Results 1 to 8 of 8
  1. Collapse Details
    merc engine identification
    #1
    phragle
    phragle is offline
    Charter Member phragle's Avatar
    Join Date
    Oct 2008
    Location
    Serious is the BOMB!
    Posts
    7,073
    10-31-2009 05:49 PM
    Trying to figure out what it is.. boats a 77/78 bertram, twin straight 6's, owner thinks they are 300 ci? they are the original motors with alpha's
    P-4077 "The Swamp" S.B.Y.C. and Michigan medboat mothership
    Reply With Quote
     
  2. Collapse Details
     
    #2
    MikeyFIN
    MikeyFIN is offline
    Competitor MikeyFIN's Avatar
    Join Date
    Dec 2008
    Location
    Turku, Finland
    Posts
    1,721
    10-31-2009 06:12 PM
    292 in-line GM sixes or 300 Fords yes.
    Offshore Racing wasn´t designed to be a spectator sport, it's for people or companies with's lots of money to push the envelope of endurance technology and hopefully put a trophy on a mantle. It's man vs the elements, not like boats with like engines running in circles.
    Reply With Quote
     
  3. Collapse Details
     
    #3
    TMS1155
    TMS1155 is offline
    Registered
    Join Date
    Nov 2008
    Location
    Bradenton Fl.
    Posts
    98
    11-01-2009 02:38 AM
    Quote Originally Posted by phragle View Post
    Trying to figure out what it is.. boats a 77/78 bertram, twin straight 6's, owner thinks they are 300 ci? they are the original motors with alpha's
    If they are165 HP they are250cu in. they are more likely the 200 HP which are292 cu in.
    The alphas are not original. originals were either #1 0r #2 drives. Alphas didnt come out until earley 80's (I think)
    Reply With Quote
     
  4. Collapse Details
     
    #4
    phragle
    phragle is offline
    Charter Member phragle's Avatar
    Join Date
    Oct 2008
    Location
    Serious is the BOMB!
    Posts
    7,073
    11-01-2009 12:23 PM
    prealpha....
    P-4077 "The Swamp" S.B.Y.C. and Michigan medboat mothership
    Reply With Quote
     
  5. Collapse Details
     
    #5
    Pismo10
    Pismo10 is offline
    Registered
    Join Date
    Oct 2009
    Posts
    40
    11-02-2009 05:23 PM
    It is a GM 165hp inline 6cyl 250ci with a Mercruiser R drive. Great motor, great drive will last for a long time...A newer MR or Alpha Gen 1 will bolt right on to the transom assem if they blow up.
    Reply With Quote
     
  6. Collapse Details
     
    #6
    Biggus
    Biggus is offline
    Sponsor Biggus's Avatar
    Join Date
    Oct 2008
    Location
    Naples, Maine
    Posts
    349
    11-02-2009 05:33 PM
    A friend has a pair of 165 Merc six cyl motors all rebuilt, the project was abandoned.

    I think he'll take $1900 for the pair.
    Reply With Quote
     
  7. Collapse Details
     
    #7
    MOBILEMERCMAN
    MOBILEMERCMAN is offline
    Founding Member / Competitor MOBILEMERCMAN's Avatar
    Join Date
    Oct 2008
    Location
    Lake Travis Texas
    Posts
    6,818
    11-02-2009 05:48 PM
    Quote Originally Posted by TMS1155 View Post
    Alphas didnt come out until earley 80's (I think)
    '86 was the first year for ALPHAs. I can't remember exactly but, I think the input spline shaft was an odd length and needed to be swapped if you update the drives. Very easy to do.

    Those 165 were popular and dependable. The worked great in twin engines because the could be mounted with close center to centers.. From the transom it almost looked like they were staggered.
    Jim
    Reply With Quote
     
  8. Collapse Details
     
    #8
    TMS1155
    TMS1155 is offline
    Registered
    Join Date
    Nov 2008
    Location
    Bradenton Fl.
    Posts
    98
    11-02-2009 09:10 PM
    Quote Originally Posted by MOBILEMERCMAN View Post
    '86 was the first year for ALPHAs. I can't remember exactly but, I think the input spline shaft was an odd length and needed to be swapped if you update the drives. Very easy to do.

    Those 165 were popular and dependable. The worked great in twin engines because the could be mounted with close center to centers.. From the transom it almost looked like they were staggered.
    Yes Jim, the 165 input shaft is about 3 inches shorter than the Alpha drive.
    Reply With Quote
     

Posting Permissions

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

Forum Rules