Plug for Super Winfield head

[ShiftyRat]

Anybody know what plug a Super Winfield head would take on a 31 banger

 

[wensum]

Reds Headers, who sold me my Winfield head recommended NGK 7022 BPR6HS
I've fitted them, but not yet run the motor
Good Luck,
Keith

 

[ShiftyRat]

Thank you very much!

 

[Jim Brierley]

early heads had 18mm plugs, later ones used 14mm. i would use a champion D-14 or D-16 for 18mm and probably a H-16 or 18 for the 14mm head. with the head off check the proper length of H series to use.

 

[bettlesr]

I have BPR7HS on mine

 

[Bick in New Zealand]

I run NGK B7HS and am more than happy with them. I previously ran the B6HS which is slighly hotter.

 

[ShiftyRat]

Thanks guys!