idea spark plug gap.

[leesredgt]

ok im fixing to go buy new plugs and was wondering what the idea gap was for a rb25det.Ive searched but there are so many diffrent opions and answers.Some say the stock gap is 35 or 37 but that is considered to high and that somthing lower is prefered,but from there on out it seems to be up to personal prefrence. So im asking what is the common gap that everyone runs on a stock rb that will not be boosted past 12psi for awhile if at all.

[Darius]

95% of people run 0.8mm=0.0315"

[MoogLe]

i'm running 0.8mm gap, heatrange 6 @ +/- 12 psi with a GT2540 turbo

[leesredgt]

ok i just ordered the ngk-bcpr6es do those come pre gaped b/c he didnt ask or anything so, i have to go pick them up in the morning and was wondering if im gonna need to buy a gaping tool to redo them myself.

[Darius]

My special gapping tool is the top of my wooden work bench

[neonbomb]

I stole one of those little keychain things from an autoparts store with the gap widths on the outside diameter. I love free!

[mello88]

I stole one of those little keychain things from an autoparts store with the gap widths on the outside diameter. I love free!

That's what I have too. But I think I actually paid the $.99 or whatever they charge for it LOL. As much business as I've given them in the last 3 years it should have been free! LOL...

[rb25drag]

yes man you really need a Gap tool. It will come in handy for many years to come.

I have found at 15PSI mine like the plug gap at .022.

But I also run a AcDelco plug.

[gawdzilla]

ok i just ordered the ngk-bcpr6es do those come pre gaped b/c he didnt ask or anything so, i have to go pick them up in the morning and was wondering if im gonna need to buy a gaping tool to redo them myself.

those plugs that you got are ungapped. the gapped ones will have a "-11" at the end of the name, like bcpr6es-11, meaning 1.1mm gap.

however, ngk ungapped plugs are about .8mm if you check them. get a tool to double check and adjust as necessary

[leesredgt]

yeap ur right, i just went and got them and a tool and checked them there all pretty much .8 mm.

[HxC_Nismo]

i run .025"-.026" on my rb

[havik420]

just changed plugs, old ones were 1.1 and auto lights and i put in BCPR6ES AT .8 and car doesnt know how to run right haha, idles fine, but when i get on it build of full boost and let off it dies i guess i will gap them to 1.1 tommorow and try my luck

[ST240]

those plugs that you got are ungapped. the gapped ones will have a "-11" at the end of the name, like bcpr6es-11, meaning 1.1mm gap.

however, ngk ungapped plugs are about .8mm if you check them. get a tool to double check and adjust as necessary

Oh? Lol. Gotta love ignorance. I could have sworn I bought bcpr6es-11 and gapped them to 0.8? Hahahha. whatever I did it worked like a dream.

[meet07]

0.7 here at 12-14psi.

Part number is 3330 NGK coppers. I wanna say they come out of a saab 2000 or something...older one around the 1990's

oh yeah there a few steps cooler too.