Picked up an Evinrude Lightwin 4hp outboard boat motor at a tag sale. Im having trouble finding technical details on this thing so I was hoping someone could help me out. So far I know it was made in the 60s, its a 2 stroke, and its a 2 cylinder. Other than that I can say that the carb has 2 mixture screws, one for hi speed and one for low speed. So, I believe it has a hi and a low speed jet.
Id like to know a few basic facts, like its displacement, and the carb size. Wondering if throwing a Dellorto on this thing would be a good idea. Also wondering if throwing twin expansion pipes on this would be a good idea.
Thanks for any info or thoughts. Not looking to make this a screamer, but the carbs a little funky (cool though) with having to adjust the mixture at different speeds. Also expansion exhausts seem like they should be on every 2 stroke.