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Ok all you mathematical geniuses out there, I need help to figure out a fuel - oil ratio for an old 2 stroke engine that a buddy gave me. I bought some 2 stroke oil to use for my lawn mower and my trolling motor at Wally's World (aka: Wal Mart) and the top portion has a separate container for mixing, but it only lists the ratios.
On the engine it states to mix 1/3 pint to one gallon. Does any one have a quick conversion formula for finding out what the ratio is? 20:1, 30:1, etc.? [crazy]
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I bought a bottle that shows you how much oil for how many gallons at boaters outlet. It has a chart right on the side for the different mixtures. It takes all the guess work out of it. Also some oils are alot better than others I buy Quick silver and have never had a fouled plug.
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24:1 New oils you can run 50:1 in most old engines
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If my math is correct, your ratio should be 24:1.
128(oz in a gallon gas)/5.33 (oz in 1/3 pint oil) = 24.02 thus the 24:1 ratio. But I aint no math genius, so hopefully someone else can verify. Of course 24:1 is a very oil rich ratio and you should have no problem running this ratio in any 2 stroke motor. I hear the new Yamaha outboards are a very lean 100:1. I've never seen a 2 stroker with a more oil rich ratio than 24:1. Good luck and catch some fish!
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There are 3 "1/3" pints to a pint. 2 pints per quart. 4 quarts per gallon. 8 pints or(3X8 or 24 "1/3" pints per gallon). So each 1/3 pint is one 24th of a gallon or one in 24 - 1:24 - so, if you want the motor to run oil rich do a 1:20(better for the motor but worse for the environment) if you want it oil lean, a 1:30(runs cleaner but is not as lubricated). When I winterize my motors I run a very high oil to gas ratio to lube it up real good for storage. I was told this would work well for two stroke engines when I was younger and it seems to have for me so far.
What kind of motor and what year is it ?
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[font "Comic Sans MS"][black][size 3]Nothing more than simple math:[/size][/black][/font]
[font "Comic Sans MS"][black][size 3][/size][/black][/font]
[font "Comic Sans MS"][black][size 3]1:50 is 1 part oil to 50 part fuel so if how much oil do you put in a one gallon can of gas? I have a 6 gallon fuel tank.[/size][/black][/font]
[font "Comic Sans MS"][black][size 3][/size][/black][/font]
[font "Comic Sans MS"][black][size 3]1 gallon =128 ounces[/size][/black][/font]
[font "Comic Sans MS"][black][size 3][/size][/black][/font]
[font "Comic Sans MS"][black][size 3]128 divided by 50 (by the ratio) = 2.56 ounces of 2 cycle oil per gallon.[/size][/black][/font]
[font "Comic Sans MS"][black][size 3][/size][/black][/font]
[font "Comic Sans MS"][black][size 3]Multiple 2.56 (ounces of oil) X 6 (number ogallons) = 15.36 ounces (or a 16 ounces bottle) to the 6 gallon tank.[/size][/black][/font]
[font "Comic Sans MS"][black][size 3][/size][/black][/font]
[font "Comic Sans MS"][black][size 3]Another example:[/size][/black][/font]
[font "Comic Sans MS"][black][size 3][/size][/black][/font]
[font "Comic Sans MS"][black][size 3]Your ice auger takes 1:25 ratio of oil to fuel. You have a 1 gallon fuel tank.[/size][/black][/font]
[font "Comic Sans MS"][black][size 3][/size][/black][/font]
[font "Comic Sans MS"][black][size 3]128/25=5.12 add 5.12 ounces of oil to the one gallon gas can. [/size][/black][/font]
[font "Comic Sans MS"][black][size 3][/size][/black][/font]
[font "Comic Sans MS"][black][size 3]It's really pretty easy.[/size][/black][/font]
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thanks all for the helpfull info. The motor is a 1950's era Evenrude 2hp. (top speed is a slow troll speed).The last time it was used by my buddy, he was in Canada and it went out on him. He thought he had gotten some bad gas up there, I think he may have mixed it wrong because in Canada their gas is sold in liters not gallons. I'm hoping that some clean fuel, a new spark plug and some WD40 sprayed in the carb to clean that out will do the trick to get it going.
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I wouldn't recommend shooting wd40 into your carbs. Try using a standard aerosol carburator cleaner. WD40 will foul your plugs quick. Also remove the spark plugs and shoot some carb cleaner directly into the cylinder while pulling the rope. This will clean out and "pre-charge" the cylinders with a very flammable fluid. I'll bet the old girl starts right up. Good Luck!
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I try to stay away from Burrito's. Every time I have them, the Ozone layer takes a big hit.
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ouuuuuch all this math hurts my head!!!!!
DZ
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[font "Comic Sans MS"][black][size 3]As with most people, I'll bet if we used dollars and cents as the conversion media, you'd be genius! LOL![/size][/black][/font]
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just some third hand two cents:
i was told by a outboard mechanic that you should never run an outboard with a richer oil/gas mixture than it was designed to take. apparantly you run a chance of gumming up the motor and will cause more problems than being a little lean.
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] The exhaust might even work as an attractor!