1967 era evinrude 40 hp big twin

[Fisher freak]

i would like to find out what the big twin forty is capable of and what i should expect for fuel consumption and and common repairs and problems.

[TN-25]

The 1967 Bigtwin is a simple, solid and reliable motor. It has a mechanical shift that doesn't need the rare & expensive electrical wiring harnesses & pushbutton remote control that the Lark uses. A single carb keeps it simple & understressed. It uses the double layer midsection often referred to as the "Super Quiet" lower unit. Iit also comes with a superior cooling system that keeps water at the optimum operating temp due to the thermostat and recirculation within the midsection (as compared to the 33 and 1971+ 40s).

They are not an especially fast motor but will push a heavy boat quite well. Expect anywhere from 22 - 35 mph, depending on the boat & prop.

Fuel Usage rule of thumb: 10 h.p. = 1 g.p.h.

[kbait]

My '65 big twin pushes my 14' fiberglass yarcraft (rated for 60hp max) to 24mph, and 6 gallons lasts most all day. Very solid, dependable motor and actually pretty quiet.

[Fisher freak]

Thanks i have a 16' trihull that it will be going on. its strictly going to be a fishing boat so speed is not to much of an issue, but it would be nice to get to the hole at better than a crawl eh?