Thread: E10?

Originally Posted by ramblingboy42

...and so....getting back to the question......my ride uses e10, its not a John Deere, the engine is 38hp Kholer . My neighbour's is a Husqvarna , similar power and he uses e10. Do JD make their own engines?

Don't think so, I'm pretty sure they're all bought in . My JD has a Kawasaki motor but sounds like its B&S now?.

Originally Posted by Pedro_The_Swift

and the original question is why marine outboard engines are specced to NOT run on E10,,

I think the JD ride ons are rebadged Briggs and strattons

IME most marine outboards are 2-stroke. That'd be your answer, right there. Alcohol fuels don't carry the oil well and you'll have lubrication issues. Simple as that.

Originally Posted by DiscoClax

IME most marine outboards are 2-stroke. That'd be your answer, right there. Alcohol fuels don't carry the oil well and you'll have lubrication issues. Simple as that.

Na, most of them are now 4 stroke these days you would be lucky to buy a two stroke
cheers
blaze

twice the size, twice the weight, half the HP,,

Originally Posted by JDNSW

I'm afraid you are not strictly correct. They do not allow outward venting, except, as you point out, to relieve excess pressure when hot. But they must allow inward venting, as otherwise, by the time the tank was empty, it would have a pretty good vacuum in it, and fuel delivery would be difficult!

The air that is drawn in will contain water vapour, which will be absorbed by the ethanol. If the tank is only partly filled, cool temperatures overnight will mean more air will be drawn in, which will then expend during the day, probably requiring pressure relief, and the cycle repeated next night, with fresh, moist air.

The only way to avoid this is to keep the tank completely full.

As I pointed out above, if there is no ethanol in the fuel, if the air is moist enough, and there is a sufficient temperature cycle, the water vapour in the air will condense on the cold top of the tank, from where it will run to the bottom of the tank. Since it is immiscible with and denser than petrol, it will form separate droplets in the bottom of the tank, that cannot progress further into the fuel system, and hence are largely harmless, although owners of Series vehicles with rusted out fuel tanks or rust pinholes in the suction line may not agree!

Its not just in your own fuel tank that there can be a phase separation problem....
Veeder-Root | Phase Separation

Originally Posted by Eevo

i wont use e10 in any of my cars or chainsaw. it's just not fuel.

Our Mazda 2 is totally happy on E10.
You could get an electric chainsaw.

Originally Posted by Pedro_The_Swift

twice the size, twice the weight, half the HP,,

More importantly twice the lifespan and the don't oil up the plugs at low speed

Originally Posted by bblaze

Na, most of them are now 4 stroke these days you would be lucky to buy a two stroke
cheers
blaze

Oooooh. I AM out of touch. Cheers Blaze. I should have updated my knowledge before posting rubbish...