engine and drivetrain NGK BP5ES or BP6ES?

[Majkelangelo]

Thanks to this great forum, I think I have concluded that NGK is a better choice than Bosch when it comes to plugs (generally speaking).

I run a 38/38 Weber, ti higher compression pistons and electronic ignition with stock coil in my '76, so I am wondering whether BP5ES is too hot for this engine (I only drive the car in the summer and fall, so relatively high temperatures). Would BP6ES be a better choice? ...

Thanks in advance!

[Tommy]

BP6ES is stock for many 02 engine models. So yes, if you say higher compressions, 6 would be better. Maybe even 7, but if you've been ok with 5 don't change more than one step.

[ClayW]

What about the "G-Power", "V-Power" and "Iridium IX" plugs? Has anyone seen a difference with these?

NGK says the part numbers are BP6EY, BPR6EGP & BPR6EIX respectively.

[TobyB]

6. no power or platypusinimiumim.

Unobtanium, however, will give you alpinus- like- speed...

t