User Tag List

Thanks Thanks:  0
Likes Likes:  0
Results 1 to 5 of 5
  1. #1
    Join Date
    Jul 2014
    Location
    Gatineau Canada
    Posts
    18
    Thanks (Given)
    0
    Thanks (Received)
    0
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Indentify parts for Nitro Gear case

    I bought a rebuilt Johnson 70hp 1987 with Nitro gear case. Problems with shifter control setup and blew the clutchdog damaging forward and reverse gears.
    How can I identify accuratley the gearcase parts? I was told to look for the gear case parts of 1975 - 1976 Stinger (not Stinger2). I looked at evinrude.com and there is 4 motor models, 2 gearcases possible for the 4 motors
    GEARCASE FOR MODELS 70572B,70573B
    GEARCASE FOR MODELS 70572E,70573E
    Which one would be the Nitro gearcase?

  2. #2
    Join Date
    Jun 2007
    Location
    Singapore/Melbourne/Italy
    Posts
    9,097
    Thanks (Given)
    1008
    Thanks (Received)
    354
    Likes (Given)
    4297
    Likes (Received)
    1953
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    the one for 15" on a 70 is a nitro
    or look at sst60 then you cant go wrong http://www.seawaymarine.com/p/SST-Race-Parts-2040
    these guys also manufacturer the parts as many are NLA from BRP

  3. #3
    Join Date
    Aug 2008
    Location
    London,Canada
    Posts
    180
    Thanks (Given)
    6
    Thanks (Received)
    9
    Likes (Given)
    59
    Likes (Received)
    27
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by powerabout View Post
    the one for 15" on a 70 is a nitro
    or look at sst60 then you cant go wrong http://www.seawaymarine.com/p/SST-Race-Parts-2040
    these guys also manufacturer the parts as many are NLA from BRP
    As suggested you are best to deal with Seaway Marine for the parts they have everything you need, tough to find used stuff these days. The gears are not cheap especially with the strong USD relative to the Cdn $

  4. #4
    Join Date
    Jul 2014
    Location
    Gatineau Canada
    Posts
    18
    Thanks (Given)
    0
    Thanks (Received)
    0
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    No answer from Seaway marine after a few days, I'm starting to look elsewhere.

    I came across the following :
    "75 HP was built as a 15 inch shaft from 1975 through 1988 with a smaller gear housing and a 15-28 (1.87) gear ratio lower unit."
    Now looking at 75 hp I get the option on BRP site for 15in transom. The forward and reverse gears are just about all the same across the year range and match what is listed from your reference to http://www.seawaymarine.com/p/SST-Race-Parts-2040. Looks like the SST60 also use the same gear case.

    The major difference is the clutchdog. looks like Johnson kept changing the clutchdog even with same propshaft.


    Any suggestion on the best choice for clutchdog?

  5. #5
    Join Date
    Jun 2007
    Location
    Singapore/Melbourne/Italy
    Posts
    9,097
    Thanks (Given)
    1008
    Thanks (Received)
    354
    Likes (Given)
    4297
    Likes (Received)
    1953
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    The dog was strengthened

Similar Threads

  1. Replies: 0
    Last Post: 10-02-2014, 09:07 PM
  2. Nitro Gear case
    By lilwhirlwind in forum Misc. Parts and Accessories
    Replies: 0
    Last Post: 09-28-2014, 01:52 PM
  3. Is this a nitro gear case?
    By FrankKing in forum Technical Discussion
    Replies: 5
    Last Post: 10-31-2007, 12:02 PM

Tags for this Thread

Posting Permissions

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