Spark Plugs

The Nissan 300ZX (Z32) general community discussion forum
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ThePlowman
Posts: 12
Joined: Mon Jul 14, 2014 9:15 pm
Car: 300zx TT 93

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So I ended up getting PFR6B-11B spark plugs and not to sure if I needed the upgraded one or not. I am running a stage three clutch with a few modifications but should i keep the gapp at .44 or change to .33. Is there anything to worry about with these or should it run fine regardlesS?

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DCaff300ZX
Posts: 4202
Joined: Sun Jun 14, 2009 8:18 am
Car: .
1993 CRP TT- Modified
Location: Tacoma, Washington

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You would adjust the gap mostly for reasons of an ECU tune (larger/smaller spark size/duration) rather than anything else if you have gotten the correct heat range for your setup.
I believe that my guy went with .36, not positive though.
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