Reply To: 1933 Evinrude Super Single

[Buccaneer]

This data I have shows a Champion D14 will work.
I bought some NOS ones on Ebay a while back, so
they’re still “out there”.

 

18mm spark plug heat range chart … Hottest on top, Coldest on bottom

Champion – – – AC – – – Autolite – Bosh – Motorcraft Prestolite
C7 (D23) – – – – – –
C15(D21) – – – C88 – – – – – – – – – – BT9
7 (D16) – – – C87 – – – – – – – – – – B8X
6M (D14) – – – C85 – – – 386
5M (D9) – – – C82 – – – 373 – – M8A – — – BT4 – – – 18-3
R7 (D6) – – – – – – 372 – – M7A
R1
R11
R11S Old racers using Alcohol
R2
R2S Using Nitromethane.

Prepare to be boarded!