Drilling holes on side of block?

[ironman]

now thanks old school is that your s or just a picture you got

 

[Jblankster]

i have the one in the second pic, the gas line is still higher/same hight as the carb. so it flows into it still, the "pressure" of the gas is what brings it to the carb.

like a water tower in your town.

 

[jr dragster T]

Well no matter if it has a pump, diamphram, or vacum thing its still a form of either sucking up or pumping the fuel in. It does magically flow in the carb uphill.

 

[crazycart]

The diaphram in the carb is pretty much a built in fuel pump.Why else would the carb have a diaphram??

 

[oscaryu1]

Some carburetors don't need fuel pumps because they use a diaphram n' stuff...

Hmm... sound familiar?

And no, it isn't my engine. But you have to admit. She is a BEAUT!

 

[Russ2251]

Diaphragm carbs are not necessarily pumpers. Diaphragms replace floats and bowls primarily.

 

[oscaryu1]

Then it must be a miracle that that Briggs could suck gas up that much of line and run! The carburetor is too small to place a diaphram in anyways... and there's none in the tank/line...

 

[Russ2251]

There is a check valve built into fuel tank pick-up. Once the fuel flow starts, it does not run back into tank. Fuel line stays filled until it runs out of fuel. I have 3 Briggs engines that use this same fuel system and all work flawlessly. A 1936 model 'Y', 1938 model 'WM', and 1941 model 'WMB'. All are also kick start.

 

[oscaryu1]

That's what I was wondering about! Thank you!

 

[hickskateboarder]

when air flows thru the carb, it creates an area of low pressure. the higher air pressure outside (and hence, in the tank) pushes the gas up through the "tube" into the carb. the pressure of air (on average at sea level) is 14.7 psi, plenty enough to push gas up into ur carb. we figured out in physics that if you have a perfect vaccuum air pressure will push water straight up 10 meters. over 30 feet.