TBI Fuel regulator in the throttle body?

enkeivette

enkeivette

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Mar 30, 2008
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With this crossfire setup, do I just need to pump 18-20psi into the line and not worry about regulating it?

How good is the regulator? Can I use a ford truck fuel pump that puts out more like 45psi? Will it regulate it down?

Looking for an inline junkyard fuel pump option. The stock pump is an in the tank pump so I can't use it.
 
Regulator is pretty bullet proof, can be made adjustable or bought adjustable. Or removed, swapped w/ an accumulator from anotehr pass. side TB and use external press. regulator. You only need 10-14psi.

Don't use 45 psi, injector will lock up, hydrolocking the engine. You can use any pump, also a tpi or lt1 pump, in fact those are recommended since the stock pump is only marginally able to make the flow required. A tpi pump will simply work, regulated to proper pressure by the regulator.
 
Twin_Turbo said:
Regulator is pretty bullet proof, can be made adjustable or bought adjustable. Or removed, swapped w/ an accumulator from anotehr pass. side TB and use external press. regulator. You only need 10-14psi.

Don't use 45 psi, injector will lock up, hydrolocking the engine. You can use any pump, also a tpi or lt1 pump, in fact those are recommended since the stock pump is only marginally able to make the flow required. A tpi pump will simply work, regulated to proper pressure by the regulator.
Click to expand...

I agree. I'm using an LT1 pump in my '84 with good results.
 
The TPI fuel pumps aren't higher than 45psi? Are any of them inline?
 
enkeivette said:
The TPI fuel pumps aren't higher than 45psi? Are any of them inline?
Click to expand...

IF you block the return line, dead heading the pump, they will clock 60 psi....

it's a trick I use to clear the regulator, back when I had fuel problems....
 
Pump creates flow, not pressure. Pressure is the result of pushing a volume through a restriction, in other words flow through a regulator. The reg. is nothing more than a spring loaded restriction. Max pump rating is dead head pressure, the result of cramming a volume in a blocked off line or container.

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