Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Follow us on Facebook Follow us on Twitter
Page 1 of 3 123 LastLast
Results 1 to 10 of 25
  1. #1
    Registered
    My Boats:
    1979 Formula 233 Interceptor w/ twin 300hp 5.7l's
    Join Date
    Aug 2010
    Location
    Tacoma, WA
    Posts
    137

    Help with finding Sea water pump Part #

    I'm trying to find a impeller kit for my sea water pump and all I'm finding is kits for the alpha drive. Do they use the same kits? I went to west marine and they were much help. The Merc manual did help much either because I couldn't tell exactly which kit I needed. Any part numbers for Merc or Sierra would be helpful.

    The engines are 1985-1986 Mercruiser 300 Tempest 5.7L w/ Alpha 1 drives.

  2. #2
    Looking for a cruiser VIP Member axapowell's Avatar
    My Boats:
    Boatless!
    Join Date
    Nov 2001
    Location
    Alexandria Bay, NY 1000 Islands
    Posts
    2,428
    If my memory serves me right, isn't the impeller on the vertical shaft on the drive? You don't have a seawater pump on the motor do you?

    Dave
    The best day of a boat owners life is the day they buy and the day they sell...Not true!

  3. #3
    Looking for a cruiser VIP Member axapowell's Avatar
    My Boats:
    Boatless!
    Join Date
    Nov 2001
    Location
    Alexandria Bay, NY 1000 Islands
    Posts
    2,428
    If so, part number 46-96148 (A8, B8, Q8, or T8) for the last two. Any of those should work if the pump is on the lower, which it should be.

    Dave
    The best day of a boat owners life is the day they buy and the day they sell...Not true!

  4. #4
    Registered
    My Boats:
    1979 Formula 233 Interceptor w/ twin 300hp 5.7l's
    Join Date
    Aug 2010
    Location
    Tacoma, WA
    Posts
    137
    Yes there is a sea water pump that is belt driven. It is down low and connects directly from my thru hull fittings, to the sea strainers, then to the cooling tube on top of the engine.

  5. #5
    Looking for a cruiser VIP Member axapowell's Avatar
    My Boats:
    Boatless!
    Join Date
    Nov 2001
    Location
    Alexandria Bay, NY 1000 Islands
    Posts
    2,428
    Ok, different set up for an Alpha. Is your fuel pump intrigrated on the same housing? A picture would help.

    Dave
    The best day of a boat owners life is the day they buy and the day they sell...Not true!

  6. #6
    Registered
    My Boats:
    1979 Formula 233 Interceptor w/ twin 300hp 5.7l's
    Join Date
    Aug 2010
    Location
    Tacoma, WA
    Posts
    137
    Sea pump is below fuel pump which is located on the block. I'll what I can do to get a picture up. West marine sold me a sierra kit with number # 18-3217D on the package it states that it replaces part # Merc 46-96148a5.

  7. #7
    Looking for a cruiser VIP Member axapowell's Avatar
    My Boats:
    Boatless!
    Join Date
    Nov 2001
    Location
    Alexandria Bay, NY 1000 Islands
    Posts
    2,428
    The part they sold you is for the lower unit on your drive. Maybe you are running 2 pumps? I am not familiar with this set up.

    I think you should post this over on the general tech question section. I don't think I am helping much.

    Sorry,
    Dave
    The best day of a boat owners life is the day they buy and the day they sell...Not true!

  8. #8
    Registered
    My Boats:
    1989 Formula 272 SR-1 1979 Formula 255 Liberator...My 4th Formula
    Join Date
    Jan 2011
    Location
    West Palm Beach, Fl
    Posts
    2,661
    Quote Originally Posted by bigmike253 View Post
    Yes there is a sea water pump that is belt driven. It is down low and connects directly from my thru hull fittings, to the sea strainers, then to the cooling tube on top of the engine.
    Wow...sounds like a Bravo set up. I've never seen that set up for an Alpha.

  9. #9
    Registered
    My Boats:
    1989 Formula F-311-SR1
    Join Date
    Aug 2002
    Location
    Eastern Lake Ontario
    Posts
    2,896
    Found an exploded view in the link below. Appears to be identical to the pully-driven Bravo setup.

    http://www.marinepartsplus.com/catal...14#612268_jump

  10. #10
    Looking for a cruiser VIP Member axapowell's Avatar
    My Boats:
    Boatless!
    Join Date
    Nov 2001
    Location
    Alexandria Bay, NY 1000 Islands
    Posts
    2,428
    Atta boy bird. Good find! I'm sure that is the right one. What about the internal pump? Do you still need that one too?

    Dave
    The best day of a boat owners life is the day they buy and the day they sell...Not true!


Page 1 of 3 123 LastLast

Posting Permissions

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


OSO Directory
All times are GMT -5. The time now is 02:11 AM.
Powered by vBulletin® Version 4.2.0
Copyright © 2014 vBulletin Solutions, Inc. All rights reserved.
Search Engine Optimization by vBSEO 3.6.1
Original Poster In Postbit provided by Original Poster In Postbit v1.0.0 (Free) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
Copyright 2011 OffShoreOnly. All rights reserved.