R33 Gtr Spark Plugs - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

Raymond · 25th May 2010, 05:16 AM

I just bought a stock standard R33 GTR and want to know what spark plugs I should get.

SeR GTR · 25th May 2010, 04:14 PM

Actually non of the above, for my GTR I chose the NGK Iri-Top 8. It's a cold iridium NGK cold plug w/ heat range of 8. And has the GT-R plug JIS spec.

Raymond · 26th May 2010, 05:30 AM

Whats the code number for it?

SeR GTR · 26th May 2010, 08:54 AM

Don't use BKR starting NGK plugs because those are ISO spec, not JIS for the GTRs. The code for IRI-Top 8 is BCPR8EIX. Their heat ranges are from 7-9. So if it's 9 you want then the part num. is BCPR9EIX... I chose 8.

96gtrvspec · 18th December 2010, 05:02 PM

First let's address the IRI (WAY)(TOP)(MAC) series. These plugs have a 0.6mm Iridium center electrode with a tapered cut ground and are sold under the name Iriway, Iritop and Irimac throughout Japan and other select countries. In the USA and Europe these same plugs have been released under the IX iridium series and can be identified by there alphanumeric part #’s. The list below shows appropriate interchanges. Both the IRI series and the IX series are produced in the same NGK factories in Japan. They are identical in construction; the only difference is packaging and marketing.

IRI series Alphanumeric
part number

IRIMAC8 DCPR8EIX
IRIMAC9 DCPR9EIX

IRITOP7 BCPR7EIX
IRITOP8 BCPR8EIX
IRITOP9 BCPR9EIX

IRIWAY7 BKR7EIX
IRIWAY8 BKR8EIX
IRIWAY9 BKR9EIX

frostmotorsport · 28th December 2010, 06:45 PM

personally, I'd stay away from Iridiums. They caused me nothing but mis-fires on my GTR. I now run NGK PFR7A-11 gapped to 0.7 as recommended by my tuner.

AlexH · 28th December 2010, 07:02 PM

i just use whatever MGT racing fit for me...............
it's due another service soon and i want some more boost and garth will do some more mapping. im just not stoping till mark says enough is enough, were no where near that point yet so im sure ill get through some more sparkplugs before were done.
makes it much easyer when someone else does them for you

dsisco · 21st April 2011, 09:37 AM

i just use ordinary NGK copper plugs, platinum and iridium waste of money imo

MS33 · 21st April 2011, 02:37 PM

Quote:

Originally Posted by dsisco

i just use ordinary NGK copper plugs, platinum and iridium waste of money imo

Why do you think that?

tyndago · 30th August 2011, 03:34 PM

Quote:

Originally Posted by dsisco

i just use ordinary NGK copper plugs, platinum and iridium waste of money imo

I never had luck with the coppers. Could never get them to work right. I like the really expensive double fine wire, non-projector tip plugs.

Always had good luck with iridums on GT-Rs over about 5 years.

RB26DETT , RB26 Spark Plugs

GT-R Glenn · 31st August 2011, 03:00 AM

Quote:

I now run NGK PFR7A-11 gapped to 0.7

Obviously your tuner is a clever and intelligent person ....

PFR7A11 gapped to .8mm << no issues

tyndago · 31st August 2011, 03:02 AM

Quote:

Originally Posted by GT-R Glenn

Obviously your tuner is a clever and intelligent person ....

PFR7A11 gapped to .8mm << no issues

Just throwing some stuff out there. Its not always just the plug. Often there are other issues that cause problems with GT-R's.

How much power?

When was the last time the coil harness was replaced?

When was the last time the coils were replaced?

What is the condition of the spark plug boots?

GT-R Glenn · 31st August 2011, 06:45 AM

duh, reads first post
pfr6a 11 on a stock engine is perfect

frostmotorsport · 13th September 2011, 10:20 AM

Quote:

Originally Posted by GT-R Glenn

Obviously your tuner is a clever and intelligent person ....

not sure if being serious or sarcastic...

GT-R Glenn · 15th September 2011, 12:57 AM

Quote:

PFR7A11 gapped to .8mm << no issues

Is what I run, so obviously your guy is clever ....or we are both thick ... Im happy either way lol

I get confused, great minds think alike , however, fools seldomly differ ...
Not sure which is most appropriate...

View Poll Results: Which spark plugs should I get for my R33 GTR?
BKR7EIX	22	66.67%
BCPR6EIX-11	3	9.09%
PFR6A-11	8	24.24%
Voters: 33. You may not vote on this poll

25th May 2010, 05:16 AM	#1 (permalink)
Raymond Raymond is unaware they can edit their status GTR Register User Join Date: May 2010 Posts: 19	R33 Gtr Spark Plugs I just bought a stock standard R33 GTR and want to know what spark plugs I should get. __________________

25th May 2010, 04:14 PM	#2 (permalink)
SeR GTR SeR GTR is unaware they can edit their status GTR Register User Join Date: Jul 2009 Posts: 248	Actually non of the above, for my GTR I chose the NGK Iri-Top 8. It's a cold iridium NGK cold plug w/ heat range of 8. And has the GT-R plug JIS spec. __________________

26th May 2010, 05:30 AM	#3 (permalink)
Raymond Raymond is unaware they can edit their status GTR Register User Join Date: May 2010 Posts: 19	Whats the code number for it? __________________

26th May 2010, 08:54 AM	#4 (permalink)
SeR GTR SeR GTR is unaware they can edit their status GTR Register User Join Date: Jul 2009 Posts: 248	Don't use BKR starting NGK plugs because those are ISO spec, not JIS for the GTRs. The code for IRI-Top 8 is BCPR8EIX. Their heat ranges are from 7-9. So if it's 9 you want then the part num. is BCPR9EIX... I chose 8. __________________

18th December 2010, 05:02 PM	#5 (permalink)
96gtrvspec 96gtrvspec is unaware they can edit their status GTR Register Member Join Date: Dec 2010 Location: lakenheath Posts: 8	First let's address the IRI (WAY)(TOP)(MAC) series. These plugs have a 0.6mm Iridium center electrode with a tapered cut ground and are sold under the name Iriway, Iritop and Irimac throughout Japan and other select countries. In the USA and Europe these same plugs have been released under the IX iridium series and can be identified by there alphanumeric part #’s. The list below shows appropriate interchanges. Both the IRI series and the IX series are produced in the same NGK factories in Japan. They are identical in construction; the only difference is packaging and marketing. IRI series Alphanumeric part number IRIMAC8 DCPR8EIX IRIMAC9 DCPR9EIX IRITOP7 BCPR7EIX IRITOP8 BCPR8EIX IRITOP9 BCPR9EIX IRIWAY7 BKR7EIX IRIWAY8 BKR8EIX IRIWAY9 BKR9EIX __________________

28th December 2010, 06:45 PM	#6 (permalink)
frostmotorsport frostmotorsport is working for a living... how boring! GTR Register User Join Date: Aug 2007 Location: Wellington, NZ Cars owned: '97 R33 GT-R, Evo 1 RS rally car, 3 Mk. II Escorts and many more! Posts: 1,144	personally, I'd stay away from Iridiums. They caused me nothing but mis-fires on my GTR. I now run NGK PFR7A-11 gapped to 0.7 as recommended by my tuner. __________________

28th December 2010, 07:02 PM	#7 (permalink)
AlexH AlexH is running out of cash GTR Register User Join Date: Aug 2008 Location: in my own wee world Cars owned: R33GTR Posts: 1,113	i just use whatever MGT racing fit for me............... it's due another service soon and i want some more boost and garth will do some more mapping. im just not stoping till mark says enough is enough, were no where near that point yet so im sure ill get through some more sparkplugs before were done. makes it much easyer when someone else does them for you __________________

21st April 2011, 09:37 AM	#8 (permalink)
dsisco dsisco is unaware they can edit their status GTR Register Member Join Date: Mar 2011 Location: melbourne Posts: 13	i just use ordinary NGK copper plugs, platinum and iridium waste of money imo __________________

31st August 2011, 06:45 AM	#13 (permalink)
GT-R Glenn GT-R Glenn is aware Veilsides street R32 gtr ran 8.612 @ 172.5 MPH (Radials) GTR Register User Join Date: Nov 2002 Location: Waiuku NZ Cars owned: R32GTR /GSXR1300DatsunB310/ R33 / KTM / Gasgas / Type R EG Civic Posts: 4,417	duh, reads first post pfr6a 11 on a stock engine is perfect __________________

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