Go Back  Offshoreonly.com > Technical > General Q & A
gpm of water to run a mercruiser on hose >

gpm of water to run a mercruiser on hose

Notices

gpm of water to run a mercruiser on hose

Old 10-07-2015, 06:13 PM
  #31  
Registered
iTrader: (1)
 
Join Date: Jun 2009
Location: Chicago
Posts: 8,689
Received 4,235 Likes on 1,216 Posts
Default

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 ???


ICDEDPPL is offline  
Old 10-07-2015, 06:25 PM
  #32  
Registered
iTrader: (5)
 
Join Date: Jul 2009
Location: Taunton Ma
Posts: 8,527
Received 698 Likes on 341 Posts
Default

I'm guessing if he has a well prob not lol
Unlimited jd is offline  
Old 10-07-2015, 06:34 PM
  #33  
Registered
 
Join Date: Feb 2010
Location: Plano, Texas
Posts: 608
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by MILD THUNDER
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
Mine popped off the discharge side of the pump coming on plane and pumped the 27' full within 100 yards/seconds. Bilge pump ran for 45 minutes.
Hook'em is offline  
Old 10-07-2015, 06:35 PM
  #34  
Registered
iTrader: (1)
 
Join Date: Jun 2009
Location: Chicago
Posts: 8,689
Received 4,235 Likes on 1,216 Posts
Default

Never been on a well but yeah that makes sense! LOL

Off subject but when you`re on a well and your house is on fire the fire truck brings their own water and when they run out you`re sol?


Originally Posted by Unlimited jd
I'm guessing if he has a well prob not lol
ICDEDPPL is offline  
Old 10-07-2015, 06:37 PM
  #35  
Registered
iTrader: (1)
 
donzi matt's Avatar
 
Join Date: Jul 2003
Location: Moultonborough NH
Posts: 1,339
Received 7 Likes on 5 Posts
Default

Originally Posted by ICDEDPPL
Never been on a well but yeah that makes sense! LOL

Off subject but when you`re on a well and your house is on fire the fire truck brings their own water and when they run out you`re sol?
"Well, were out of water, who brought the marshmallows and sticks?' lol
donzi matt is offline  
Old 10-07-2015, 06:40 PM
  #36  
Registered
 
Join Date: Jun 2011
Posts: 1,164
Received 110 Likes on 82 Posts
Default

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.
Trash is offline  
Old 10-07-2015, 06:43 PM
  #37  
Registered
iTrader: (3)
 
Join Date: Jul 2004
Location: chicago
Posts: 11,332
Received 71 Likes on 39 Posts
Default

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.
MILD THUNDER is offline  
Old 10-07-2015, 08:21 PM
  #38  
Platinum Member
Platinum Member
Thread Starter
iTrader: (1)
 
articfriends's Avatar
 
Join Date: Jun 2004
Location: frankenmuth michigan
Posts: 7,130
Received 798 Likes on 366 Posts
Default

[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
articfriends is offline  
Old 10-07-2015, 08:28 PM
  #39  
Registered
iTrader: (1)
 
Join Date: Jun 2009
Location: Chicago
Posts: 8,689
Received 4,235 Likes on 1,216 Posts
Default

http://chicago.craigslist.org/sox/for/5248126031.html


http://chicago.craigslist.org/sox/for/5248125395.html

http://chicago.craigslist.org/wcl/grd/5252979393.html
ICDEDPPL is offline  
Old 10-07-2015, 09:32 PM
  #40  
bck
Charter Member#568
Charter Member
 
bck's Avatar
 
Join Date: Dec 2000
Location: Western N.Y.
Posts: 2,171
Received 16 Likes on 14 Posts
Default

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
Attached Thumbnails gpm of water to run a mercruiser on hose-imag0417.jpg  
__________________
Straight bottoms and flat decks
bck is offline  

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.