Brian Allen
Well-known Member
I did a little research today on spark plugs for the Fordson Model E27N.
I found that the C4 & C5 Champion spark plugs are no longer made.
The C4 is now a W16Y with absolutely no crossovers available.
The C5 is now a W14 with three crossovers
AC Delco numbers C75 or C77
Autolite numbers 3075 or 3076
Prestolite numbers 78-8 or 78-10
The thread used for these plugs is 7/8” – 18
Reach is 5/8”
Hex is 15/16”
Heat range is 6 (for both the original C4 and the C5)
Spark gap is 0.025” for all plugs.
Brian
I found that the C4 & C5 Champion spark plugs are no longer made.
The C4 is now a W16Y with absolutely no crossovers available.
The C5 is now a W14 with three crossovers
AC Delco numbers C75 or C77
Autolite numbers 3075 or 3076
Prestolite numbers 78-8 or 78-10
The thread used for these plugs is 7/8” – 18
Reach is 5/8”
Hex is 15/16”
Heat range is 6 (for both the original C4 and the C5)
Spark gap is 0.025” for all plugs.
Brian
