190lph in series with bosch 044?

[compression]

i have an evo 8 fuel pump which is comparable to the 190 walbro and i have a bosch 044. i was going to use a fuel cell but the class regulations state that fuel cells are prohibited, so im going to be installing my old fuel tank and i was going to run the 190 feeding the 044 is this a feasable solution? i have ass loads of -8 fittings and line. the only fitting i dont have is a bulk head, but i think i solved that problem. i just used a regular fitting , and assembled the fitting on the line on each side of the fuel pump housing. how much pressure is in between the 2 pumps there are no barbs on the evo pump, but i got it to work with the stock o ring crap and just cut the tube and double hose clamped a rubber hose to it, then i assembled the -8 90* fitting as you would a bulkhead and sure looks like it would work well i would take pictures if i had a camera. also where the housing bolts to the tank 2 of the studs are rusted/stripped so i cant put 2 of the nuts on , would this be a bad problem , could i just silicone around any potential gaps? just afraid of fuel splashing on the ground at the track ( i doubt i would have any problems but just playing it safe. will my evo 8 fuel pump be a sufficient feed pump for the bosch 044 or will it not flow enough?

 

[99gst_racer]

If it were me, I'd run just one 044 pump in the tank. You don't need that 190 pump - especially not the EVO8 pump. Believe it or not, due to the internal pressure relief valve in it, the EVO8 pump will flow ZERO at 35+ psi of boost. After 20+ PSI, flow drops off like a rock.

Plus, a small feeder pump (falling off) feeding a large pump, could cause that large pump to cavitate. I don't now this for fact, but I've personally seen similar set-ups where the larger pump failed prematurely and cavitation was a suspect. It might be something worth looking into.

 

[compression]

i have so many fittings, i just dont see myself buying another 50$ fitting for the fuel sock crap for it. ive heard good things about the 255 and the 044 in series. maybe ill just upgrade the intank to a 255. i want to have an adequate fuel supply for high 9's low 10 second et's

 

[compression]

see theres the 2 studs that are rusted stripped.

<a href="http://photobucket.com" target="_blank"><img src="http://i48.photobucket.com/albums/f224/mxdawg121/PICT0027.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>

<a href="http://photobucket.com" target="_blank"><img src="http://i48.photobucket.com/albums/f224/mxdawg121/PICT0028.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>

<a href="http://photobucket.com" target="_blank"><img src="http://i48.photobucket.com/albums/f224/mxdawg121/PICT0030.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>

<a href="http://photobucket.com" target="_blank"><img src="http://i48.photobucket.com/albums/f224/mxdawg121/PICT0031.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>

<a href="http://photobucket.com" target="_blank"><img src="http://i48.photobucket.com/albums/f224/mxdawg121/PICT0032.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>

<a href="http://photobucket.com" target="_blank"><img src="http://i48.photobucket.com/albums/f224/mxdawg121/PICT0033.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>

and what is this little doomihicky thingy for ?
<a href="http://photobucket.com" target="_blank"><img src="http://i48.photobucket.com/albums/f224/mxdawg121/PICT0034.jpg" border="0" alt="Photo Sharing and Video Hosting at Photobucket"></a>

 

[compression]

If it were me, I'd run just one 044 pump in the tank. You don't need that 190 pump - especially not the EVO8 pump. Believe it or not, due to the internal pressure relief valve in it, the EVO8 pump will flow ZERO at 35+ psi of boost. After 20+ PSI, flow drops off like a rock.

Plus, a small feeder pump (falling off) feeding a large pump, could cause that large pump to cavitate. I don't now this for fact, but I've personally seen similar set-ups where the larger pump failed prematurely and cavitation was a suspect. It might be something worth looking into.

that was originally a big fear of mine having the lines run dry in between the pump and cavitating but i just cant see how the fuel pump would suck more through the inlet with just a hose, then having it forcefed even by a little 190lph. but im not sure thats why i turn to dsmtuners for advice.

 

[99gst_racer]

What about twin 255's? One in-tank and one in-line.

Honestly, running two pumps in parallel is going to net much more flow than any combination in series. The only thing better about series is that flow won't drop nearly as bad with increased pressure.

Have you seen this?

 

[2gGSX]

What about twin 255's? One in-tank and one in-line.

Honestly, running two pumps in parallel is going to net much more flow than any combination in series. The only thing better about series is that flow won't drop nearly as bad with increased pressure.

Have you seen this?

I love Chewy. This test has also been verified by someone on the DSMLink forums (Jeff Takeuchi). He found that for his fuel setup at 12.1V to the pumps, a 255HP/044 in series took 37.5 seconds to fill a 1 gallon container up to 90%, and a 255HP/044 in parallel took only 19.4 seconds to fill the same container up to the same 90% mark.

 

[Zmann42087]

You don't need that 190 pump - especially not the EVO8 pump. Believe it or not, due to the internal pressure relief valve in it, the EVO8 pump will flow ZERO at 35+ psi of boost. After 20+ PSI, flow drops off like a rock.

Unfortunately this is completely true... just check out AMS's fuel pump test.

Thats why I decided not to install the EVO VIII fuel pump I just bought. Instead I'm going with an EVO IX fuel pump.. no pressure relief valve to ruin things.

 

[compression]

running in parallel with 2 different size pumps, wouldn't that cause the stronger pump to back feed the weaker pump? yea it flows more at free flow, but under pressure for an extended period of time? i just decided to go with putting the 044 in the tank , theres no problems with that right? like its completely submersible? the only thing is the way i have it , its really close to the bottom of the gas tank , which i beat the gas tank down under the pump so theres about 1/2 inch in between the pump and the tank, no fuel sock or anything but the 044 has a screen on the inlet side plus im going to run an aftermarket fuel filter anyhow. i have a fuel pressure gauge in which i will be able to moniter the fuel pressure , if i have any issues i will just go with another bosch 044 on the same line just near the firewall ( in series right? )

 

[compression]

Unfortunately this is completely true... just check out AMS's fuel pump test.

Thats why I decided not to install the EVO VIII fuel pump I just bought. Instead I'm going with an EVO IX fuel pump.. no pressure relief valve to ruin things.

i understand that , but would there be 65 psi in the line between the 2 pumps?

and for the price of a used evo pump which could be from 25-50 $ ( i got mine for 15$) you cant tell me its a horrible pump especially for a 16g powered monster , ive gone low 12's with this pump and minimal other mods.

 

[compression]

and as far as the fuel pump housing bolting to the tank, if anybody was curious the size of the studs are 5mmx80 i just tapped them. ( or for search reference )

 

[99gst_racer]

Yeah, there's nothing wrong with an 044 in the tank. Should be a solid set-up.

i understand that , but would there be 65 psi in the line between the 2 pumps?

I don't understand this question. What exactly are you asking?

 

[compression]

Yeah, there's nothing wrong with an 044 in the tank. Should be a solid set-up.



I don't understand this question. What exactly are you asking?

evo 8 fuel pump======(would there be 65 psi here?)========bosch 044=============fuel rail

 

[99gst_racer]

evo 8 fuel pump======(would there be 65 psi here?)========bosch 044=============fuel rail

Good question, I suppose. When ran in parallel, I know that both pumps are running at the same fuel pressure. In series, I would assume the same, but I'm not 100% sure about that.

 

[project_tsi]

Run the 190 in tank as a feeder to the 044 inline. I run a 255 in tank feeding an 044 inline with -8 lines and the setup is good for 700+whp on gasoline.

Any pump, whether it be a 255, a 190, or even a STOCK pump being used as a feeder pump will boost the 044's output even higher than if were ran by itself in tank.

If I ever re-do my fuel setup again, I'm going to modify the pump assembly and run 2 044's in tank in parallel, as parallel will only boost fuel supply even greater.

Another member recently ran tests on his fuel system. With the same setup as my self with a 255 feeding an 044 with -8 lines, it took about 37 seconds to fill a 1 gal jug with gas. With the same 2 pumps ran in parallel with -8 lines meeting at a -8 Y-block it took only 19 seconds to fill the 1 gal jug.

 

[compression]

ok , how much pressure would be in between the 2 pumps with a 190lph as a feeder, you know i really wish somebody would have told me this before, ive changed my fuel system like 5 times allready. i had the pump all in place ready to bolt in! . now i have the 044 in tank
if i have to upgrade later it will be another 044 in series upstream.

i originally had a 10 gallon fuel cell with 2 -8 outlets i was going to run dual 044's with a y block the y block is like 50$ itself. but class regulations state that fuel cells are prohibited.