Small gas engines won't run on diesel.
- Thread starter Chris142
- Start date
It runs like the old kerosene engines did. Way low compression
That might be how the guys did it on the small engines.
I swear I am not crazy.
Diesel and kerosene very low octane so if one is going to try and spark ignite them, a low compression ratio is necessary to prevent detonation. It is quite possible to do so with enough manifold heat to vaporize the fuel. Remember that the fuel /air mixture is present during the compression stroke. High compression ratios are used to heat air only during the compression stroke on a diesel and the fuel is injected at the proper time for the big bang to produce power. I have a 1927 McCormick Deering 10-20 tractor. It is designed to start on gasoline then when enough temperature is realized, the fuel supply is switched over to distillate, something like diesel or kero. Right through the same carburetor. Just remember to switch it back to gas before shutting it off as hand cranking almost 300ci trying to start on kero is a non starter. IH also made low compression diesels that started on gasoline then switched over to a diesel. Odd to see a carb and magneto on one side of the motor and a fuel injection pump on the other.
I had a kohler K181 engine on a wheel horse tractor. You had to warm it up on gas, then fill the tank with kero. It required the points to be reduced to 0.010 ~ 0.012 on kero vs the standard 0.018 ~ 0.020 you would normally set them for gas. Otherwise it was like riding with a yanmar diesel.
It didn't have foil under the cap? That is expensive stuff!
Just buy the E10 and remove the ethanol. If was any easier I would even do it!
Mix some blue or red food coloring into tap or distilled water add approx. 1 pint to a gallon of E10 Gasoline. Shake vigorously.
Let sit for half a day or overnight. the Water and ethanol will combine and separate to the bottom, Gasoline is lighter and it will float on the top of the water with a clear demarcation. Drain the E10 off the bottom or siphon the fuel off the top.
A HDPE carboy would work well if you can't make your own device.
That sounds like a lot of work compared to buying 1 gallon of e0 a year lol
Why would you want to use gas with lower than 87 octane? Some OPE, like Stihl recommend a minimum of 90 or 91 if I recall correctly.
Diesel Fuel: approximately 137,381 - 139,000 BTUs per gallon
Kerosene: approximately 133,500 - 135,000 BTUs per gallon
Gasoline: approximately 120,214 - 125,000 BTUs per gallon
LNG: approximately 82,600 to 82,644 BTUs per gallon
People (in Europe) who run CNG/LNG sometimes have issues with burned valves, if the LNG injection is not set properly.
Last edited:
Most ODPE were low compression flatheads with low octane requirements.
I don't have a Kawi twin rider or similar OHV lawn tractor. Are these over 9:1 ?
On the Stihl - are you sure that is not RON method instead of (R+M)/2?
I mean they can't even spell Steel, LOL.
Now you tell me!
YMMV,
Go to the Airport and get E0 avgas - cheaper than the pure gas ripoff in cans from the hardware store
Similar threads
