Not really sure about this, but usually, if there is a difference in
the engines, it's likely to be different jets, and/or larger throats in
the carburation and possibly nothing else.

OH, and possibly price when new.


Matt Pieklik wrote:
Can anyone tell me where the difference is between a 1973 Johnson 20 hp and
a 1973 Evinrude 18 hp ? Is it a marketing ploy or a different high speed
jet? It all looks the same to me. Thanks in advance , Matt.