Ford V8 spark plugs

[Neil Ashley]

Richard

Unless my memory is giving out, Canadian V8 engines take 14mm plugs.

[Richard Farrant]

Thanks Rhett, and Neil,

I had seen these 18mm plugs at much higher price, but £3 is more realistic ! The Green Spark Plug Co. website was off when I looked, they are back online now

[Lynn Eades]

To my knowledge (which is regularly adjusted) pretty much all Canadian and American Ford v8's were 14mm. Only the Brits stuck with the(archaic) 18mm.

[Richard Farrant]

Originally Posted by Lynn Eades

To my knowledge (which is regularly adjusted) pretty much all Canadian and American Ford v8's were 14mm. Only the Brits stuck with the(archaic) 18mm.

Actually Lynn, most of the British engines at that time (WW2) were 14mm plugs. It was only old Henry Ford who was still using 18mm, also in his tractors at that time. Talk about a "stick in the mud", Fords continued until the late '50's with 3 speed, side-valve cars..............oh thats another subject

NGK A6.

A =18mm 6 = middle heat range.

Maccess had plenty, mainly because Rory kept buying boxes for the Morris-Commercials and the computer kept re-ordering. . . . . . . . . They've sussed it now unfortunately.

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. All the complex numbers just define the particular mechanics of suppression, thread reach, seating and hex etc; as a glance at the nomenclature chart shows.
http://www.spark-plugs.co.uk/pages/t...ymbol_code.htm

A6's (7's would do) have done thousands of miles in the M-C's and a few hours in my pre-war Allen Scythe too, Daves F15 has had BM6ES from the word go; no B6ES on the shelf so used lawn mower plugs. . . . .M = compact insulator.

R.

[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.