You are mis-interpreting the plug breakdown. G & gv are fine wire nickel or gold paladium in the old style part numbering system (7 digit).

The new 5 digit numbering system uses a-f to signify design variations. The first letter (P) of the number is the electrode material...Platinum.

Look at the chart I posted and only follow the grey flow chart boxes.

Ngk online training: http://www.ngk.de/E-Learning.2977.0.html

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[CENTER][SIGPIC][/SIGPIC][/CENTER]
[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]

Revival time!

So it's time to change out my plugs and I'm planning on going NGK PFR7B (Thanks for all the info on here Ross), but this thread is a few years old, so just seeing if they're still the plug of preference.

Cheers.

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Air is for pussies.

Hey Alex!

I'm running PFR7b's in my motor, no issues and good for 1.6 bar + in my application

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[CENTER][SIGPIC][/SIGPIC][/CENTER]
[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]

Cheers Ross,

I have parts turning up from all corners of the globe in the next week or two, so trying to get a lot of little bits and pieces done before then. Will pick up some PFR7b's tomorrow.

Thanks again!

__________________
Air is for pussies.