Fuel mux for 1960 Evinrude 10HP

[N2outboards]

Please can someone give me the correct fuel mixture with my particular model in image ive shown...1960 Evinrude Sportwin 10hp

 

[racerone]

The original mix was 24:1------But today you will get many different opinions as to what will be proper lubrication for that fine motor.----As previously indicated to you it has a bronze bushing ( if still original ) on the wrist pin.----And that is a known weak point !

 

[flashback]

I love the smell of 24/1 in the morning!

 

[N2outboards]

The original mix was 24:1------But today you will get many different opinions as to what will be proper lubrication for that fine motor.----As previously indicated to you it has a bronze bushing ( if still original ) on the wrist pin.----And that is a known weak point !

Then would a 50:1 mix be a much richer fuel mix over a 24:1?...could it explain why i've been getting a bit more blueish/ grey smoke using a 50:1 mix since ive ownd the motor and 1970 12ft. Valco for last twelve years...even when ive used a 50:1 mix with my outboard mux knobs more toward 3/4 lean still witnessing more of exhaust smoke.Mayve i'll try the 24:1 method, just was worried of running to lean thereby a fried powerhead.

 

[flashback]

Those old guys love oil and 24/1 is a lot more oil than 50/1.

 

[jimmbo]

Then would a 50:1 mix be a much richer fuel mix over a 24:1?...could it explain why i've been getting a bit more blueish/ grey smoke using a 50:1 mix since ive ownd the motor and 1970 12ft. Valco for last twelve years...even when ive used a 50:1 mix with my outboard mux knobs more toward 3/4 lean still witnessing more of exhaust smoke.Mayve i'll try the 24:1 method, just was worried of running to lean thereby a fried powerhead.

50:1 is approx 2% Oil, 24:1 would be 4% oil. So depending how one looks at it, either could be called Richer. A 24:1 mix would be Richer in Oil(double), but 50:1 would actually be a bit Richer in Gasoline, 98% vs. 96%

If the engine has any Friction Bearings(Bushing), then 24:1 is the safer Option

 

[racerone]

Need to review your math.-----24:1 is more oil than 50:1.-----Need to understand the concept of why oil is mixed with gas.----Need to understand the concept of lubrication in a 2 stroke engine !!

 

[flashback]

If it were mine I would run the 24/1 mix and enjoy the smell.. I actually do like it...

 

[oldboat1]

Then would a 50:1 mix be a much richer fuel mix over a 24:1?...could it explain why i've been getting a bit more blueish/ grey smoke using a 50:1 mix since ive ownd the motor and 1970 12ft. Valco for last twelve years...even when ive used a 50:1 mix with my outboard mux knobs more toward 3/4 lean still witnessing more of exhaust smoke.Mayve i'll try the 24:1 method, just was worried of running to lean thereby a fried powerhead.

Don't confuse the gas to oil ratio with air mix (air to fuel). Run with the factory-specified gas/oil ratio, and adjust the air mix as lean (fuel) as required for smooth running. The engine will tell you if it is too lean (backfire at the shaft outlet -- "lean sneeze") -- or stalling.

 

[jimmbo]

If it were mine I would run the 24/1 mix and enjoy the smell.. I actually do like it...

I still remember the Sweet Aroma of burnt TCW Oil. An added Bonus is, it keeps the Skeeters/Horseflies at Bay.

 

[Crosbyman]

1 part of oil for 24 parts of fuel is richer than 1 part of oil for 50 parts of fuel

1 part of oil for 24 parts of fuel is good for black flies

https://www.bing.com/ck/a?!&&p=59ae0fb32df5f80bJmltdHM9MTY4Njc4NzIwMCZpZ3VpZD0xYWFiZTYxNy04MjIxLTY2NzItMDJjZS1mNGFiODMxYTY3YjcmaW5zaWQ9NTE3NQ&ptn=3&hsh=3&fclid=1aabe617-8221-6672-02ce-f4ab831a67b7&u=a1L3ZpZGVvcy9zZWFyY2g_cGdsdD00MSZxPWJsYWNrK2ZseStzb25nJmN2aWQ9ZjFjNTNjMmRiOTE4NDc4NzgzM2MzNWEwOTE5NjA0NDEmYXFzPWVkZ2UuLjY5aTU3ajBsNS4zOTUxajBqMSZQQz1VNTMxJnJ1PSUyZnNlYXJjaCUzZnBnbHQlM2Q0MSUyNnElM2RibGFjayUyYmZseSUyYnNvbmclMjZjdmlkJTNkZjFjNTNjMmRiOTE4NDc4NzgzM2MzNWEwOTE5NjA0NDElMjZhcXMlM2RlZGdlLi42OWk1N2owbDUuMzk1MWowajElMjZGT1JNJTNkQU5OVEExJTI2UEMlM2RVNTMxJnZpZXc9ZGV0YWlsJm1tc2NuPXZ3cmMmbWlkPTQ3REJDQ0UyMTg5NTA2RTRBMkRGNDdEQkNDRTIxODk1MDZFNEEyREYmRk9STT1XUlZPUkM&ntb=1

 

[N2outboards]

Don't confuse the gas to oil ratio with air mix (air to fuel). Run with the factory-specified gas/oil ratio, and adjust the air mix as lean (fuel) as required for smooth running. The engine will tell you if it is too lean (backfire at the shaft outlet -- "lean sneeze") -- or stalling.

Ok. Thank You all of you so much.