June 27th, 2009, 01:05 AM
Lieutenant Commander
Join Date: Apr 2004
Location: Dallas, NC
Posts: 1,748
1974 115 Evinrude gear ratio/Max rpms
I been researching it and looks like the gear ratio is 2.0 and RPM is anywhere from 5000 to 6000. Anyone with something better than a seloc book?
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June 27th, 2009, 01:11 AM
Lieutenant Commander
Join Date: Jan 2009
Location: Pascagoula, MS
Posts: 1,982
Re: 1974 115 Evinrude gear ratio/Max rps
Nandy, my data shows a 2:1 gear ratio but it shows the RPM at 4,500 to 5,500 at WOT.
June 27th, 2009, 01:15 AM
Lieutenant Commander
Join Date: Apr 2004
Location: Dallas, NC
Posts: 1,748
Re: 1974 115 Evinrude gear ratio/Max rps
Thanks!
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June 27th, 2009, 01:39 AM
Lieutenant Commander
Join Date: Jan 2009
Location: Pascagoula, MS
Posts: 1,982
Re: 1974 115 Evinrude gear ratio/Max rpms
You are very welcome.
June 27th, 2009, 07:41 AM
Chief Petty Officer
Join Date: Dec 2006
Location: NC
Posts: 543
Re: 1974 115 Evinrude gear ratio/Max rpms
gear ratio is 2:1 and rpm is listed from the factory as 4500 -5500, but several people believe that they are some what lugging at those speeds and will suggest going to 5600-5800rpm's. I was hesitant at first, but the motor does seem happier at the higher rpm's.
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1974 115 Evinrude gear ratio/Max rpms
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