Alcohol Lawn Mower

[DuffmanOhYeah]

Originally posted by: Roger
It is rather simple to do, remove and disassemble carb, remove main jet, drill jet two to three drill #'s larger, reassemble carb.
Remove cylinder head, shave .050 of surface, reassemble with new head gasket, remove idle mixture screw, carefully grind .030 of the tip, reassemble, adjust idle mixture screw 3.5 turns out from bottom.
Prime the carb with gas, start engine, if the engine starts then immediately dies, unscrew mixture screw one additional turn.
Once warmed up at idle, accelerate the engine to full speed, if it sputters (lean condition), disassemble carb and drill jet one drill # larger, continue this process until full speed enrichment is correct.

Like he said. Easy. :Q

 

[jcovercash]

Originally posted by: NeoPTLD
I'm sure you can find pure methanol or E85 fuel(85% ethanol/25% gas) rather than using rubbing alcohol. To use alcohol in a carbureted engine with a carburetor designed for gasoline, you'll have to change out the carburetor jet. If you can't find a drop in replacement jet, you will have to figure out the right diamater and machine one yourself. Running time per volume of fuel is about halved on alcohol.

Yea get some methanol, or if you wanna go out, why not use some NITROMETHANE!!!!

 

[WinkOsmosis]

I want to run a lawnmower on olive oil.

 

[Eli]

Originally posted by: WinkOsmosis
I want to run a lawnmower on olive oil.

I am sure someone makes a vertical shaft diesel.

Imagine how that thing would power through tall grass!

And you would get good APG, too.

Acres Per Gallon.

 

[kevinthenerd]

Originally posted by: Eli

All modern lawnmower engines are 4-stroke.

WRONG. MANY are 2-stroke, especially the ones you'll find in the garbage. You have to mix the oil with the gas.

Originally posted by: Eli
How do you plan on beefing up the valve springs? Just buy an aftermarket set?

Is it possible to restretch the existing metal? Perhaps I can use some made for a different motor? I'll figure something out.

Oh, and that airplane fuel sounds like a good idea. Maybe I'll mill out the head to up the compression and just go with that.

 

[kevinthenerd]

Originally posted by: Roger
It is rather simple to do, remove and disassemble carb, remove main jet, drill jet two to three drill #'s larger, reassemble carb.
Remove cylinder head, shave .050 of surface, reassemble with new head gasket, remove idle mixture screw, carefully grind .030 of the tip, reassemble, adjust idle mixture screw 3.5 turns out from bottom.
Prime the carb with gas, start engine, if the engine starts then immediately dies, unscrew mixture screw one additional turn.
Once warmed up at idle, accelerate the engine to full speed, if it sputters (lean condition), disassemble carb and drill jet one drill # larger, continue this process until full speed enrichment is correct.

You know, as much text as that is, it DOES sound easy. Basically, I need to widen up the whole intake and mill the head.