1964 fuel/oil Mix

[mike2us]

1964 5.5hp johnson seahorse Sorry for posting alot, but now I'm very confused about the fuel/oil mix for this motor.. On the Motor itself it says fuel mix 50:1, but now I'm reading from several post that 1964 and before should be 24:1, because of the brass barrings. I'm going to decarb and run it on Monday so I want to make sure I have the right mix. Man I should have stuck to golfing....

 

[CATransplant]

Re: 1964 fuel/oil Mix

You can follow the manufacturer's recommendations. This engine was probably run for all those years at 50:1. However, I'd start out with a little richer mixture, say 32:1, since it hasn't been running for a while.<br /><br />In fact, if you want, you can use a 32:1 mixture forever in that motor...split the difference, mor or less.

 

[mike2us]

Re: 1964 fuel/oil Mix

Thank You.. Me and my coworker discussed that last night, and he said just split it up and we came up with 32:1. Another question though,, should i expect alot of smoke, or will it go away after awhile..

 

[ZmOz]

Re: 1964 fuel/oil Mix

Originally posted by CATransplant:<br />In fact, if you want, you can use a 32:1 mixture forever in that motor

Very good idea. Even if it would do fine on 50:1, it's old, and a little extra oil won't hurt anything. It will cause slightly more smoke than 50:1, but a motor that old wouldn't run clean if you were using 100:1...

 

[mike2us]

Re: 1964 fuel/oil Mix

Ok used I used 32:1.. Went and rented a boat, loaded it up with fishing gear and crab pots. Started it up and off I went.. Now the problem, Motor would not go at all. I could row the boat faster then that motor. When I got home, neighbor came over to see how i did, and said wow you ran it really rich, because of the black below the exhaust. Well to make the story short, Looks like the problem was the High/Low speed adjustments. Got home put it in a bucket and started to adjust them. Looks like i have them now, because when i put it in gear, the barrel almost falls over.. Thanks Guys for all info,,, Great site..

 

[JB]

Re: 1964 fuel/oil Mix

Actually, Mike, that's a year off.<br /><br />'64 and later engines use 50:1.<br /><br />'63 and earlier engines use 24:1<br /><br />Good luck.