Spark plugs

[klys]

should I get NGK?

I did solve my misfire problem by regaping

[tyndago]

should I get NGK?

I did solve my misfire problem by regaping

I did have some pictures of several of the Denso plugs that have failed. Not an isolated incident. Its happened to lots of people with the Denso Iridiums.

[klys]

Ok, I'll change them...
Since i'm still having ignition problems ....

numbers mentionned above? (on page 1)

BCPR7EIX-11 are less expensive than the PFR7A-11
is there a reason?

are the platinum better than iridium?

thanks; If I'm running around 300hp at the wheels is heat range 7 overkill?
on RB22?

EDIT:well I bought BCPR6EIX-11 for 13 something each
since they didn't have the 7 in stock ..

EDIT2:humm should I have gotten the non 11mm ones???

other info :P : http://skylineowners.com/forum/showthread.php?t=13419

EDIT3: -11 are just a bit too gaped for my setup I will regap them just a bit, however the car does run pretty well with about 14 PSI (very approx)

so I would say if your running close to stock boost the 11 are okay
if not by the pregapped BCP6EIX or BCP7EIX(which are 18$) and usually not in stock

[turbo_steve]

Ok, I'm dazed and confused here. I just got spark plugs today and they won't work in my car. They are too long and too narrow, the cover won't go on if I use them. The number on them is NGK BPR7ES Stock# 4044. The ones in the car were NGK R PFR6A 11. There are alot of numbers thrown around in this post. I have a stock RB20 on stock boost. Which spark plugs should I be ordering. And would these ones I have work in a GT-R? Thanks guys,

-Steve

[klys]

BPr7 are for RB25 I think
you NEED BCPR6EIX !!

[entelijint]

I just went and bought NGK BCPR5EIX-11 iridium plugs from Partsource (on sale this month) for my stock RB20DET. But I have to run out right now, i'll change them hopefully tomorrow and edit this post as to the turn-out.

edit: I went with the ZEX ones instead... sorry. much better plugs for cheaper through Hardcore Performance Accessories (local shop)

[BobyYoo]

here is a good place to buy spark plugs in canada. You get 5% by clicking on refer a friend.

http://clubplug.net/canada/

the reason why iridium is cheaper, is because of marketing, they want to push everyone to buy iridium.
Iridium should last longer than platinum though

[sushtsi]

My car is going to need new plugs when it gets here. Not sure if I should go one heat range or 2 colder. The car has 2530's, cams, pistons, fconv, im planning to be running around 14-17psi (assuming i can get it tuned right and it has enough fuel supply). Would this be enough to warrant a change to an 8 range spark plug? or 7?

[tyndago]

Run 8's

[sidewazegtsr]

Hi guys.

Ok based on the number's I've found here and on SAU, I had my Father N Law (who's a sales rep for Warden Automotive) pick me up some NGK copper plugs.

I number I went with were BCPR6ES and apparently NGK has changed a couple of the numbers. The plugs read BCPR6E and the stock number is now 3735. Apparently they've change the numbers in the system for some reason so I just wanted to pass this on.

Take care all.

Cheers 8)

[tyndago]

Ive never had much luck with the copper plugs.

[sidewazegtsr]

Actually I'm not 100% positive they are copper as it does'nt say but they are NGK V Power Resistor Type.

When I actually change the plugs later this week I'm gona for sure measure these against the old ones to ensure the new ones are the right ones.

If so, I'm going to gap these at 0.8mm's.

[sushtsi]

Would I be better off trying to find NGK iridium plugs in 8 range or getting HKS Iridium Spark Plugs for the RB26?

[pmdawg]

Would I be better off trying to find NGK iridium plugs in 8 range or getting HKS Iridium Spark Plugs for the RB26?

I heard Bad things about HKS Plugs. I've got a set of Greddy Iridiums 8. They are a Good plug.

[tyndago]

HKS plugs Tomei plugs are Densos. Greddy - Apex are NGK.

ONLY - that IS ONLY use NGK Iridium plugs. I have a cup on my desk of broken Denso Iridium plugs. The ceramic around the electrode breaks off and drops down in the combustion chamber.