13B-T fuel system

[M John Galt]

***

 

[70sguy]

Umm.. there is no fuel cut on a 13B-T... At least in the the JDM BJ71/74 application. The shut down of the engine is controlled by a 2 wire Vacuum switching valve.

 

[Greg_B]

I read that to mean an electrical circuit too. Funny how perspective skews things...

Do you mean the fuel lines? The injection pump? Injectors? Looking for information on the fuel supply system?

Download the 3B/13BT engine manual here:http://www.birfield.com/downloads-cat-1.html

hth's

gb

 

[70sguy]

OK I'm awake now. I'm not aware of any schematics per se. The fuel comes out of the tank via the large line, travels along the frame rail, up the fire wall, through the fuel sedimenter, into the fuel filter, into the injection pump, to the injectors, excess fuel gets collected in the return fuel bar that crosses the top of the injectors which conects to the smaller rubber hose then back to the smaller fuel line and back into the tank through the barb next to the pick up.

Clear as mud?

 

[M John Galt]

thanks - that expalins it well. I'm considering the options of where to place a bypass to loop the return for cold weather running.

 

[Greg_B]

thanks - that expalins it well. I'm considering the options of where to place a bypass to loop the return for cold weather running.

Put a temp gauge in at the tank (or take readings with a gun) and see if you even need it. At one lpm return rate to the tank your fuel will be warmed somewhat already.

hth's

gb

 

[70sguy]

Pretty sure that isn' t going to work very well. The returning fuel tends to get foamed up quite a bit, at least that is what we have observed running 13B-Ts on our test bed. This will cause air in the pump and injectors.. all bad. The fuel needs to go back to the tank to settle out.