1963 40 hp fuel consumption

[ronwomack]

i have a 63 johnson 40 hp. what kind of fuel consumption should i expect from this motor. at wot i burn atound 3 gal per hour. i run a 14 to 1 prop but do not have a tach to know my rpm. do not believe i am over revving. i run a 32:1 fuel mix. have noticed several posts about running 50:1 and would like to know where i can find the info to determine if 50:1 would be ok for my motor. is there a serial number listing of what motors supposedly had different clearances? also are there electric trim motors available for this year? any answers would be greatly appreciated.

ron womack

 

[tashasdaddy]

Re: 1963 40 hp fuel consumption

you can get an induction timing light with the tach feature, to check your wot rpms. if you are getting 3 gal per hour you are good. average rule of thumb, is to move the decimal of the hp to the left one place.
you will send a fortune to try to put together a working OEM t&t unit. better off with one of these, they been reliable for over 50 years.
http://www.iboats.com/Marine_Store/...-submit.y.2--submit.x.40--search_type.keyword

 

[ronwomack]

Re: 1963 40 hp fuel consumption

thanks for the fast response. i greatly appreciate the info.

ron womack

 

[ronwomack]

Re: 1963 40 hp fuel consumption

ouch. t and t units cost a fortune. looks like i'll be going the manual route. thanks

ron womack

 

[tashasdaddy]

Re: 1963 40 hp fuel consumption

here's something a little less money and high tech. available thru cabellas. manual outboard tilter.

 

[F_R]

Re: 1963 40 hp fuel consumption

Wow, they still make those things? I tried to find one without any sucess. They do work. Sort of a fancy crowbar.

 

[BoatBuoy]

Re: 1963 40 hp fuel consumption

i run a 32:1 fuel mix. have noticed several posts about running 50:1 and would like to know where i can find the info to determine if 50:1 would be ok for my motor. is there a serial number listing of what motors supposedly had different clearances?

None that I know of, Ron. This is from the Evinrude website:

"Q - What is the fuel/oil mix for my motor?

A - The following is generally true: 1958 and prior used 20:1, 1959 thru 1963 used 24:1, 1964 and newer use 50:1. High performance usage (racing) requires a ratio of 25:1. New engine break-in (not DI) requires 25:1."

 

[tashasdaddy]

Re: 1963 40 hp fuel consumption

garelick i think it is still makes them too.