Results 1 to 9 of 9
  1. #1
    Member
    Join Date
    Feb 2006
    Location
    Tazewell Tn.
    Posts
    2,617

    How to tell what lower unit I have.

    I have 1995 mercury promax efi, OG205338, pretty sure it's a 20" mid and the gear case has had a nose cone put on it. I have heard of only 3 merc lower unit's, a sportmaster, torquemaster and maybe a cle. So how do I tell what I got? I know it's not a sportmaster so it's on of the other two.
    Last edited by big_o_tom; 06-28-2020 at 05:18 PM.

  2. Member
    Join Date
    Jun 2013
    Location
    LONGVIEW TEXAS
    Posts
    14,040
    #2
    cle is black with cresent leading low water pickups under nose like sportmaster , yours painted or not, got torque tab built in skeg ?????
    .................................................. ...the scariest thing in life is the unknown ...................................

  3. Member
    Join Date
    Feb 2006
    Location
    Tazewell Tn.
    Posts
    2,617
    #3
    Mine has a nose cone added, its primer grey, has a torque tab made it the skeg and 1.8 or 1.9 to 1 gear ratio.
    I asked a friend last night and he told me I had a torque master. He said the cle was the first version of the sport master.

  4. Member
    Join Date
    Jun 2013
    Location
    LONGVIEW TEXAS
    Posts
    14,040
    #4
    likely 1;87 ratio , correct cle were early HP cases
    .................................................. ...the scariest thing in life is the unknown ...................................

  5. Member silverbullet02's Avatar
    Join Date
    Jun 2009
    Location
    Knoxville, TN
    Posts
    839
    #5
    Got a picture?
    1995 Allison XB-2003 225 Super Mag. It's slow and I'm ok with that.

  6. Member
    Join Date
    Feb 2006
    Location
    Tazewell Tn.
    Posts
    2,617
    #6
    I just stopped by the Norris Craft plant and Richard said that I had a standard case, 1.87 ratio. He couldn't think of the guys name that did the low water nose cone but he said it wasn't a Bob's machine job.

  7. Member silverbullet02's Avatar
    Join Date
    Jun 2009
    Location
    Knoxville, TN
    Posts
    839
    #7
    Titus or JC maybe?
    1995 Allison XB-2003 225 Super Mag. It's slow and I'm ok with that.

  8. Member
    Join Date
    Feb 2006
    Location
    Tazewell Tn.
    Posts
    2,617
    #8
    Oh yeah about a pic... to complicated for me to post on the bbc. I'd be more than glad to text you a pic of it.

  9. Member
    Join Date
    Jun 2013
    Location
    LONGVIEW TEXAS
    Posts
    14,040
    #9
    Quote Originally Posted by big_o_tom View Post
    I just stopped by the Norris Craft plant and Richard said that I had a standard case, 1.87 ratio. He couldn't think of the guys name that did the low water nose cone but he said it wasn't a Bob's machine job.
    shouldn't have been done to standard gearcase in first place internals not designed to run that high ,high load aplication
    .................................................. ...the scariest thing in life is the unknown ...................................