What Sparkplugs For R33.

[joe blo]

what sparkplugs shud i use for my r33 turbo? i got a big flatspot also. could it be the plugs? its got splitfire coils in it . im hoping its the sparkplugs

[charlie25T]

how do u know it is a flatspot

[joe blo]

can feel it

[charlie25T]

well apartenly Oem coil pack with platimum plugs set to 0.8 should be enough

[SECURITY]

flat spot is usually coil packs

gap the sparkies you have in there to .65 to .7 and see how you go.

BCPR6ES is the part number for copper NGK plugs (around $4 each).

[joeyjoejoejuniorshabadoo]

I'm on bcp7es and couldn't be happier

[nick81xd]

i used to use BCPR6ES-11 plugs in my 25, but i switched over to BKR7E plugs and the car runs 100% better from idle to 21psi.

[joe blo]

do the splitfire coilpacks break also? there blue ones ive got in there. they were already in the car when i got it. i assume there splitfires coz i got a splitfire box with old black ones in it and the car has blue coilpacks in it.

Edited September 30, 2007 by joe blo

[adam-__-]

If they're splitfires, they should say 'splitfire' somewhere on the coils.

Try gapping your plugs and if nothing changes, it's probably your coils.

[joeyjoejoejuniorshabadoo]

i assume there splitfires coz i got a splitfire box with old black ones in it and the car has blue coilpacks in it.

i concur

[swanny180]

Have you had a look at the type, gap and condition of the current plugs yet mate?

Not much point in asking what plugs you should be using or if its the plugs causing a flatspot without finding those details out first

[MMM]

atm i got NGK BKR6EIX-11 gapped to .8

i did have NGK BCPR6ES-11

either of those will be good for ya

[philta]

how the hell did u manage to regap your iridium plugs???

[MMM]

hit them against something with the feeler gauge in between to get .8

[adam-__-]

It's a bit risky gapping iridium plugs, but they can be done successfully. I can't remember for sure whether it was iridium or platinum plugs you shouldn't regap. It can be done, but you could stuff them up.

[dori34]

BKR7E

using the standard plugs that nissan recommends will make the car misfire/pop. (i think 1.1mm gap)

[joe blo]

ive read on here that there are some plugs that are already gapped to .8 when you buy them. does anyone know the part number?

[adam-__-]

It's the one without the '11' in the part code as far as I know.

[mad082]

try going to a smaller gap before you go a colder plug. you may have a 1.1mm gap, or they may be 0.8mm plugs that are worn and the gap is now bigger than 0.8mm. pull the old plugs out and have a look at the code on them, as well as check the gap with a feeler gauge.

heat range 7 plugs are rather cold. if you are running huge amounts off boost then you can get away with it but if it is standard boost, or standard computer you may foul plugs quickly as they may not be be burning all of the fuel.

ideally you want to run as hot plugs as you can with as big of a gap that you can. this gives you the best burn.