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Spark Plugs?

mindflux
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mindflux Mentor

mindflux

Posted
Posted

Hey,

Ive got a few concerns about my R32 Gts-t.

First of all, im unsure but I think my Spark Plugs are due for a change. The reason I say that is due to me having a few starting issues after the car has been sitting in the garage over night. But Ill get to that in a minute.

Sp back to the spark plugs, My Car is a standard R32 gts-t. I belive im running stock boost (havnt checked) and im guessing everything else is pretty standared.

The car apparently had its 100,000k service and im lead to belive this was done at 106,000 .. im unsure if EVERYHTING was changed in this service, but im 99% sure the timing belts were done as they look new, and im guessing the Spark Plugs were changed at this time.

The car now has about 115,000 on the clock, and I have serviced it twice during that time, (Last service was done at 114,500 and that inculded just an oil and oil filter change)

So im guessing the spark plugs are due for a change as they would have posibly been in the car for 10,000k's if they were changed in the service done at 106,000.

Now with that all aside, im unsure what plugs are best for my car, keep in mind that im apparently running stock turbo and boost.

Now ive been doing some looking all accross the forum and i've heard all different comments on which plugs to run, and i've basically come up with these options.

* Ngk PFR6A

* Ngk PFR5A (NGK platinum)

* Ngk BCPR5E or (BCRP5E-11) --- Apparenly good If i drive like a grandma.

* Ngk BCPR6ES --- Possibly the most common suggested?

However rb20det.net says...

* Ngk Standard PFR5A-11 (1.1mm gapped)

* Ngk Iridium plugs T7341T-8 (0.8mm gapped)

So with all these options, im feeling a little lost.. and especially when talking about gapping plugs!.

I was originally thinking the "Ngk BCPR6ES" sounded to be the one that standard out the most, however lets be honest. I do give the car a bit of a hit every now and then. Well ok maybe more like once a day :D

So what im askign is, with ALL the information provided, which do you think woulds the most suitable for my car.?

Thanks in advanced.

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strutto Grand Master

strutto

Posted
Posted

BCPR6ES are a great plug for the price ($3)... They will suit standard boost fine and will take the occasional thrashing... You may possibly be able to run the standard 1.1mm gap depending on the health of your coils and the boost pressure your using...

The PFR*A's will work fine but are a platinum plug so budget around $20 per plug... The advantage is they will last up to 100,000 k's as opposed to the BCPR's which are copper and should be changed every 10,000 - 15,000 k's...

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Busky2k Veteran

Busky2k

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Another vote for the BCPR6ES. However the NGK V-Power (Grooved electrode) are arguably the best plug they make, and its usully the same price. Code number? BCPR6E or BKR6E is your poison!

I dont think spending the extra on plats/iridiums are justified IMO. One tank of octane booster etc ruins em! Dont get the 5 heat range plugs. Not needed. Stick with 6 as suggested.

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mindflux Mentor

mindflux

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Hmm so it sounds like i was on the right track..

Yeah i was going to stick with the copper plugs.

This V grooved model.. why is it better then the other model?

which also leads me to my next question, how do i know what gapping i have to run.

I know nothing about gapping plugs..

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Busky2k Veteran

Busky2k

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riceline, stock heat range is 6. 5 is a 'hotter plug', and you use this if your 6 range is prone to fouling, but it shouldnt under normal driving conditions. So I dont know why anyone would go to 5 unless somethins wrong. People like to go one step colder (7) like I have once the mods start compounding up. NGK say that you go one step colder for every extra 60hp you add to a motor. But I think 7s is good enough for most modded cars, 8s for cars with _alot_ of power. All it does is make sure the plug dont overheat under lots of boost become a potential source of detonation. More info on NGK's site.

V-Grooved models seem to have better ignitability. I could run bigger gaps w/o misfire with V-Power plugs compared to Platinums but your mileage may vary. They're cheap and you cant go wrong.

If you're completely stock, just stick to stock gapping which I believe is 1.1mm. Otherwise close it down to 0.9mm if you have misfiring problems.

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mindflux Mentor

mindflux

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Cool thanks for that..

Im 99% sure im pretty stock, sapart from what appears to be a factory upgraded exhaust. Im not sure what turbo i have on it or what pound im running. but to me im strongly guessing its stock.

So in the end I think the 2 plugs that stand out the best are..

* BCPR6ES

* NGK V-Power

And from what you are saying, the the V-power (V-Grooved) is the same as the BCPR6ES, however it is slighly better because it contans this V-Grooved Technology, which allows you to run bigger gaps.??

Now speaking of Gaps, I have no idea about them, how they work or what. So any information about this and how to do it would be really help full.

Thanks for your support so far..

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mindflux Mentor

mindflux

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Pistol Pete - Thanks for that .. Im going to get my mate to help me when I change my plugs as he has done it a few times this month on his Cars, I personally have never changed plugs on a skyline let alone gapped any of them. Thanks for thinfo (that goes to everyone)

I think i might take a shot at it tommorow and i'll let you know how i go.

Adrian - Thank you

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