fuel pump question
02-18-2014, 12:33 PM
#1
TECH Enthusiast
Thread Starter
iTrader: (7)
Join Date: Jan 2011
Location: north dakota
Posts: 741
Likes: 0
Received 0 Likes
on
0 Posts
fuel pump question What would happen if I left my 160 gph low pressure pump in (for carb setup) and installed a bosch 044 or even a walbro 255 down stream from that? I need 43 psi for the fast ez efi... The low pressure pump has a relief at 12 psi and id be running a return style regulator. Would it be too much fuel and a waste? Nobody wants to buy my pump so I was wonderin on leaving it in there rather than changing my fuel line setup.so basically using a low pressure pump to feed the high pressure pump to boost its output.... we do this on a huge scale in the oilfield to make the large pumps run the most efficient they can....im looking at between 700 and 800 crank hp with a 150-175 shot.
thoughts?
I posted this in the fueling and injection with no help...
thoughts?
I posted this in the fueling and injection with no help...
02-18-2014, 06:58 PM
#5
Since you already have two pumps you can build an absolute killer fuel system if you add a surge can. Have the low pressure pump feed a quart or so can with a return line from the top going back to the tank. Then have the Walbro take a suction off the surge can to feed the motor. That way no matter how low your tank gets in a hard turn you will never uncover the intake of the high pressure pump. Much more bullet proof than tank baffles.
02-18-2014, 09:20 PM
#6
TECH Enthusiast
Thread Starter
iTrader: (7)
Join Date: Jan 2011
Location: north dakota
Posts: 741
Likes: 0
Received 0 Likes
on
0 Posts
Dont kid yourself, you never liked me! Lol
I was thinking this too. Be easy to do since I ha e the pump. The only issues I see with it is having 2 pumps, 2 regulators, and twice the chance of failure. Ill look up sirge tanks. Should it stay close to the rear tank or get it close to the engine bay as possible?
Since you already have two pumps you can build an absolute killer fuel system if you add a surge can. Have the low pressure pump feed a quart or so can with a return line from the top going back to the tank. Then have the Walbro take a suction off the surge can to feed the motor. That way no matter how low your tank gets in a hard turn you will never uncover the intake of the high pressure pump. Much more bullet proof than tank baffles.
02-19-2014, 05:04 AM
#7
You were going to run 2 pumps anyway and you won't need a regulator on the low pressure pump. Yes, get the surge tank as close to the motor as practical. You can even install the walbro inside the surge tank.