Ford V8 spark plugs

[Richard Farrant]

Originally Posted by Richard Notton

NGK A6.

A =18mm 6 = middle heat range.


I had the pleasure of meeting the NGK rep in there one day and asked why so many old plugs were now replaced with a single type.

Better materials - generally if you mix air and petrol at 14:1 it goes bang with the same properties and heat no matter if its in your lawn mower or Ferrari.

Thanks.

Yes, the beauty of these modern plugs with copper core, NGK being one of the first, I recollect, they have a wider heat range so no need for such a wide range of plug grades as in the old days.

[Lynn Eades]

Richard I was ONLY referring to Fords,and yes, I remember the "100E Defect" that my mother owned.(3 lousy ratios, and gutless)
Back to the 18mm plugs, Ford persisted with them into the 80's with the D series petrol trucks. (I think that 300 cu in. petrol motor started life as the Mustang motor of the fuel crisis.