Page 2 of 4 FirstFirst 1234 LastLast
Results 11 to 20 of 32

Thread: Tohatsu M40D Build 40 50

  1. #11
    Team Member
    Join Date
    Feb 2015
    Location
    Georgia
    Posts
    38
    Post Thanks / Like

    Default

    Name:  FullSizeRender.jpg
Views: 1904
Size:  116.7 KB

    Installed some socket caps on the exhaust cover

  2. #12
    Team Member
    Join Date
    Feb 2015
    Location
    Georgia
    Posts
    38
    Post Thanks / Like

    Default

    Name:  IMG_3448.JPG
Views: 1488
Size:  116.7 KBName:  IMG_3466.JPG
Views: 1513
Size:  155.2 KB

    Here's one of my yamaha 60 carbs with the chokes removed. They are a good bit larger in diameter than the stock 40 intake. I wanted to use 70 yamaha round bowls, but couldn't find any at a decent price.

    I've got to open up the intake to match the carbs. Waiting on a gasket so I can scribe a line.

    Does anyone know what the size difference is between the yamaha 60's and 70s?

  3. #13
    Team Member Roflhat's Avatar
    Join Date
    Jul 2011
    Location
    Scotland
    Posts
    166
    Post Thanks / Like

    Default

    I think they're the same diameter, just different jetting. The jets in the 60 carbs might even suit you better
    Thanks camohunter thanked for this post

  4. #14
    Team Member
    Join Date
    Feb 2015
    Location
    Georgia
    Posts
    38
    Post Thanks / Like

    Default

    Quote Originally Posted by Roflhat View Post
    I think they're the same diameter, just different jetting. The jets in the 60 carbs might even suit you better
    I think you are right. From my research I found that the Yamaha 60 and 70 intake manifold and gasket is the same part number. That would seem to indicate that the carburetor throats are the same diameter. 70 carbs come with 145 mains. 60 carbs come with 140 main jets

  5. #15
    Xpress2830 Xpress2830's Avatar
    Join Date
    Jun 2010
    Location
    Sulphur Louisiana
    Posts
    36
    Post Thanks / Like

    Default OMC 50 Twin mods

    Hi mr Jerry. Bobby here from Louisiana. Looking for some educated advice for a 95 OMC 50 Twin. Thanks.

  6. #16
    Team Member
    Join Date
    Sep 2017
    Posts
    1
    Post Thanks / Like

    Default Port work

    Did you do your own port work if so how much did take out

  7. #17
    Team Member
    Join Date
    Feb 2015
    Location
    Georgia
    Posts
    38
    Post Thanks / Like

    Default

    Quote Originally Posted by Mchandler View Post
    Did you do your own port work if so how much did take out
    I did not do the port work. Pete Nydahl in Wisconsin did most of the work on the block. I highly recommend his work. The ports were widened a good bit.

  8. #18
    Team Member
    Join Date
    Feb 2015
    Location
    Georgia
    Posts
    38
    Post Thanks / Like

    Default Bored the intake to match carbs

    This was done with a rotary file and a die grinder. I sanded and polished the surfaces after these were taken.

    Name:  IMG_3931.jpg
Views: 1299
Size:  253.0 KB

    Name:  IMG_3933.jpg
Views: 1284
Size:  146.0 KB

  9. #19
    Team Member
    Join Date
    Jun 2005
    Location
    Eastern PA
    Posts
    661
    Post Thanks / Like

    Default

    Kinda hit the carb bore a bit with the old grinder, eh? Too bad, but it shouldn't bother a thing.

    Jeff
    "We live at the bottom of an ocean of air." - General Marvage Slatington

  10. #20
    Team Member
    Join Date
    Feb 2015
    Location
    Georgia
    Posts
    38
    Post Thanks / Like

    Default

    Got my reeds in today. Boyesen Power Reeds. They don’t look like what I expected. They were my second choice after Chris Carson reeds. Chris would never return my call or text after the first time I spoke with him. A friend of mine tried to buy some after me and Chris wasted his time also . I guess Chris Carson has better things to do than sell people stuff. Name:  569A75FB-FBC3-4184-8C12-2C0A6FAD6D58.jpg
Views: 1185
Size:  175.4 KB

Thread Information

Users Browsing this Thread

There are currently 2 users browsing this thread. (0 members and 2 guests)

Similar Threads

  1. Anyone experienced with m40d carbs in Yamaha 25
    By yammerhead in forum Technical Discussion
    Replies: 8
    Last Post: 08-05-2019, 01:49 PM

Bookmarks

Posting Permissions

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