Tweet
I have '78 model 115 hp Evinrude. My manuals tell me the bore and stroke are the same on the 135 hp. I got a 135 hp. the carbs are 1/8" larger and the exhaust cover looks to have much better flow charicteristics. Are there other differences. Port timing ect. I have changed carbs and exhaust cover hoping for improved performance but didn't really see any. Your help is appreciated.
Charlie
Charlie