Which Spark Plug CAN I use?

The Nissan 300ZX (Z32) general community discussion forum
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dp94
Posts: 7
Joined: Tue May 05, 2015 7:37 pm
Car: 1990 Nissan 300zx 2+2 NA

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My car is a NA and I know the FSM and many posts have said NGK PFR6B-11 plugs ONLY.

For a stock application, daily driver, is an $18 plug from Nissan worth it?

Can I settle for the NGK BKR5EGP's?
They are also platinum tipped. I'm already running one now after a cylinder dropped on me, after install she ran smoothly again.

So...? Thoughts.

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NolimitZ32
Posts: 7042
Joined: Fri Jun 27, 2008 9:07 am
Car: 91 AG2 2+0 TTMT swap/E39 BMW 540i6/E53 4.6is Dinan S3
Location: Houston, TX

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The NAs are less finicky and generally accept other plugs, the TTs are a bit more sensitive especially when squeezing more power out of them.
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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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I agree with NoLimit on this, but my high-mileage NA at the end of her days did not do well on anything but recommended...lower compression needs the correct spark.
If you are running fine with the single one then you should be fine with adding the other 5.
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