gpm of water to run a mercruiser on hose
#31
Registered
Grand Sports center has a prop dyno they`ve been using forever. I don`t think Paul visits here too often but I bet he`d know how they run it. Ask for Mark I bet he`ll tell ya.
Otherwise do you have one of these close by ???
Otherwise do you have one of these close by ???
#32
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I'm guessing if he has a well prob not lol
#33
Registered
I've had a hose come off my cooler right after the pump at 70mph. Within seconds, I had a bilge full of water. The first thing I noticed, before even the engine temp climbed, was my bilge pump LED light come on while running.
http://www.pumpagents.com/pdf/Jabsco...43210-0001.pdf
http://www.pumpagents.com/pdf/Jabsco...43210-0001.pdf
#34
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#35
Registered
#36
Trying to tie in all the bits and pieces others have said and from my own experience running on a stand with a Bravo pump I offer the following:
Pump flow rate is in the 10-70 GPM range.
Don't try to feed the pump, let it 'eat' from a large source/reservoir.
Keep the input flow from hose/well/ etc. at max rate
Try to recoup exhaust water to the max extent possible.
Total volume of reservoir will will determine max run time.
At idle to 1500 rpm I could drain a reservoir of about 2 x 4 x 1 ft dimensions with an input of 5 gal per min and recovering about 80% of the exhaust water in about 3-5 minutes. Watch the intake hose so that debris doesn't get in the way. I had a rag fall in the tank....ooops. Caught it quickly though.
Pump flow rate is in the 10-70 GPM range.
Don't try to feed the pump, let it 'eat' from a large source/reservoir.
Keep the input flow from hose/well/ etc. at max rate
Try to recoup exhaust water to the max extent possible.
Total volume of reservoir will will determine max run time.
At idle to 1500 rpm I could drain a reservoir of about 2 x 4 x 1 ft dimensions with an input of 5 gal per min and recovering about 80% of the exhaust water in about 3-5 minutes. Watch the intake hose so that debris doesn't get in the way. I had a rag fall in the tank....ooops. Caught it quickly though.
#37
Registered
Need to keep in mind, these flexible impeller pumps, flow a different volume of water when they are sucking, compared to what they flow, when being force fed, like in a boat at speed. .
Smitty, anyway you could simply buy one of those big plastic tanks, mount it up higher than the dyno, run a decent sized pipe to the engine area, and let gravity handle feeding the sea pump assembly, rather than trying to 'suck' the water from the tank? Then use a well pump to refill the tank back up when it runs low.
Smitty, anyway you could simply buy one of those big plastic tanks, mount it up higher than the dyno, run a decent sized pipe to the engine area, and let gravity handle feeding the sea pump assembly, rather than trying to 'suck' the water from the tank? Then use a well pump to refill the tank back up when it runs low.
#38
Platinum Member
Platinum Member
Thread Starter
[QUOTE=ICDEDPPL;4363538]Never been on a well but yeah that makes sense! LOL
They call the fire department where i live " the foundation fire dept" because they can usually get fire out about when it reaches the foundation! Alot of houses out here have ponds for fire reasons , not just looks. To me its just a mosquito breeding grounds
They call the fire department where i live " the foundation fire dept" because they can usually get fire out about when it reaches the foundation! Alot of houses out here have ponds for fire reasons , not just looks. To me its just a mosquito breeding grounds
#39
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#40
Charter Member#568
Charter Member
As far as running on the dyno, the place that did mine had a tank about the size of a hot water tank that recirculated the water. The water temp rose from 165 to 175 during the pull. You can see the tank on the left
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Straight bottoms and flat decks
Straight bottoms and flat decks