Fuel pump
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From: San Marcos, Tx
Fuel pump OK, Im upping the HP on my engine with the new build and may go with a different fuel pump setup. Currently running dual Bosch 044 pumps. I plan to get as mush as I can out of this stock block. Before anyone asks its just the block that is stock. 6.0 Iron. I know they can break at 1300hp but have seen much more. I will be near 1200-1300 easy with all I can get out of this current turbo and want to get to 1500+ with another turbo setup later. Race gas, not corn or alky.
So. What electric pump would be best? I've looked at the 4303 but Im not sure if its enough for a boosted application.
So. What electric pump would be best? I've looked at the 4303 but Im not sure if its enough for a boosted application.
Mines not running yet but I’m running an AEM 380 as a primary and a 4303 on a Hobbs switch and a main switch. I can run the 4303 at a preset boost pressure for the street or full time at the track. In theory the MF pump is good to 1300 and the AEM is good to 600 or so. Idk if my “ricer math” is correct but I should be good to 1900 And still have a quiet pump for street cruising.
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From: San Marcos, Tx
My twin 044 setup is the same. 1 runs for cruising and the 2nd comes on at 6psi boost which is controlled by my MS3 gold box. I am looking for more pump and maybe just running a single pump since its really not street driven anymore except for the 20 to 30 mile cruise before the races.
we just got our first mechanical pump setup running and with out a primer pump, it sucks.
THis car is a front cell, very short lines and 16volt system and its still not easy to start.
The initial prime was a night mare. We had to prime the system with a drill.
If you want to stay electric, run one of ur 044s as primary and do a 4703 secondary. That should get you close. If you put the truck on 16v or maybe even a BAP, then it should be realistic.
THis car is a front cell, very short lines and 16volt system and its still not easy to start.
The initial prime was a night mare. We had to prime the system with a drill.
If you want to stay electric, run one of ur 044s as primary and do a 4703 secondary. That should get you close. If you put the truck on 16v or maybe even a BAP, then it should be realistic.
Fuel System Tesh Hi Burt, I raced a Lola 332/333 (1975-1995) and used Lucas Mark I Sequential High Pressure Injection Timed to an OPEN VALVE. (Mechanical)
MY starting was easy as the Lola OEM fuel system used a High Pressure Starting Pump. (Lucas Electric)
This method will work fine for your needs, just be sure to place a Check Valve on the Start Pump outlet.
I like the Waterman Pumps better than Hilborn Pumps.
I would fit an in tank cable pump. (NASCAR "take-off)
I can engineer your/provide your fuel system with a good price using Waterman components.
Lance
MY starting was easy as the Lola OEM fuel system used a High Pressure Starting Pump. (Lucas Electric)
This method will work fine for your needs, just be sure to place a Check Valve on the Start Pump outlet.
I like the Waterman Pumps better than Hilborn Pumps.
I would fit an in tank cable pump. (NASCAR "take-off)
I can engineer your/provide your fuel system with a good price using Waterman components.
Lance
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Verdad Gallardo Hi Burt, I raced a Lola 332/333 (1975-1995) and used Lucas Mark I Sequential High Pressure Injection Timed to an OPEN VALVE. (Mechanical)
MY starting was easy as the Lola OEM fuel system used a High Pressure Starting Pump. (Lucas Electric)
This method will work fine for your needs, just be sure to place a Check Valve on the Start Pump outlet.
I like the Waterman Pumps better than Hilborn Pumps.
I would fit an in tank cable pump. (NASCAR "take-off)
I can engineer your/provide your fuel system with a good price using Waterman components.
Lance
MY starting was easy as the Lola OEM fuel system used a High Pressure Starting Pump. (Lucas Electric)
This method will work fine for your needs, just be sure to place a Check Valve on the Start Pump outlet.
I like the Waterman Pumps better than Hilborn Pumps.
I would fit an in tank cable pump. (NASCAR "take-off)
I can engineer your/provide your fuel system with a good price using Waterman components.
Lance
Much appreciated, but i think we will just end up putting an electric primer pump with a check valve and be done with it.
Once the engine gets any decent RPM in it, the mechanical comes right up to pressure. Its just cranking that blows.
Keep your dual 044's and add a 4303 in parallel in boost only. Should be plenty of pump. Or add another 2 AEM 380's. On paper the dual 380's flow more than the 4303. Just not as good of a pump IMO.
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From: San Marcos, Tx
I was considering keeping 1 044 and adding the 4303 under boost. Not sure if that would be enough or not though.
I will be around 70psi fuel pressure at 25psi if the turbo cant get there for my setup.
I will be around 70psi fuel pressure at 25psi if the turbo cant get there for my setup.
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this should work especially on gas just make sure you feed the 4303 with -12
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Yea, most will show the twin 044 setup will get to about 1000hp. Ill be around 12-1300 to start with. I think an 044 with the 4303 will work for me. I currently have -10 feed lines to my 044's.
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From: Norn Iron
Considering many will claim a crappy old Walbro 255 can do 5, 6 maybe 700hp...which seems a fantasy, and the 044 is well proven above the 255 Walbro.
1000hp on race fuel is in no way a trouble or even pushing a pair of 044's
Most sellers in the US claim the 044 is a 7-800hp pump, although again I'd maybe question their numbers a little, but a pair should do 1300hp without a problem.
As to whether the AEM pumps do actually flow more than an 044....Having used a pair of the AEM's now for a year, and a pair of 044's prior to that for over 10 years. I'd be a little sceptical about their claims as I seen absolutely no change in behaviour between the two setups.
If you genuinely do want an electric pump that flows a lot...there are some modern brushless options, but they're a ******* fortune. But a pair of those could easily do 2k+
it'd be a lot easier and cheaper just to run a 3rd pump to what you currently have.
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From: Norn Iron
Fuelab's brushless offering, with built in PWM control as long as you can provide it a signal
They claim 1800hp for a single, although I'm sure reality at higher pressures used would be lower.
http://fuelab.com/products/race/prod...r_efi_in_line/
4303 makes huge claims....at carb pressures. EFI probably half that at best.
Of course another cheapish/easy option using what you currently have...boost a pump.
They claim 1800hp for a single, although I'm sure reality at higher pressures used would be lower.
http://fuelab.com/products/race/prod...r_efi_in_line/
4303 makes huge claims....at carb pressures. EFI probably half that at best.
Of course another cheapish/easy option using what you currently have...boost a pump.