Spark Plugs

[MANWHOR3]

I have searched for previous threads, but have not found an answer to this quesiton. I know tha everyone has different views about copper/platinum/iridium. Personally, i believe in using coppers, and changing them frequenty.

My question is to do with the gapping. Stock gapping is 1.1mm. yet, when running stock boost, i tend to get misfire. Plugs have not been changed ever since i've got the car (probably 15000 ks). Should I get plugs gapped at 1.1mm? (car is running stock boost, just zorst and air filter). i've noticed that some of you guys run 0.8 or 0.7. is this only if you run more boost? like would it be beneficial to run 0.8 mm even at stock boost?

Is regapping plugs bad? i've got a feeler gauge and i was wondering if it is ok to just regap them and put them back in after a clean? or should I just buy new ones?

[Craved]

if your using coppers then it is fine to regap them, only issue is with platinum is the coating cracks off if gap is changed! i use .8 with same mods as you!!

[MANWHORE]

what is the heat rating of a spark plug?

I pulled my cover plugs out, haven't been changed for 20000 ks. They are all dirty and gapped at 1.4 mm.

I was thinking about just buying some new ngk plugs. How do i decide which heat rating to get, and what would be the difference between a 1.1m and a 0.8 m gap? stock boost, just zorst and airfilter

[rb25]

my 33 would mis-fire when it had only an exhaust and pod and no boost. used 6 heat range coppers gapped to 0.8 and it solved all my problems. i think the 0.8 gapped ngk copper is bcpr6es (dont get bcpr6es-11 - 1.1gap).

-rb25

[Damo]

my 33 would mis-fire when it had only an exhaust and pod and no boost. used 6 heat range coppers gapped to 0.8 and it solved all my problems. i think the 0.8 gapped ngk copper is bcpr6es (dont get bcpr6es-11 - 1.1gap).

-rb25

U can get the bcpr6es-11 which are already gapped to 1.1mm and simply tap them in a bit to whatever u desire with the use of feeler gauges.

[Damo]

what is the heat rating of a spark plug?  

I pulled my cover plugs out, haven't been changed for 20000 ks. They are all dirty and gapped at 1.4 mm.  

I was thinking about just buying some new ngk plugs. How do i decide which heat rating to get, and what would be the difference between a 1.1m and a 0.8 m gap? stock boost, just zorst and airfilter

are they gapped to 1.4 or worn to 1.4? i would be fixing that asap, u will notice a big difference. Nissan recommends heat range 5 but most people say to use 1 range higher for a certain hp increase from stock.

[Busky2k]

Definitely close them down to 0.9mm or 0.8mm as suggested. You shouldnt have any problems then!

[rb25]

U can get the bcpr6es-11 which are already gapped to 1.1mm and simply tap them in a bit to whatever u desire with the use of feeler gauges.

why would you do that? just get the 0.8's.

-rb25

[Damo]

The store where i bought my plugs did not have the .8mm gap

[nitemare5]

the ngk bcpr6es @ 0.8mm are the way to go.

[JAPCAB]

I use NGK BCPR7ES @ 0.8mm

the ngk bcpr6es @ 0.8mm are the way to go.

[NINOBROWN]

SHIFT PERFORMANCE stock NGK laser platinum, NGK-R Iridium IX, Iritop 7, Iriway 7

[WazR32GTSt]

you can buy BCPR6ES from supercheap @ 3.99 each...

[shark33]

Hey ive had my 32 for about a month or so i dont think the spark plugs have been changed, im all new to this, after just reading all the posts it still doesnt make sense. Im runnig 10 psi on it exhaust, SAFC 2 cold air intake and dump pipe from turbo, and i think i should change the spark plugs for peace of mind does anyone know what sought i should get copper/irridium/?

What gapping should i have and stuff like that. It's for an R32 GTS-T.

Car approx has 86,500kms on the clock.

[rb25]

shark33: my theories are as follows:

a car with standard ecu runs rich and fouls plugs quickly. in this case, use copper plugs and change regularly. now a car with a tuned ecu or safc or the like will run leaner afr's so plugs dont foul as fast and you dont have to change them as often.

So If i was using a standard ecu id use coppers, any aftermarket ecu or piggyback, id be looking at platinums or iridiums. I have recently gone from coppers 6 heat to platinums 7 heat after putting a powerfc in.

-rb25

[rb25]

SHIFT PERFORMANCE stock NGK laser platinum, NGK-R Iridium IX, Iritop 7, Iriway 7

lol. do you work for this shop or something? anyone can get those plugs anywhere, anytime.

-rb25

[shark33]

thanks bud, sorry to pick you brain ive also got a 90,000 km service coming up in a few months do you what needs to be changed i know im only at 86-87km.

[mindflux]

I just changed my spark plugs..

I went from PFR5A-11..

and put a set of BCPR6ES in my stock r32 gtst (115 on the clock)

I cant rememebr what the gapping is of these, but it did not have the '11" on the box, which means that its either 1.1 or 0.9 i think the guy at repco explained.

Dont seem to be missing as far as im aware?