 as mentioned...good for ages.

[Cubes]

How is your idle with a .7 gap?

I find 0.9 is silky smooth where as .8 to .7 has the occasional little pop and .6 simply has a crap idle.

[salad]

Yeah, I've noticed my idle is pretty average with 0.8mm, but no misfires at all high in the revs, so that's good enough for me. Dont have to mess with the plugs, buy em and whack em straight in.

[DRFT33]

have u tried adjusting your timing? i did and it fixed my high rev misfire.

[sinistaGTR]

How is your idle with a .7 gap?

I find 0.9 is silky smooth where as .8 to .7 has the occasional little pop and .6 simply has a crap idle.

Lol mine are gapped to .5 and no idle issues

[Cubes]

Lol mine are gapped to .5 and no idle issues

What rpm does it idle at?

I have mine idling at the usual 650rpm.

So absolutely not 1 single little almost not noticable pop on idle?

[sinistaGTR]

i have mine idle at the 800-900 mark, we had to gap it that low cause of the coilpacks missing hardcore.

[Cubes]

The high idle will mask the idle pop.

--

When you ramping the boost up?

[Deluxe]

Just bought brand new Irridums today....... $20 a pop, Gapped them down to .6-.7 ready for my tune on Saturday! My last set lasted me about 5 services, all good as well!

[sinistaGTR]

The high idle will mask the idle pop.

--

When you ramping the boost up?

Yeh i have to have it that high cause the turbulence with the Q45afm,

and i bought a set of splitfires off here and they havent arrived in two weeks, so trying to get my money back soon as i have done that i will get another set and then i am goin to put the boost up lol.

[Advent34]

<br />Yeh i have to have it that high cause the turbulence with the Q45afm,<br /><br />and i bought a set of splitfires off here and they havent arrived in two weeks, so trying to get my money back soon as i have done that i will get another set and then i am goin to put the boost up lol.<br />

<br /><br /><br />

who did you buy the coils from? i've bought mine off the site and it hasn't arrived yet too.