any one here know of the flow rate of magnafuel's 4303 pump , or maybe their 4103 pumps?
need a pump that can support 160 lbs/hr injectors and blown 1600 RWHP.

thanks

 

www.magnafuel.com
Looks like a 4404 is about the right size??? 4301 stops @ 2000FWHP... I'm betting that's a N/A rating.
@1600RW, a 2000FW pump won't "cut the mustard".

 

thanks old geezer, but i already checked the site out. i need the flow rate in gph or lbs/hr if at all possible.

and here's a side question what are the fitting sizes that go inot these pomps? -8 oring? 3/4 npt??

 

they are rating the pumps at N/A HP levels, then at .5 bsfc, it'll take 163#/hr, at 6.14#/gallon. [2000FW x .5/6.14=163#/HR]

I'd call them, and get the exact specs..
As for the fittings: They are straight thread w/ o'rings.

 

-8an are the fittings

 

Have you called them yet -- they should be able to give you the flow figures. How big an engine and what type of blower -- this has a direct effect on the size of fuel pump required. I take it this is also just used in racing.

If you had a pump and need it flowed -- I can get that done, I'll even print off a chart for you. If its one of mine (Weldon) I can tell you what it flows without flowing it.

 

Be sure to get flow numbers at the pressure you will be running at. Flow numbers at 10psi do you know good if your running 45psi base. You will also need to know what battery voltage they are using to flow the pump. Flowing the pump @ 16 volts does not help you if your running a 12 volt battery. Also sense it is supercharged get the flow rate at your pressure plus whatever boost you will be running. If your 45 PSI base and 30lbs of boost make sure the pump can support your HP at 75psi.

Here is a good example of a flow chart.

http://www.aeromotiveinc.com/prod_im...-1-2-large.jpg

 

Nothing against that chart, but here's a little bit better one -- shows flow vs. pressure with amp draw:

http://www.weldonracing.com/~weldon/...5%20Series.pdf

Also, when you purchase a Weldon Pump it comes with its own unique flow sheet (just like the example), but is the exact flow specs for that unit. We test our pumps on 14 volts, since most electical systems operate at or a little below 14 (if your charging system is operating correctly).

 

That is a nice flow chart. Never use Weldon stuff so I have never been to that site. Most of the stuff we do runs closer to the 12 volt mark than 14 so your chart doesn't do me much good.

Maybe a flow chart at 12-13-14-15-16 volts would be the best.

 

MP-4303 flows 2.7GPM. I have done systems with 2 4301-3 for high Hp motors second one kicking on under boost.

Nate

 

What pressure was it flowed at? What battery voltage? More info that means nothing.

 

I run special flow charts for individuals when they aren't using normal automotive electrical systems (outboard drag boats, bass boats, snowmobiles, etc). Also for guys that are inputting correction factors in thier ecu's when they encounter diminishing voltage throughout a run -- but for us to include those different test levels (for very few people) is unfortunately out of the question.

You can also extrapolate the different flows using a 14 volt chart vs a 16 volt chart. For instance, our 2345-A will flow on average 210 gph @ 80 psi with 14 volts. Now increase the voltage to 16 and you'll see and increase in flow to 260 gph @ 80 psi. So you'll know with a 1 volt increase or decrease the 2345-A will flow go + / - 25 gph @ 80 psi, this flow increase / decrease can be seen anywhere along the 0 - 80 pressure range.

Why the interest in having those different flow levels?

 

I'm really not interested in flow level at any voltage but 12V. If the pump will support what I need at 12 volts then a customer that uses an alternator will be extra safe. If a guy looks at flow at 14 volts and is on the verge of not being enough he could be in deep trouble if he ever throws an alternator belt or decides at a later date he doesn't want to run an alternator.(forgetting that his flow rate was based on 14 volts)

 

Fair enough -- call me if you've ever got a question about Weldon Racing Pumps or if you're looking to get a pump tested.
Jim Craig -- Edit

 

At what poitn have you ran a 4301 out of steam?

 

Really depends on the setup but I have seen 1200rwhp out of them. Turbo car should be able to make over 1000rw on one. I really never get to max as I tend to over fuel so they are really safe.

Nate

 

blower car on a stingy dyno, 800 shoudl still be easy for it right?