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TOPIC: recommend an auto bilge pump for a 175

recommend an auto bilge pump for a 175 07 Feb 2010 00:08 #1

  • crobertbailey
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Hi all
I have been reading up on this but am lost on what to buy, father has a '08 175 and we would like pump that would be a relatively straight swap for the oem one, also it would need to be an online sale as we are on the west coast of scotland
Thanks
Robert

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recommend an auto bilge pump for a 175 07 Feb 2010 00:40 #2

  • Salty Tricks
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Robert

Can you tell us what OEM pump is installed now. Bilge pumps have different sizes for their discharge. Typically 3/4" (19MM) and 1 1/8" (28mm). If you do not want to increase the size of the discharge thru-hull fitting you will be limited on what size pump you can buy.

Michael

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1989 Bayliner Trophy 2302
1998 Evinrude 225 Ocean Pro

recommend an auto bilge pump for a 175 07 Feb 2010 03:31 #3

  • bwmarine
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recommend an auto bilge pump for a 175 07 Feb 2010 16:59 #4

  • JimMc
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crobertbailey

You asked about automatic bilge pumps. There are two major types of pumps
  • automatic bilge pumps (These pumps run every 2 or 3 minutes very briefly. If they sense an increase in current draw because of the amount of water they are pumping they will continue to pump until the current draw falls off.
  • a pump with a float / level sensing switch (These pumps have a moving float that rises with water level or an electronic switch that has contacts. With both of these when the water gets up to a specific level they provide power to the power the connected pump.
On our boat I have all types of pumps
  • Automatic Bilge Pump
  • Float controlled Bilge Pumps ( A float switch and a pump. )
  • Electronic level sensing controlled pumps ( An electronic switch like the "Water Witch" and a pump. )
My personal experience with the automatic bilge pumps is that it's ongoing cycling drives me crazy.

I like the Electronic level sensing controlled pumps they hesitate slightly just to prevent false operation, they run for 10 seconds past the point the water is below the trip point to help finishing the clean up. The Water Witch switch will not actuate in the presence of petroleum products so an oil or fuel leak will not be pumped overboard.

Also consider that a small boat will sink faster than a large boat given the same amount of water coming in. So I would lean towards a bit larger pump.

My 2 cents.

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Jim and Debbie McNeely
New Hope a 2004 Bayliner 305 Sunbridge Express Cruiser
Twin 5.7s with Bravo2 drives
Brighton, Michigan USA
MMSI # 367393410

recommend an auto bilge pump for a 175 08 Feb 2010 00:18 #5

  • Matt's 175
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2006 Bayliner 175
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recommend an auto bilge pump for a 175 08 Feb 2010 01:34 #6

  • tbear
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Salty Tricks;415771 wrote: Robert

Can you tell us what OEM pump is installed now. Bilge pumps have different sizes for their discharge. Typically 3/4" (19MM) and 1 1/8" (28mm). If you do not want to increase the size of the discharge thru-hull fitting you will be limited on what size pump you can buy.

Michael


Generally for the 3/4" discharge you are looking at 750=800 GPH max. After 800 the hose and thru hull must be upgraded to 1 1/8".

Although Attwood is of a "cheaper" design (not tinned wire) I have never had a failure and they actually out perform more expensive brands like Rule, but are typically for smaller bowriders, and their most popular sizes are 500 and 750 GPH.

I upgraded the 500 Attwood in my old BR to the Attwoood 750 GPH and never had a problem. Separate float switch.

I upgraded hose and thru hull in my cuddy to bump the old diaphragm style (maybe 200 GPH) to an 1100 GPH Rule. Separate float switch. When you have the integrated units, they get expensive. JMO

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recommend an auto bilge pump for a 175 08 Feb 2010 04:21 #7

  • billstoudt
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i have 2 Rule Mate 750s its total overkill for my little boat but rather too much than too little.

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Bill Stoudt Corona California.
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recommend an auto bilge pump for a 175 08 Feb 2010 05:36 #8

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Go with Rule bilge Pumps !!! . I have 3 on my boat . :arr

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