I spoke to Don today, I had a Summit fuel pump rated at 110 GPH, 6-8 PSI with an internal pressure shut off valve.
My car was pretty dialed in and we were getting it sounding pretty good.
I found a fuel leak on the housing of the fuel pump, who builds a fuel pump out of cast aluminum, best I can figure is at the outlet port I must have overtightened the fitting, last year, creating a crack, but I didn't notice it, now that the car is running, engine in place the vibration/over revving, I am sure I've been stressing it, lol
SO here we are, I go to ORiley's and buy part number M23017 fuel pump, says direct fit for 409/340.
Flow Rate : 50 GPH, Pressure Rating : 6PSI
So in my opinion and talking with Don, my flows and pressure is much lower than the original, and my lower HSP motor should respond fine to that, I agree with his Thinking, makes sense.
On re-firing the engine, suddenly the Brand new Edelbrock AV2 1906 is flooding the heck out of itself, literally dripping fuel, heavy at the throttle levers/base/carb base.
The only thing that changed was the fuel pump??? I should add, and I forgot to tell Don this, the new fuel pump has a inlet and a outlet port obviously, but there is a third port, a vent maybe? it had a protective cap on it, so I left it on, maybe its got to have ability's to breathe and I am doing something wrong there?
Done had some great ideas to check, 1 check output pressure at fuel pump, I am going to get a lower scale pressure gauge this morning to test that, good starting point.
He also thought maybe some crud or debris up in the needle area, I'll keep ya all posted on that test, should be later today.
The joys of working out the bugs to make it a reliable dependable car, after a major overhaul...........
My car was pretty dialed in and we were getting it sounding pretty good.
I found a fuel leak on the housing of the fuel pump, who builds a fuel pump out of cast aluminum, best I can figure is at the outlet port I must have overtightened the fitting, last year, creating a crack, but I didn't notice it, now that the car is running, engine in place the vibration/over revving, I am sure I've been stressing it, lol
SO here we are, I go to ORiley's and buy part number M23017 fuel pump, says direct fit for 409/340.
Flow Rate : 50 GPH, Pressure Rating : 6PSI
So in my opinion and talking with Don, my flows and pressure is much lower than the original, and my lower HSP motor should respond fine to that, I agree with his Thinking, makes sense.
On re-firing the engine, suddenly the Brand new Edelbrock AV2 1906 is flooding the heck out of itself, literally dripping fuel, heavy at the throttle levers/base/carb base.
The only thing that changed was the fuel pump??? I should add, and I forgot to tell Don this, the new fuel pump has a inlet and a outlet port obviously, but there is a third port, a vent maybe? it had a protective cap on it, so I left it on, maybe its got to have ability's to breathe and I am doing something wrong there?
Done had some great ideas to check, 1 check output pressure at fuel pump, I am going to get a lower scale pressure gauge this morning to test that, good starting point.
He also thought maybe some crud or debris up in the needle area, I'll keep ya all posted on that test, should be later today.
The joys of working out the bugs to make it a reliable dependable car, after a major overhaul...........