mo balls than $cents$
how many gph does it take to feed 2 dominators? putting them on a bds 8-71 ontop of a 9 to 1 540 . does anyone make a mechanical fuel pump that'll get the job done without a regulator?
Why go to all that work, and not just run a reg. and be done with it. Jeezzzz...some guys just gotta make things difficult!superdave on these boards, he sells Clay Smith mech pumps, good guy price, you what the 1/2" high pressure pump. If you get it, take it apart and remove the inner spring. Yhat will lower the pressure enough that you don't need a reg. This is the pump EVERY SINGLE blown GN circle boat is useing except with the inner spring and a reg. If it can't keep up, you will have to put the spring back in and get a reg.
you guys think this 1 will get r done?actually MR. Steel, I personally run 2 regs. One on each carb with a balance line between. He just asked for a recomment with out a reg and I thru in my two cents. On the other hand, you had to go and hit the poor guy with advanced calculis. PS how ya been, keeping busy?
will do, he's got a dash mounted fuel pressure gauge and we're gonna try to run it without a regulator at all. i can't see that pump pushing pressure past 4 hi volume needles and seats, but shit happensst carb kits won't be here till next wed , so it'll be the weekend after this 1 before we get the boat wet.if it works out fine, we're tearing it all back apart and putting nitrous plates under the dominators devil putting a electric pump/seperate tank on that systemlet me know how it works out, thinking of one those for another deal I am putting together Thanx
done went and made me worried now st so is the 170gph holley pump i linked to not gonna cut it?The flow graphs for there '170gph' rpm vs 0 pps vs 4.5psi are found here:
I found making the viewer at 400% made it easier to read.
Hope this helps.
BTW: the previous page has charts for their 80,110,130 pumps.
LOL..yes, too busy.actually MR. Steel, I personally run 2 regs. One on each carb with a balance line between. He just asked for a recomment with out a reg and I thru in my two cents. On the other hand, you had to go and hit the poor guy with advanced calculis. PS how ya been, keeping busy?
i learned something new today devil i'll be looking a for a chart from now on thanx for the infoYeh, as we all know, or should know, free flow means dogschit. We need the fuel pump 'dyno' (as I call it) graphs. It will help make a better decision since a little more real world vs marketing BS.
That said, any electric fuel pump company worth a poop will also have such graphs. In fact, they tend to be a little more detailed and include more data.
Volts vs psi along with showing amperage draw and fuel volume output.
Here's a Walbro chart:
FYI, I am running that exact pump on my BBF. 521, dual Dom's flowing 1120each, 8-71 10% under at the time (now 8 over), no regulator, -8 from each tank to filter/seperator, -8 from seperator to fuel pump, -8 pump to distribution block, -6 to each carb. A tick under 8lbs at idle, and a tick above 6 at WOT.you guys think this 1 will get r done?
says shut off pressure is at 8-9psi