Plug for Super Winfield head
 

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

Re: Plug for Super Winfield head
 

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

Re: Plug for Super Winfield head
 

Thank you very much!

Re: Plug for Super Winfield head
 

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.

Re: Plug for Super Winfield head
 

I have BPR7HS on mine

Re: Plug for Super Winfield head
 

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

Re: Plug for Super Winfield head
 

Thanks guys!