Question About Bravo 3 Impeller Kits

TonyG13TonyG13 ✭✭✭✭
in Engine Discussions
First time buying a replacement kit for our Mercruiser 350 Bravo 3 impeller. Used to have the yard do it, but now will attempt it myself to learn and save money.

Received the kit today (Sierra 18-3150) and looking at the housing where the impeller goes it is not a perfect circle. It is every so slightly oblong, measuring 2" X 2-1/4".

Is this normal and by design?


· Share on Facebook

Comments

  • YYZRCYYZRC ✭✭✭✭✭
    Yes that is normal.
    2006 390 EC
    2008 350 EC
    Georgian Bay
    · Share on Facebook
  • TonyG13TonyG13 ✭✭✭✭
    Thank you!! Was freaky out for a moment thinking it was a machine molding error - but the plate holes lining up made me think it might not be.
    · Share on Facebook
  • Dream_InnDream_Inn mod
    That abnormality is what allows the pump (impeller) to work correctly.  Where the vanes are compressed is where it pulls in the water.  A trick to getting the impeller installed is to use a good wire tie to pull the impeller vanes together to allow easier installation.

    Dream 'Inn III -- 2008 400 Express

    · Share on Facebook
  • Cableguy GregCableguy Greg ✭✭✭✭✭
    Also use some dish soap along with the zip tie to get it installed. 
    2008 280 Express Cruiser, 6.2MPI, B3, Pittsburgh, PA "Blue Ayes" (Sold)
    2022 Cherokee 294GEBG Black Label land yacht. 
    Go Steelers!!!
    · Share on Facebook
  • rasburyrasbury ✭✭✭✭✭
    Tony- is it over heating or just maintenance? The flat surfaces will get groved as you may already know about- would hate to see you pulling it back off if so...
    · Share on Facebook
  • TonyG13TonyG13 ✭✭✭✭
    @rasbury - Just buying for preventative maintenance and/or have it in case of emergency.
    · Share on Facebook
  • rasburyrasbury ✭✭✭✭✭
    Ah.....I unfortunately became an expert on my pump!
    · Share on Facebook
Sign In or Register to comment.