Logo
Results 1 to 6 of 6
  1. #1
    Join Date
    Apr 2018
    Location
    Tottenham, Ontario, & boating
    Posts
    78

    Default Is there room for more top speed?

    Hello

    I think I will ask someone experienced on this one. I have a 2000 capri 1950, 3.0 merc I/O, the fastest I ever got it to go was 30mph. to me that seems stupidly low. boat weight is 2075 lbs.

    Thanks

  2. #2
    Join Date
    Sep 2010
    Posts
    17,509

    Default Re: Is there room for more top speed?

    Is your engine producing it's rated power , yes or no ?------Have motor tested on a dynamometer.-----Is boat waterlogged ?----It takes a lot of power to move a boat.----What speed do you think it should go ?

  3. #3
    Join Date
    Apr 2018
    Location
    Tottenham, Ontario, & boating
    Posts
    78

    Default Re: Is there room for more top speed?

    I think the motor is making the right power. If I dont watch out it will readily pass 4400 rpm and go past 5k (never done this tho luckily). it gains about 10 mph in the 4000 - 4400 rpm range. I feel like the prop is too small. I will check what it has right now.

  4. #4
    Join Date
    Dec 2006
    Location
    Chaumont Bay, N.y., USA
    Posts
    5,842

    Default Re: Is there room for more top speed?

    Ayuh,..... Prop it to run 4600/ 4800 rpms at wot, neatly trimmed,......

    That's the fastest it's capable of, with the horsepower available,.....
    Any Grease is Better,... Than No grease at All....

  5. #5
    Join Date
    Apr 2018
    Location
    Tottenham, Ontario, & boating
    Posts
    78

    Default Re: Is there room for more top speed?

    should I go up in diameter or up in pitch? I often carry heavy loads

  6. #6
    Join Date
    Dec 2006
    Location
    Chaumont Bay, N.y., USA
    Posts
    5,842

    Default Re: Is there room for more top speed?

    Ayuh,..... Pitch,...... Diameter will take care of itself,.....
    Any Grease is Better,... Than No grease at All....

Similar Threads

  1. Engine Room and Venting
    By knuckle47 in forum Crusader Marine Engine Forum
    Replies: 16
    Last Post: 11-17-2016, 09:03 AM
  2. Engine Room insulation
    By Peter Cameron in forum Ford Lehman
    Replies: 0
    Last Post: 12-01-2013, 08:52 PM
  3. valve cover gasket - '88 454.... enough room w/o removing anything?
    By bobct in forum Crusader Marine Engine Forum
    Replies: 5
    Last Post: 12-16-2011, 02:27 PM
  4. Live Chrysler chat room Thursday nights 911 eastern
    By hurrikain in forum Chrysler Force Outboard Archive
    Replies: 0
    Last Post: 08-28-2008, 10:28 AM
  5. Engine Room Extinguisher
    By richie in forum Miscellaneous marine engine topics
    Replies: 9
    Last Post: 04-13-2008, 12:27 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
  •