tbi into a project

[Captn. J]

i gotten ahold of a whole truck so i can transfer the TBI system into my project  so i m wondering what i have to keep and use to get my project running n all  . i know  motor and harness and computer, what else?

[Jjay78]

fuel pump and the pressure regulator systems

[Captn. J]

i dont need the 02 sensor? since i m running uprights

[ToughBowtieTruck]

i dont need the 02 sensor? since i m running uprights

No, the computer will just run in "limp" mode, however it won't actively adjust the fuel/air ratio. It will just use the memory presets in limp mode.

So if you want it to work as a "live" TBI, then put an O2 sensor in one of the uprights. Doesn't matter which side, since the TBI unit isn't smart enough to control fuel to either bank of the engine anyway.

[Captn. J]

ok now  what about fuelpump is it interal for the gas tank but my rig has a fuel cell  how will that work?   i ve been ripping wiring out but i gotta figure what wires i dont need n etc

[73chevytruck]

Tbi motors really don't use that much pressure. I believe its between 9-14 psi. So I think you can run an high pressure inline fuel pump. And you may need some of the wiring harness under the dash to. My 91 was carb when I got it and I converted it over to tbi and frogot one plug under the dash by the computer and it wouldn't run without it hooked up.

[Captn. J]

i will have all the wiring for sure then go from there... and in line u mean inside my fuel cell or along the line?

[ToughBowtieTruck]

i will have all the wiring for sure then go from there... and in line u mean inside my fuel cell or along the line?

Yeah, you can use a parts store in-line fuel pump (not tank mounted). TBIs only run on 9-13 psi. The regulator is in the TBI unit itself, so all you need is a pump. And a return line.

[Captn. J]

how do i set a return line to my tank?

[ToughBowtieTruck]

how do i set a return line to my tank?

Need to switch the sending unit in the tank so it will accept a return line . . .

[Captn. J]

how do i set a return line to my tank?

Need to switch the sending unit in the tank so it will accept a return line . . .

like i said before  i have a fuel cell .  i have a extra hole or opening to my fiuel cell can i connect it to that so it will return to the fuel cell?   sorry i m all new to fuel injected esp modifying it to a bogger

[ToughBowtieTruck]

how do i set a return line to my tank?

Need to switch the sending unit in the tank so it will accept a return line . . .

like i said before  i have a fuel cell .  i have a extra hole or opening to my fiuel cell can i connect it to that so it will return to the fuel cell?   sorry i m all new to fuel injected esp modifying it to a bogger

Should be able to, as long as it dumps it into the cell. The gas just has to find its way back into the tank (cell). TBI systems regulate what fuel and pressure they need, with the extra being ran back to the tank.

Didn't mean to act so short with my replies, if you need more info/whatever, just ask.

[Captn. J]

ok no problem  i will pull and have all wiring outy next week  since i m on vacation now     will have more question if i come up w some dead end    and for the ign part    i have kill switch and push button. guess i ll have to find out where to wire it ?

[ToughBowtieTruck]

ok no problem  i will pull and have all wiring outy next week  since i m on vacation now     will have more question if i come up w some dead end    and for the ign part    i have kill switch and push button. guess i ll have to find out where to wire it ?

Yeah, the push button can just go to your starter, but the kill switch will now have to run the computer as well as an electric fuel pump, you might want to use a separate switch for the fuel pump. I'm not exactly sure what wires need power for the computer though, we'll have to do a little research on that part.

[Captn. J]

Ok appreicate your. Help