looking at a 1974 johnson 70 ESC

[busted-bayliner]

i might be buyin a boat this week with this motor on it anyone have any comments on it pros or cons the boat is a 18' fiberglass Critchfield w/walk thru. This boat and motor was stored in a basement since 1985 guys says he hasnt tried to start it because of rotted fuel line i have a 65 evinrude to put on the boat untill i get the johnson running so any knowlege about this motor would be great thanks

 

[orbanp]

Re: looking at a 1974 johnson 70 ESC

There was a thread recently titled "Best OMC Motors". In one of the postings TN-25 commented on the 3-cylinder loopers:

...
The 1973+ triples were loopers that had the bugs worked out, plus the ignition, steering & shift mechanisms likewise were matured. They made respectable power, were reliable and modern, Fuel economy was good with the loopers as well.. The twin 50 & 55 was also a nice motor. They did not like to be lugged down like the Big Twins of old, but they were economical for their output. My favorites of the larger motors were the triples though.
Just make sure a carb sync tool is in your toolbox for the triples. All three carbs need to be operating equally in order for those motors to make power, be economical and be durable.
...

Good luck, Peter

 

[Glastron76]

Re: looking at a 1974 johnson 70 ESC

Those 3 cylinder Johnson/Evinrudes are IMO one of the best ever! I have had two, great on fuel compared to V4 85 hp and quite little motor with great weight : power ratio. Parts easy to find. GO OMC !!!

 

[busted-bayliner]

Re: looking at a 1974 johnson 70 ESC

i own right now a evinrude triumph 65 hp an that lil 3 cylinder shocked me as far as power it gets up an goes so are they bout the same motor then?