gpm of water to run a mercruiser on hose
#11
Banned
To further break that down the bare min spec thru from the output side of the Impeller housing is 10 gallons per minute again the bare min of water
Last edited by BUP; 10-07-2015 at 03:37 PM.
#12
Registered
Jabsco marine says 10 gallons per minute, per 100hp of flow is needed. So, a 500hp engine, would need 50 gallons per minute, or 3,000 gallons per HOUR of flow. A 1000hp deal, would need 6000 gallons per HOUR according to that.
I have a flow chart at home of what the jabsco merc style sea water pump can move at various inlet pressures. Its actually pretty amazing how much water they can move!
I have a flow chart at home of what the jabsco merc style sea water pump can move at various inlet pressures. Its actually pretty amazing how much water they can move!
Last edited by MILD THUNDER; 10-07-2015 at 06:01 PM. Reason: typo
#13
Charter Member#568
Charter Member
Even with a different well seems like you wouldn't be able to keep up. Get one of those big white plastic tanks like they use for horses that hold hundreds of gallons and can be transported in the bed of a truck. Use that as a buffer with your current well feeding it ? I've seen the up to 550 gallons for under $500 new
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Straight bottoms and flat decks
Straight bottoms and flat decks
Last edited by bck; 10-07-2015 at 03:40 PM.
#14
Were doomed!
Charter Member
MT, your math is flawed......it would be 3000 and 6000 gallons per hour not minute...the 1000hp motor would need 100 gallons per minute...
__________________
-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
#15
Banned
Joe with that volume of water flow you would sink a boat in a minute as no bilge pump in the would keep up with that volume if ever any output hose engine side would ever break or come off while running.
I do not know of any gas side marine water pumps / impellers that could ever pump that much volume water especially thru drive inlets and a 1 inch to 1 1/4 inch inlet and outlet hoses
Can Fire trucks pump that much volume water in a minute / Just asking .
I do not know of any gas side marine water pumps / impellers that could ever pump that much volume water especially thru drive inlets and a 1 inch to 1 1/4 inch inlet and outlet hoses
Can Fire trucks pump that much volume water in a minute / Just asking .
#16
Platinum Member
Platinum Member
Thread Starter
I plan on using a tank to buffer it too but my current well puts out about 6 or 8 gpm for a few minutes plus 40 or 50 gallons from the 60 gallon exp tank, def upgrading as i dont want to stand around all day waiting for tank to fill
#17
Were doomed!
Charter Member
Joe with that volume of water flow you would sink a boat in a minute as no bilge pump in the would keep up with that volume if ever any output hose engine side would ever break or come off while running.
I do not know of any gas side marine water pumps / impellers that could ever pump that much volume water especially thru drive inlets and a 1 inch to 1 1/4 inch inlet and outlet hoses
Can Fire trucks pump that much volume water in a minute / Just asking .
I do not know of any gas side marine water pumps / impellers that could ever pump that much volume water especially thru drive inlets and a 1 inch to 1 1/4 inch inlet and outlet hoses
Can Fire trucks pump that much volume water in a minute / Just asking .
__________________
-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
#18
Were doomed!
Charter Member
just did a quick search of fire trucks too....they are running a 2.5" line at 150 psi and discharging a min of 250gpm...but i saw another posting where the pumps on these trucks are now in the 1500-2000 gpm range!! wow!
the output gpm will all depend on how much pressure the pump can make and how much friction its fighting against with th e length of line...the size of the line...any fittings, discharge nozzle size etc...
the output gpm will all depend on how much pressure the pump can make and how much friction its fighting against with th e length of line...the size of the line...any fittings, discharge nozzle size etc...
__________________
-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
#19
Registered
#20
Banned
and do not forget especially with Merc is pulley size & ratio along with belt set ups and pump speed.
there is no way a stock bravo pump is going to pump a 100 gallons per min NO WAY IN THE WORLD and I doubt a gas size crank mounted pump will either that is NOT custom made. You would have to spin that crank mount so fast to get that kind of water volume output ( I am talking about 100 gallons of water output completely discharged) . It can not even completely run thru your engine that fast of a 100 gallons of water per minute. No way you could ever pass that much volume of water thru a t stat alone along with exhaust water jackets especially the restricted riser gaskets.
there is no way a stock bravo pump is going to pump a 100 gallons per min NO WAY IN THE WORLD and I doubt a gas size crank mounted pump will either that is NOT custom made. You would have to spin that crank mount so fast to get that kind of water volume output ( I am talking about 100 gallons of water output completely discharged) . It can not even completely run thru your engine that fast of a 100 gallons of water per minute. No way you could ever pass that much volume of water thru a t stat alone along with exhaust water jackets especially the restricted riser gaskets.
Last edited by BUP; 10-07-2015 at 04:08 PM.