How To Install a Pumper Carb on Your TW - Page 2
Close
    
    
Page 2 of 3 FirstFirst 123 LastLast
Results 11 to 20 of 23
Like Tree134Likes

Thread: How To Install a Pumper Carb on Your TW

  1. #11
    Senior Member Toecutter's Avatar
    Join Date
    Sep 2016
    Location
    North Idaho
    Posts
    283
    Thanks so much for taking the time to do this and also write it up with pics. Awesome work!

  2. #12
    Senior Member Cornelis's Avatar
    Join Date
    Mar 2015
    Location
    Centurion, South Africa
    Posts
    589
    I went for the first proper 100 mile shake-down run today and there was no hiccups at all.

    The carb excels with acceleration and bottom end grunt and then there is also that wonderful crisp throttle response . .

    At the top end it behaves very much the same as the stock carb, although it feels like I can maintain my cruising speed better going uphill.

    At the moment my guess is that the fuel consumption is the same as the stock carb also

    This looks like it might be too good to be true but this is my honest ride report, one of the ways that I experience the difference is when I return home from work every day -

    I live on top of a small hill, in the past I always had to go around the last corner, gear down to 2nd gear and twist the throttle to maintain momentum going up the last 100 yards.
    Not anymore, now I simply stay in 3rd gear and slightly open the throttle to get to my destination . .
    1990 Yamaha TW200Hidden Content _____________ Come to Me, all you who are weary and burdened, and I will give you rest. - Matthew 11:28
    Hidden Content

  3. #13
    Senior Member Fred's Avatar
    Join Date
    Dec 2011
    Location
    Turtle Wrangling the Sierras
    Posts
    18,129
    Great report on your success.
    Imagine the extra petrol purchased will be a bargain compared to the extra whoopee generated as you inject that extra petrol in one squirt at a time. Would imagine top speed should remain limited by un-modified engine’s inability to ingest and pump out much more air irregardless of fuel added. From an abstract viewpoint all internal combustion engines are essentially air pumps.
    What’s next, bigger valves?
    2003 TW200 "Betty Boop"
    2006 TW200 "Nibbler", a.k.a. “Mr.Gizmo"
    Hidden Content All Things Considered I’ld Rather Be Motorcycling

  4. Remove Advertisements
    TW200Forum.com
    Advertisements
     

  5. #14
    Senior Member Cornelis's Avatar
    Join Date
    Mar 2015
    Location
    Centurion, South Africa
    Posts
    589
    Bro, I'm burning half a pint of oil per month at the moment so if I get the time I'm going to have to replace the rings hopefully before the end of the year, maybe a 70 mm piston, carefully polish, hone and grind the needed things inside the engine but nothing beyond that for now, the gearbox is still in a good condition though.

    I'll keep you guys updated with the progress
    1990 Yamaha TW200Hidden Content _____________ Come to Me, all you who are weary and burdened, and I will give you rest. - Matthew 11:28
    Hidden Content

  6. #15
    Ken
    Ken is offline
    Senior Member Ken's Avatar
    Join Date
    Aug 2016
    Location
    Houston, Texas
    Posts
    1,752
    Thanks for the update. It sounds like a great upgrade.
    It ought to wheelie better now.

  7. #16
    Senior Member scotti158's Avatar
    Join Date
    May 2013
    Location
    Groton, NY
    Posts
    2,663
    Quote Originally Posted by Ken View Post
    Thanks for the update. It sounds like a great upgrade.
    It ought to wheelie better now.
    Does pretty good with the stocker!
    Untitled-1.jpg
    2013 Yamaha TW200

    1996 Yamaha TW200

    1995 Kawasaki KLR650

    2002 Yamaha RoadStar 1600 with sidecar

  8. #17
    Ken
    Ken is offline
    Senior Member Ken's Avatar
    Join Date
    Aug 2016
    Location
    Houston, Texas
    Posts
    1,752
    Quote Originally Posted by scotti158 View Post
    Does pretty good with the stocker!
    Untitled-1.jpg
    Have you used your wheelie techniques to practice enduro riding. Up and over the logs, rocks etc.

  9. #18
    Senior Member scotti158's Avatar
    Join Date
    May 2013
    Location
    Groton, NY
    Posts
    2,663
    Quote Originally Posted by Ken View Post
    Have you used your wheelie techniques to practice enduro riding. Up and over the logs, rocks etc.
    Mostly just to impress the grandkids or amaze the elderly neighbors.
    2013 Yamaha TW200

    1996 Yamaha TW200

    1995 Kawasaki KLR650

    2002 Yamaha RoadStar 1600 with sidecar

  10. #19
    Senior Member elime's Avatar
    Join Date
    Jul 2010
    Location
    San Jose, CA
    Posts
    6,897
    Quote Originally Posted by scotti158 View Post
    Mostly just to impress the grandkids or amaze the elderly neighbors.
    I am not a neighbor but I am elderly and impressed.

    My TW will reach for the sky but it feels like I am going over backwards so I chicken out.
    Long live the internal combustion engine!

  11. #20
    Senior Member Cornelis's Avatar
    Join Date
    Mar 2015
    Location
    Centurion, South Africa
    Posts
    589

    How to Fix the Choke

    It's been a week since I installed the carb and my bike is a sheer pleasure to ride, it is summer time over here and I don't even need the choke to start the bike in the mornings.

    I just had to do a small but important fix to the carb today, the carb comes with a bracket which I can use to install a choke cable to the carb but since the carb already has a choke lever it is much easier to just use the lever.

    All I had to do is to remove the bracket



    and then I had to attach this metal plate in place of the bracket



    this is the choke position when it is not in use



    this is the choke position when it is halfway open

    1990 Yamaha TW200Hidden Content _____________ Come to Me, all you who are weary and burdened, and I will give you rest. - Matthew 11:28
    Hidden Content

Page 2 of 3 FirstFirst 123 LastLast

Sponosred Links

Posting Permissions

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

Similar Threads

  1. New Pumper Carburetor for T-Dub
    By Cornelis in forum Performance and Customization
    Replies: 21
    Last Post: 09-30-2017, 09:56 AM
  2. Carb tuning, Dr350 Tm33 pumper
    By rivershot in forum Other Bikes
    Replies: 7
    Last Post: 03-26-2017, 07:34 AM
  3. Replies: 5
    Last Post: 07-11-2016, 05:41 PM
  4. Carb install help on a 1989
    By a1parrothead in forum Technical Help
    Replies: 7
    Last Post: 05-15-2016, 10:39 PM
  5. Searching for a Mikuni TM28-1 pumper carb overseas
    By PalmStateCrawler in forum Performance and Customization
    Replies: 19
    Last Post: 06-24-2013, 03:19 PM

Search tags for this page

news

Click on a term to search for related topics.

Tags for this Thread