600-650bhp, Grade 8 or 9 Spark Plug? - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

Nocturnal · 8th August 2006, 03:41 PM

Want to get some new spark plug, but not sure what to order.

Everyone say you go 1 step colder for every 80 bhp, so that will make me need a grade 10 spark plug? Would that be too cold?

I know most Stage 1 GTR use Grade 8. Anyone with a 600bhp single turbo GTR can give some advice.

Cheers,

Tex Willer · 8th August 2006, 04:37 PM

7 or 8

m6beg · 8th August 2006, 05:12 PM

Yes mate 8's Defo

Mick

R32 Combat · 8th August 2006, 06:19 PM

I run 8's as recommended to me by RSP.

Abbey M/S · 8th August 2006, 07:59 PM

Depends what you doing with your car, if your Top Speed running we would run a 8 heat range but with a non protruding tip (less chance of the tip falling off) any other work a normal protruding 8 heatrange will be okay

Nocturnal · 9th August 2006, 08:01 AM

Great help guys, thanks.

tyndago · 11th August 2006, 11:52 PM

slegros · 12th August 2006, 05:25 AM

8's up to about 1.3-1.4 bar should be OK, 10's are way too cold, engine would be terrible around town on 10's

tyndago · 12th August 2006, 05:40 AM

Quote:

Originally Posted by slegros

8's up to about 1.3-1.4 bar should be OK, 10's are way too cold, engine would be terrible around town on 10's

Sure 10's are probably a bit cold.... we run the NGK racing 10's in the race car. I have really liked them so far.

The normal 10's would foul out, but the racing ones don't seem to do it. Of course the racing ones are about $38 US a plug.

8th August 2006, 03:41 PM	#1 (permalink)
Nocturnal GTROC Member Join Date: Nov 2004 Location: Banzai Oct.07 Issue Posts: 1,789	600-650bhp, Grade 8 or 9 Spark Plug? Want to get some new spark plug, but not sure what to order. Everyone say you go 1 step colder for every 80 bhp, so that will make me need a grade 10 spark plug? Would that be too cold? I know most Stage 1 GTR use Grade 8. Anyone with a 600bhp single turbo GTR can give some advice. Cheers, __________________ WideBody BNR32: Winner of the 2007 Cubism Award!!! Banzai October 2007 Feature Car / MaxPower April 2008 Feature Car For Magazine Feature, Wallpapers, Videos, and more...CLICK HERE!!!

9th August 2006, 08:01 AM	#6 (permalink)
Nocturnal GTROC Member Join Date: Nov 2004 Location: Banzai Oct.07 Issue Posts: 1,789	Great help guys, thanks. __________________ WideBody BNR32: Winner of the 2007 Cubism Award!!! Banzai October 2007 Feature Car / MaxPower April 2008 Feature Car For Magazine Feature, Wallpapers, Videos, and more...CLICK HERE!!!

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8th August 2006, 04:37 PM	#2 (permalink)
Tex Willer GTR Register Member $Tex Willer's Avatar$ Join Date: Mar 2006 Posts: 17	7 or 8

8th August 2006, 05:12 PM	#3 (permalink)
m6beg THE WHITE Join Date: Apr 2003 Location: TR RACING Posts: 4,456	Yes mate 8's Defo Mick

8th August 2006, 06:19 PM	#4 (permalink)
R32 Combat New Users Join Date: Jan 2004 Location: Berkshire Posts: 4,357	I run 8's as recommended to me by RSP.

8th August 2006, 07:59 PM	#5 (permalink)
Abbey M/S GTR Register Member Join Date: Feb 2002 Location: The workshop... Posts: 1,964	Depends what you doing with your car, if your Top Speed running we would run a 8 heat range but with a non protruding tip (less chance of the tip falling off) any other work a normal protruding 8 heatrange will be okay

11th August 2006, 11:52 PM	#7 (permalink)
tyndago GTR Register Member Join Date: Oct 2002 Location: LBC , CA Posts: 2,400	10's

12th August 2006, 05:25 AM	#8 (permalink)
slegros GTR Register Member Join Date: Oct 2005 Posts: 149	8's up to about 1.3-1.4 bar should be OK, 10's are way too cold, engine would be terrible around town on 10's