Apu decision time

Thanks! chunkinpunkin!!!

 

That's because it's working due to the pressure from the weight of the fuel in the tank. Pumping fuel out of a fuel tank will not work. Putting an external fuel tank like 5 gallons is exactly the reason they don't allow external fuel tanks. The pressure from 5 gallons will force fuel past the float valve and overflow causing a fire.

 

meat head, you have no idea what you are talking about apparently. there is a fuel pump on these overhead valve engines, on our race karts the engine sits higher than the tank, and the fuel tank is up between the drivers knees and the motor is on the rear of the kart and the tank is only a 3 quart tank, so there aint no weight pushing nothing.

these engines have the carbs set to run alcohol, the alcohol will react to the aluminum and cause gunk to build up in the carb, at the end of the night of racing we have the kart on a stand and the engine will be 3 foot off the ground we tank a gallon of gas , set it on the ground and run a fuel line from the jug to pump , crank it over and it will pump the fuel 3 foot to the engine straight up. it will dang sure pump fuel from many feet away and uphill to if needed.

heres a link to briggs q and a on fuel pumps, read if ya can understand and comprehend meathead

http://www.briggsandstratton.com/engines/support/frequently-asked-questions/Servicing%20the%20fuel%20pump/


just because the only generator you have ever seen had the fuel tank on top does not mean it cant be removed and an approved external fuel tank cant be mounted anywhere away from the generator and have the fuel PUMPED to the engine, there is even a check valve that can be placed at the tank vent that will keep the fuel from spilling even if turned over, required in many kart racing sanctioning bodies and a check valve that keeps from coming thru the line until a pump pulls it open if you would like .. you have simply assumed that they need to be gravity fed because the tank is mounted on top.

as i stated the gravity feed systems went out with the l-head type motors, the overhead valve have fuel PUMPS and are in no way gravity fed.

take off the pulse line going to the crankcase and the dam thing wont run even if hooked to a 50 gal drum of a gas 100 feet in the air above the engine.

 

Ya, I guess that would work if your building a toy race cart like you but we're talking the engines that people make APU's with and THEY DON'T HAVE THESE PUMPS on them.

Maybe you should start another thread on how to modify an engine with a fuel pump!!

 

toy race kart, thats a funny one, these toys go 70 mph and up. you can take a ohv and put the tank anywhere you like.

every overhead valve engine " HAS A FUEL PUMP" , its nothing you have to add. it is the way they are made. the pump is nothing special, it is standard on all overhead valve engines. heck my mower with the briggs engine has a fuel pump cause the tank is in the back of the mower. as stated the reason generators have the fuel tank on top is it is the best place them, with ohv valve the tank can be on bottom and work.

 

Honda and others that are common generators do not have fuel pumps. They are gravity fed and cannot pump fuel from anything below the engine.

Can you provide a pointer to the spec on lets say a Honda 2000 watt generator that shows the fuel pump? Calling you out.

 

honda engine on a small eu2000 watt gen is an ohc (overhead cam , not an overhead valve engine) engine which is a gx100, the cam is positioned on top of the valves and driven by a belt off the crankshaft. a different setup from the overhead valve which has the cam gear driven off the crank .

it will really vary ,as many of the gx100 engines are using still a floatless carb and has a diaphram type setup to get fuel in.

i have been scolded by the admins for being mean to you, so instead of risking being banned, i will simply say this a generator can be setup to use a remote tank away from the generator without having to be gravity fed, a simple crankcase pressure driven pump costing around 15 to 20.00 can accomplish the task, in fact there are small check valve that can be placed in line that wont allow fuel thru the line until opened by aslight pump pressure. also a low psi electric pump could be used but simpler to use pulse type. these pulse fuel pumps are operated by the crankcase pulse , you simply see where the crankcase plug is and replace it with a plug with a hose fitting to slide a hose over, then a line is ran to the tank and attached to the proper outlet on pump then the a line is ran from the pump to the carb , whenever the engine is turned over the up and down motion of the piston causes a pulse which works the pump diaphram bringing fuel to the carb. thus you run a remote tank.

the discussion drifted away from the original topic of two lane stating he ran a remote tank setup that didnt violate fmcsa rules. you stated it couldnt be done, i stated it can be done. as both two lane and myself have done. that is the real question here, can you get a generator to run off a remote tank and fuel pump system, the answer is yes.



i am done discussing this at risk of being offending to anyone despite whatever misinformation may be posted by other folks.

 

meathead seems to really be just that and has a hard time learning anything

 

Honda EU2000i Generator link EU2000i uses GX100 engine.

GX100 engine parts link and specific FUEL PUMP link

One man's remote tank setup feeding TWO Honda EU200i generators, with no additional fuel pump added... not gravity feed.

From that article... Quote... lead-off sentence of paragraph #4: "The Honda has the fuel tank near the top of the motor but uses a fuel pump."

 

boo yah