Bobby_Budds

I have a GT30r'd B18c1. When tuning my tuner gapped a set of NGK BKR7E's for me. I have a new set of the same spark plugs and I'm unsure what to set the gap at. I figured this would be the place to ask.

Gunmetal_B20_Hatch

iTrader: (9)

start at .030"

but why not call and ask your tuner himself????

Spawne32

iTrader: (3)

i started with BCPR7ES-11 and ive gone through 2 sets already within a year and a half, nothing but troubles with rough idle, so im going with ZFR6FGP which is one range colder GPOWER platinum's for the b18b. I know theres alot of hype about platinum and boost not mixing but you have to really read the details. These plugs should work better then the coppers and last longer, we will see at the end of the week.

pcguy760

Hey I used BKR7E on my current build and yeah it does idle a little rough .... so what are those ZFR ones? Iridium? (Dont feel like searching now lol)

Spawne32

iTrader: (3)

the ZFR6FGP is one heat range colder then what the part number is for the OEM gpower platinum plugs are, which would be ZFR5FGP, denso conversion numbers are...

CROSS REFERENCE DENSO K22PR-U11 (STANDARD) IK22 (IRIDIUM)

EsotericImage

iTrader: (8)

I use NGK 4091's gapped to 30 and been fine.

yzracer323

iTrader: (3)

why not measure the gap on your old plugs? you should get a good idea as long as they arent incredibly worn

rich7777

I run NGK R5671A-7 for street use and R5671A-8 for track (non resistor plugs). There both gapped down to .5mm. My idle is pretty smooth and they seem to last ages.

Bobby_Budds

I've been having a hard time getting a hold of him. I know he's very busy and I don't want to bug him. Figured this plug was a common plug used for turbo hondas so I thought someone here would know.

hamma-head

bkr8exi orielly part number is 2668 .. gap around 20 depending on your boost lvl

radam

What this guy said. Get a gapping tool and just measure the old plugs and then replicate with the new plugs.

frogg5872

I know my setup has to use resistor style plugs which would be the bkr7e. Mine is gapped at .22 anything higher wont hold boost over 1 bar

pcguy760

Mine are gapped at .25 (bkr7e) even with the full MSD ignition that was as high I could go.

2'z kuztoms

Gap mines around .20-.22

Muckman

iTrader: (2)

I run NGK 4554's at .025
At around 350hp I had ignition breakup with the gap at .030"

Bobby_Budds

In case anyone cares he told me to gap them at .024 =D

racebum

eh?

ngk goes colder the higher the number, a 6 would be hotter than a 7 etc

Spawne32

iTrader: (3)

exactly, i only wanted one heat range colder, not 2, 6 is factory on the vtec heads, 5 is factory on non vtec motors, the plugs are perfect now that they are 6's instead of 7s for the amount of mods i have. OP is actually using a b18c1 so nevermind what i said lol

AlexDphoto

.025

DDTECH

You want to run the WIDEST gap possible, without blowing spark. Alot goes into choosing heat range..

People that dont know, just generally classify the case. You can have a bone stock gsr on 12lbs want 8's...on the other hand you can bone stock GSR on 12lbs want 6's.. you need to learn how to read plugs correctly.

For boosted setups start @ .032 and gap down as needed.. MOST of the time, cars boosting under 12-15lbs will like .025-.032, it just depends.

dcintegra94

i'm using spark plugs from a 90's saab turbo..............6282 gapped to .28.........runs fine under boost

dcintegra94

11 psi...........ebay turbo.........e85

grumblemarc

iTrader: (4)

Why? So what? And why did you bump this post just to say that?

wantboost

iTrader: (2)

Ugh ******* newbs, stop bumping older than **** threads.

maplemaf

.025