Re: 1978 115hp johnson outboard, good engine?
I'm the new owner of a 77 85HP Johnson, which is essentially the same motor, just a bit smaller bore.. The 85 to 140 hp versions of the same vintage are very similar, many parts interchange & are easy to find. Before you do anything tho, I'd recommend look on here for an article about bringing an outboard back to life, and doing a compression test. If the compression checks out, plan on rebuilding the carburetors, & checking the entire fuel delivery system.