Spark plugs...

Joepro · 08-09-2013, 01:07 PM

Yes I know they are 100k plugs, but Iwant to change them anyway, going for a tune soon. The supposed OE plug is fxe24hr11, NGK does suggest a 7 heat range which is a 22 denso...which is the old HR plug. I can get the fxe22 with ease, anyone see an issue, obviously I am NA.

Nissan see confused as well! (I checked multiple sources)

SPARK PLUG - 370Z (Z34) 2009+ :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com

7419sundat · 08-09-2013, 09:31 PM

Same plug heat range on the same setup see no issue.

MyKindaGuise · 08-09-2013, 10:47 PM

I had to swap mine today for a tune. Only 16k miles. Its worth doing. Just use stock OEM spark plugs. Its the same as the gtr plugs.

DEpointfive0 · 08-09-2013, 10:50 PM

Quote:

Originally Posted by MyKindaGuise

I had to swap mine today for a tune. Only 16k miles. Its worth doing. Just use stock OEM spark plugs. Its the same as the gtr plugs.

GTR are one step colder if I'm not mistaken

MyKindaGuise · 08-10-2013, 01:54 AM

Quote:

Originally Posted by DEpointfive0

GTR are one step colder if I'm not mistaken

Literally just pulled my OEMS out today and they are the same thing down to the model number.

SS_Firehawk · 08-10-2013, 02:46 AM

I have a set of brand new plugs and a set with 10k on em if you need

Joepro · 08-10-2013, 06:17 AM

It's an after thought is the issue my tune is on Tuesday...out of time. They are both 8 heat range gtr and our plug... which from what I read is quite cold for an na engine.

arnoldas · 08-10-2013, 01:58 PM

is it hard getting to the spark plugs?

Motion Lab · 08-10-2013, 02:35 PM

Quote:

Originally Posted by MyKindaGuise

Literally just pulled my OEMS out today and they are the same thing down to the model number.

No, the GT-R uses a DILKAR8A8 plug which has a smaller gap and a different grounding strap design.

As for the original question I would stick with the OEM heat range. The VQ37HR is already somewhat prone to detonation. 11:1CR on pump gas makes it difficult enough to pick up power, don't put yourself CLOSER to detonation with the hotter plug. By storing less heat in the plug your tuner might be able to squeeze a little more power out before he finds the limit of where the engine is happy.

Hotter plugs will make more power with the right fuel, but I wouldn't run a hotter plug without e85 or higher octane race fuel not just plain ol' pump gas.

Just my opinion!

Thanks,
Alex Goodwin
AlexG@motionlabtuning.com

SS_Firehawk · 08-10-2013, 02:36 PM

Quote:

Originally Posted by arnoldas

is it hard getting to the spark plugs?

I couldn't find them anywhere locally. Had to order them. Dealer quoted me $120, I said

So I went n ordered them from Z1. Aaaaannnnnddddd didn't even have to use them.

Joepro · 08-10-2013, 02:52 PM

well considering NGK says a 7 range plug, I threw the 22's in there, we will see what happens, the idle is WAY better. My cousin wasa former nissan tech and had many engine triaining sessions and he said he has no idea why they put such a cold plug in it.
We have 93 octane everywhere here, no 91, so me thinks its going to be ok.

MyKindaGuise · 08-10-2013, 03:00 PM

Quote:

Originally Posted by Motion Lab

No, the GT-R uses a DILKAR8A8 plug which has a smaller gap and a different grounding strap design.

As for the original question I would stick with the OEM heat range. The VQ37HR is already somewhat prone to detonation. 11:1CR on pump gas makes it difficult enough to pick up power, don't put yourself CLOSER to detonation with the hotter plug. By storing less heat in the plug your tuner might be able to squeeze a little more power out before he finds the limit of where the engine is happy.

Hotter plugs will make more power with the right fuel, but I wouldn't run a hotter plug without e85 or higher octane race fuel not just plain ol' pump gas.

Just my opinion!

Thanks,
Alex Goodwin
AlexG@motionlabtuning.com

I can personally confirm that I pulled my oems out and replaced with brand new in box OEM gtr heat range 8 plugs and they were the same thing. But hey not like I had them in my hands yesterday or anything.
My car is the only 370 I have pulled the plugs on so maybe before I bought the car new the dealer had swapped them in there. Its the only thing I can suspect if they DONOT normally use the same thing.

critical · 08-10-2013, 03:02 PM

Opinions on NGK R2558A-9? It's listed in the Nismo catalog as a race spark plug.

http://www.nismo.co.jp/en/products/c...f/engine02.pdf

Joepro · 08-10-2013, 03:39 PM

I'll call the tuner on Monday and ask what they advise. I can always stick the stock plugs back in Monday not hard job just sucks you got to take off the throttle bodies.... Also help put an exhaust on a gtr today... that was fun!

Joepro · 08-10-2013, 04:39 PM

I sent an email on over to the tuner, hopefully they get back to me monday... I told them the dilemma, ill run the OE plugs with 22k or new fxe22...from more research it seems they bumped it to the step colder due to the 11:1 CR, but there are mixed opinions around the web, some say use 8 heat range for 11:1 other say use 7, I will let the tuner decided, but the car sure does idle better, much cleaner idle, didnt get any pings on the drive home, but that is a good point about the timing, they might not be able to advance as far as with the 8/24 range...

08-09-2013, 01:07 PM	#1 (permalink)
Joepro A True Z Fanatic Join Date: Aug 2012 Location: Athens ohio Posts: 1,213 Drives: Company car Rep Power: 34	Spark plugs... Yes I know they are 100k plugs, but Iwant to change them anyway, going for a tune soon. The supposed OE plug is fxe24hr11, NGK does suggest a 7 heat range which is a 22 denso...which is the old HR plug. I can get the fxe22 with ease, anyone see an issue, obviously I am NA. Nissan see confused as well! (I checked multiple sources) SPARK PLUG - 370Z (Z34) 2009+ :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com __________________ Swift\|Koni\|SPC\| FI CBE\|Z1\|Stillen\|Sbend\|Zspeed\|R/T Tuned\|523 whp\|458 tq\|10.5 psi\|SOLD Joepro's Journal\|Joepro's Boosted Performance Build \|Pittsburgh-Western-Pa-Ohio-Wv-Group

08-09-2013, 10:47 PM	#3 (permalink)
MyKindaGuise A True Z Fanatic Join Date: Feb 2012 Location: Pennsylvania Posts: 2,029 Drives: 11' 370z Sprt M6 Rep Power: 20	I had to swap mine today for a tune. Only 16k miles. Its worth doing. Just use stock OEM spark plugs. Its the same as the gtr plugs. __________________ \|445whp398tq\| \|BW S259 Turbo\|3" Downpipe\Exhaust\|ID1000\|AeroMotive\|Tial\|EcuTek\|BC BR\|S0-4\|MaffFab\| MKGs-Single-Turbo

08-10-2013, 02:46 AM	#6 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	I have a set of brand new plugs and a set with 10k on em if you need __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

08-10-2013, 06:17 AM	#7 (permalink)
Joepro A True Z Fanatic Join Date: Aug 2012 Location: Athens ohio Posts: 1,213 Drives: Company car Rep Power: 34	It's an after thought is the issue my tune is on Tuesday...out of time. They are both 8 heat range gtr and our plug... which from what I read is quite cold for an na engine. __________________ Swift\|Koni\|SPC\| FI CBE\|Z1\|Stillen\|Sbend\|Zspeed\|R/T Tuned\|523 whp\|458 tq\|10.5 psi\|SOLD Joepro's Journal\|Joepro's Boosted Performance Build \|Pittsburgh-Western-Pa-Ohio-Wv-Group

08-10-2013, 02:52 PM	#11 (permalink)
Joepro A True Z Fanatic Join Date: Aug 2012 Location: Athens ohio Posts: 1,213 Drives: Company car Rep Power: 34	well considering NGK says a 7 range plug, I threw the 22's in there, we will see what happens, the idle is WAY better. My cousin wasa former nissan tech and had many engine triaining sessions and he said he has no idea why they put such a cold plug in it. We have 93 octane everywhere here, no 91, so me thinks its going to be ok. __________________ Swift\|Koni\|SPC\| FI CBE\|Z1\|Stillen\|Sbend\|Zspeed\|R/T Tuned\|523 whp\|458 tq\|10.5 psi\|SOLD Joepro's Journal\|Joepro's Boosted Performance Build \|Pittsburgh-Western-Pa-Ohio-Wv-Group

08-09-2013, 09:31 PM	#2 (permalink)
7419sundat Base Member Join Date: Aug 2011 Location: colorado Posts: 145 Drives: 09 370z Gtm TT 2 Rep Power: 14	Same plug heat range on the same setup see no issue.

08-10-2013, 01:58 PM	#8 (permalink)
arnoldas Base Member Join Date: Aug 2012 Location: new york Posts: 197 Drives: 09 Nissan 370Z M6 Rep Power: 13	is it hard getting to the spark plugs?

08-10-2013, 03:02 PM	#13 (permalink)
critical A True Z Fanatic Join Date: Oct 2012 Location: Washington Posts: 1,252 Drives: 09' 370z 7AT Rep Power: 16	Opinions on NGK R2558A-9? It's listed in the Nismo catalog as a race spark plug. http://www.nismo.co.jp/en/products/c...f/engine02.pdf

08-10-2013, 03:39 PM	#14 (permalink)
Joepro A True Z Fanatic Join Date: Aug 2012 Location: Athens ohio Posts: 1,213 Drives: Company car Rep Power: 34	I'll call the tuner on Monday and ask what they advise. I can always stick the stock plugs back in Monday not hard job just sucks you got to take off the throttle bodies.... Also help put an exhaust on a gtr today... that was fun! __________________ Swift\|Koni\|SPC\| FI CBE\|Z1\|Stillen\|Sbend\|Zspeed\|R/T Tuned\|523 whp\|458 tq\|10.5 psi\|SOLD Joepro's Journal\|Joepro's Boosted Performance Build \|Pittsburgh-Western-Pa-Ohio-Wv-Group

08-10-2013, 04:39 PM	#15 (permalink)
Joepro A True Z Fanatic Join Date: Aug 2012 Location: Athens ohio Posts: 1,213 Drives: Company car Rep Power: 34	I sent an email on over to the tuner, hopefully they get back to me monday... I told them the dilemma, ill run the OE plugs with 22k or new fxe22...from more research it seems they bumped it to the step colder due to the 11:1 CR, but there are mixed opinions around the web, some say use 8 heat range for 11:1 other say use 7, I will let the tuner decided, but the car sure does idle better, much cleaner idle, didnt get any pings on the drive home, but that is a good point about the timing, they might not be able to advance as far as with the 8/24 range... SG4247 likes this. __________________ Swift\|Koni\|SPC\| FI CBE\|Z1\|Stillen\|Sbend\|Zspeed\|R/T Tuned\|523 whp\|458 tq\|10.5 psi\|SOLD Joepro's Journal\|Joepro's Boosted Performance Build \|Pittsburgh-Western-Pa-Ohio-Wv-Group

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