- Your online store for all types of marine engines and boat parts.
Monday - Friday
9:00 AM - 5:00 PM EST
Click for TOLL-FREE Number
Secure Online Payments
Special $9.95 Flat Rate Shipping
(800) 209-9624 | Home | Contact | Shipping | Returns | Cart View your shopping cart.
Search by Part Number
Enter engine/drive part number.
Original & matching parts for sale.
Manuals & Accessories
Shop by description, item number
or manufacturer's model number.
Why shop with us? Check our reviews! Why Us & Reviews   Boat Repair Forum Boat Repair Forum   Boat Video Gallery Video Gallery
Results 1 to 4 of 4
  1. #1
    Join Date
    Aug 2009
    Monroe, Michigan, USA

    Default Through hull water intake

    "Hello. I would like some advice on just what is the best way to put in a thru hull water intake. I know I will use a strainer as well, but what brand is the least likely to give me problems? I have to pull my 18' Bayliner capri tomorrow and I will winterize my AQ 125 A, but the local weed problem has almost cost me a motor and I want to relieve that issue. I see many brands on ebay, but this is not the time to get cheap, nor foolish. Thanks guys."

  2. #2
    Join Date
    Jun 2008
    Island Heights, NJ,

    Default "Go to: Inside... [url=""]

    "Go to:
    Inside... JPG

    The red valve handle is a hose bib which allows me to winterize/flush the engine by putting a short hose into a 5 galpail with w water hose running in it.


    The white block is STARBOARD that has been bedded to the hull. Its not obvious in the picture, but the "scoop" is "toed in" and not pointing straight forward. Water flow at that point on the hull is back and outwards from the keel, not straight back."
    Capt Bob
    1969 23ft ChrisCraft Lancer
    Merc 5.7L 260HP/ Volvo 280
    1972 22ft Bristol
    Honda 7.5HP 4 stroke Long shaft

  3. #3
    Join Date
    Mar 2009
    Portland, Oregon,

    Default "Are you convinced that thru h

    "Are you convinced that thru hull pick up will solve this problem?
    While the square area of the thru hull grate may be close to the same.... maybe even slightly larger......., the suction/intake volume do remain much the same.

    Robert, would there be any advantage to installing two "in parallel" thru hull pick-ups, thus reducing suction at each?
    Rick ... aka Ricardo..... AQ series Volvo Penta repair
    Portland, Oregon
    28' SDN F/B w/ twin Volvo Penta 5.7L DP's

    Please... no PMs!
    I would prefer email .... jenery (at)

  4. #4
    Join Date
    Jun 2008
    Island Heights, NJ,

    Default "I subscribe to the fewer the

    "I subscribe to the fewer the thru hull holes the better philosophy. One should make sure that the hose is rated for suction side service, i.e. wire reinforced and is the same size (I/D) as the inlet port on the raw water pump. In my case, the line is 1 1/4" and everything from the pump to the thru hull is 1-1/4". What is not obvious in the photos is that the thru hull fitting is of this type

    And that the "scoop/strainer" is a bolt on, not part of the thru hull. If I had to do it over again, I'd get one where the strainer section could be removed for cleaning as every once in a great while, some wiley crustatian decides to take up residence inside the thruhull itself.

    Note: I'm not recommending Defender as I've never used them...but I've never heard a bad thing about them either..."
    Capt Bob
    1969 23ft ChrisCraft Lancer
    Merc 5.7L 260HP/ Volvo 280
    1972 22ft Bristol
    Honda 7.5HP 4 stroke Long shaft

Similar Threads

  1. Restricted Intake Thru-Hull Strainer
    By HarryCarry in forum Crusader Marine Engine Forum
    Replies: 11
    Last Post: 08-31-2010, 10:08 PM
  2. Hull cleaning and water stains
    By markchiz in forum Mercruiser Sterndrive Forum
    Replies: 8
    Last Post: 11-14-2009, 05:52 PM
  3. Water Intake
    By tcmers in forum Volvo Penta Gas Archive
    Replies: 4
    Last Post: 11-01-2007, 06:09 PM
  4. Lower unit water intake erosion under water pump plate
    By marky5 in forum Archive 2003-2009
    Replies: 1
    Last Post: 04-19-2004, 09:15 PM
  5. No water on one side of thru hull exhaust
    By dennis dabal in forum Archive 2002-2006
    Replies: 3
    Last Post: 07-10-2003, 07:12 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts