ngk PFR6G-11 questions
05-22-2006, 09:16 PM
#1
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Join Date: May 2006
Location: ft. bragg NC, orig. Chicago IL
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ngk PFR6G-11 questions
im going to be replacing my plugs sometime this week...i just wanna make sure these are the oem plugs for the N/A 300zx's, and if u guiys would recommend it, or get something better...i dont have much done to the car right now, just intake and soon hks exhuast...im a believer in stock plugs, unless i have something majorly done to the car...let me know guys, i did the best i could with a search before i asked
05-24-2006, 02:23 AM
#5
This is taken from Ash Powers' write-up in the 6 P's (Proper Preparation Prevents **** Poor Performance):
To mitigate the posibility of 'spark knock', you should use a spark plug that has a higher ability to dissipate heat. This simply means you need a plug with a higher 'thermal dissipation' number. Here's the breakdown:
NA stock: PFR6B-11 ; upgrade to the PFR7B-11
TT stock: PFR5B-11B ; upgrade to the PFR6B-11B
To view the rest of the 6 P's, go to:
http://twinturbo.net/net/viewmsg.asp...&msg_id=922678
To mitigate the posibility of 'spark knock', you should use a spark plug that has a higher ability to dissipate heat. This simply means you need a plug with a higher 'thermal dissipation' number. Here's the breakdown:
NA stock: PFR6B-11 ; upgrade to the PFR7B-11
TT stock: PFR5B-11B ; upgrade to the PFR6B-11B
To view the rest of the 6 P's, go to:
http://twinturbo.net/net/viewmsg.asp...&msg_id=922678
05-24-2006, 09:19 AM
#8
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Join Date: Jun 2004
Location: Acton, California
Posts: 2,296
Originally Posted by DSR300zx
ok, so lets get this straight, which are the best NGK plugs to go for on a 93 N/A z? and why? like standard or colder plugs?
05-24-2006, 09:31 AM
#9
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Location: ft. bragg NC, orig. Chicago IL
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Originally Posted by CanyonCarver
I won't argue for or against the colder plugs. I have to see some facts on the benefits. I will argue for the stock plugs based on the fact that the motor was designed by Nissan for use with the PFR6B-11's.
05-24-2006, 05:18 PM
#12
If you are running a stock Z then a stock plug will work just fine. If you plan on modifying your Z then I say go with the colder plug. I went with a colder plug on my TT and had a noticeable difference. Then again, I was a Stage III TT running on NA plugs. In Japan the TT came with NA plugs stock. Just goes to show how stock doesn't always mean best.
05-24-2006, 06:53 PM
#14
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Location: Gainesville Fl
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Originally Posted by 92fairladyz
If you are running a stock Z then a stock plug will work just fine. If you plan on modifying your Z then I say go with the colder plug. I went with a colder plug on my TT and had a noticeable difference. Then again, I was a Stage III TT running on NA plugs. In Japan the TT came with NA plugs stock. Just goes to show how stock doesn't always mean best.
05-24-2006, 06:54 PM
#15
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Location: Gainesville Fl
Posts: 631
Originally Posted by DSR300zx
k, well i got the NGK PFR6B-11, can someone tell me the gap for the plugs?
Google for something like (Your cars year) 300zx spark plug gap
05-24-2006, 10:09 PM
#18
Originally Posted by 91Zman
My car isnt stock. Im running stillen ported headers, intake, exhaust, ud pullies, will be getting ECU from Ash soon as well. Would this put me in the upgraded plug category?
05-25-2006, 04:13 AM
#19
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Join Date: Jun 2004
Location: Acton, California
Posts: 2,296
I looked around and couldn't find anywhere that the plug gap was specified. I don't remember what it was, cuz I always ask the guy when I buy them and I'll write it on one of the boxes. Anyways, when I did my plugs on the Z, I had to adjust two of them so they aren't always correctly pre-gapped. I did have to open the gap up.
If all else fails, just make sure that all six plugs are the same gap, whatever they are.
If all else fails, just make sure that all six plugs are the same gap, whatever they are.
05-26-2006, 11:00 PM
#24
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Join Date: Aug 2005
Location: Naperville, IL
Posts: 3,316
Originally Posted by 91Zman
I cant find any PFR7B-11 plugs anywhere, can someone link me?
When you can't find something, it's always because you're not searching hard enough.
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