Jetting for Sea Level .... !!!!!
Close
    
    
Page 1 of 2 12 LastLast
Results 1 to 10 of 13
Like Tree2Likes

Thread: Jetting for Sea Level .... !!!!!

  1. #1
    Member Alexander's Avatar
    Join Date
    Aug 2013
    Location
    Washington State
    Posts
    70

    Jetting for Sea Level .... !!!!!

    Hey guys,

    I have I new TW ( love it ) . I know that everyone suggests re-jetting to 130 main which I will do. But I am also wondering if it would be a good idea to change the pilot jet since I ride at sea level.

    If anyone has re-jetted at sea level, any tips/pointers would be greatly appreciated
    Last edited by Alexander; 08-22-2013 at 12:15 AM.

  2. #2
    Member Alexander's Avatar
    Join Date
    Aug 2013
    Location
    Washington State
    Posts
    70

    Question

    Where can I find a 130 main jet for the newer OEM mikuni carb. (2013 TW)

    I would like to get the 130 b4 I continue any more of the break in process.

  3. #3
    Senior Member GaryL's Avatar
    Join Date
    Jun 2013
    Location
    Forestburgh, NY
    Posts
    7,991
    My first choice for these parts will always be pure OEM from a dealer. As far as jetting for sea level I think there should be no difference from sea level right up to 3,000 feet above. Where I live is 1250 above and I can go in either direction to sea level or 3,000 above with no issue on jetting.
    I will add one thing you have surely heard before, if it ain't broke don't fix it. While the bike is in warranty and break in if it is not properly adjusted for your geographic area then take it to the dealer and make him get it right.

    GaryL
    Be Decisive! Right or Wrong just make a decision. ​ The road of life is paved with flat squirrels that couldn't make a decision.

    Since light travels faster than sound, some people appear bright until you hear them speak.
    If I agreed with you, we'd both be wrong.

    1987 Yamaha BW350 Big Wheel
    2017 Snowdog Track sled tow motor for ice fishing
    Kubota BX2370 Subcompact tractor with snow blower
    Wilderness System Ride 115 fishing Kayaks

  4. Remove Advertisements
    TW200Forum.com
    Advertisements
     

  5. #4
    Senior Member peter's Avatar
    Join Date
    Jul 2011
    Location
    Providenciales, Turks & Caicos
    Posts
    398
    Just my experience. I have a 2010 which I bought new over 2 years ago. Now have over 16,000 miles on sea level on it. Still haven't even touched the carb yet, meaning still have factory settings and have no issues. Same with my 2009, bought this Feb. also with factory settings and also no issues.
    jbfla likes this.

  6. #5
    Senior Member jbfla's Avatar
    Join Date
    Jul 2010
    Location
    FL. GA, NC
    Posts
    2,389
    Quote Originally Posted by GaryL View Post
    I will add one thing you have surely heard before, if it ain't broke don't fix it.

    GaryL
    Good advice.

    If the bike starts easily and runs good at all speeds, don't be so eager to make changes.

    Maybe adjust the pilot screw, nothing more.

    jb
    2018 Triumph Street Twin..............2016 CB500F
    2014 XT250 ..................................2008 H-D Softail Deluxe
    2008 SV 650..................................2007 DR 650..

  7. #6
    Senior Member GaryL's Avatar
    Join Date
    Jun 2013
    Location
    Forestburgh, NY
    Posts
    7,991
    Quote Originally Posted by jbfla View Post
    Good advice.

    If the bike starts easily and runs good at all speeds, don't be so eager to make changes.

    Maybe adjust the pilot screw, nothing more.

    jb
    Thanks jbfla. As you know and have been helping me through it, I am up to my ears in my own carb and quite deep into my check book trying to resolve my bikes issues. At this point I am quite sure my carb has some after market BS rebuild kit in it and no matter how clean I get it there is something that just does not gel at constant speeds right around 45-50. I have a big order in at Stadium Yamaha and am awaiting all the OEM individual parts. If after they arrive and the carb is back to pure stock it still does not perform correctly I also bought a brand new carb as back up. I rarely try to fix what is not broke but I am a complete lunatic about getting this bike to run as it should. I would go so far as to swap a known well tuned carb from a friends bike just to be sure mine will run right with it. I am pretty sure my problem is in the carb but well aware there could be some other electrical issue and all my efforts will be misguided. If my bike would run right I would out riding it instead of messing with it.

    Another thing we have to be reminded of all the time is that just because one members bike runs great with particular jets and setting combinations does not mean you can copy it and get the same results. Carbs can be a finicky beast and all the stars and parts have to line up just right to achieve the best results. I ran a big dealership MC/ATV shop and there were a few carbs the mechanic worked on extensively and in the end he gave up and installed a new one because nothing he did fixed the problem and it certainly did not make for a satisfied customer until the machine did run right.

    GaryL
    Be Decisive! Right or Wrong just make a decision. ​ The road of life is paved with flat squirrels that couldn't make a decision.

    Since light travels faster than sound, some people appear bright until you hear them speak.
    If I agreed with you, we'd both be wrong.

    1987 Yamaha BW350 Big Wheel
    2017 Snowdog Track sled tow motor for ice fishing
    Kubota BX2370 Subcompact tractor with snow blower
    Wilderness System Ride 115 fishing Kayaks

  8. #7
    Member Alexander's Avatar
    Join Date
    Aug 2013
    Location
    Washington State
    Posts
    70
    I have heard many ppl say that the TW runs much better with a bit more fuel. Just seems that if a bike at altitude runs better with more fuel, than one at sea level would benefit even more from a larger main jet. I have read a good number of posts concerning jetting, and every person that has commented on re-jetting with a larger main has had nothing but positive outcomes.

    However I don't want to mess my carb up if they are so finicky that installing a new main jet will cause the bike to run poorly.
    Even after I warm it up for a few mins it seems to sputter when I try to throttle up from idle in neutral, it gets past the sputtering after a few more minutes. But still the throttle does not seem to be as responsive as I think it should be. My friend has an older yamaha xs650 twin with 2 carbs and it starts up first kick when cold, and after 30 seconds he can blip the throttle and it revs right up.

  9. #8
    Senior Member GaryL's Avatar
    Join Date
    Jun 2013
    Location
    Forestburgh, NY
    Posts
    7,991
    I too have read all those posts about larger jets being beneficial and I do agree there could be something to it. I bought the 118 jet and when I cleaned the carb and installed the new jet I found many non OEM parts in the carb. This is what I believe is causing my problems. Your carb may very well be just fine and run better with different jetting. You never mentioned any performance issue and instead said you have a brand new TW that I have to assume is under the warranty. Your dealer has an obligation to get a new machine running the way it should no matter where you live. I would have my bike back to the shop, explain the problem and let the mechanic test drive to feel the issue and then have them repair it. I would not take a chance of voiding my warranty by messing with a delicate carb or do any adjustments.
    Consider this, you change the jets, you change the pilot setting and you blow your motor up. Any dealer will immediately refuse the repairs. I am on my own with my 22 year old bike and carb but you have a warranty and I highly suggest that you use it unless for some reason your warranty has expired.

    GaryL
    Be Decisive! Right or Wrong just make a decision. ​ The road of life is paved with flat squirrels that couldn't make a decision.

    Since light travels faster than sound, some people appear bright until you hear them speak.
    If I agreed with you, we'd both be wrong.

    1987 Yamaha BW350 Big Wheel
    2017 Snowdog Track sled tow motor for ice fishing
    Kubota BX2370 Subcompact tractor with snow blower
    Wilderness System Ride 115 fishing Kayaks

  10. #9
    Senior Member jbfla's Avatar
    Join Date
    Jul 2010
    Location
    FL. GA, NC
    Posts
    2,389
    You didn't mention the sputtering.

    Yes, your carb is most certainly set lean on a new bike.

    And turning out the pilot screw and putting in a slightly larger main jet (128 or 130) should help.

    As GaryL said, give the dealer a chance to remedy the problem.

    If you bring it to the dealer with the metal plug removed from pilot screw, and the bowl screws stripped, they will be reluctant to help without charging you.

    jb
    Last edited by jbfla; 08-23-2013 at 10:01 AM.
    2018 Triumph Street Twin..............2016 CB500F
    2014 XT250 ..................................2008 H-D Softail Deluxe
    2008 SV 650..................................2007 DR 650..

  11. #10
    Senior Member TW-Brian's Avatar
    Join Date
    Dec 2010
    Location
    Pleasanton, CA
    Posts
    5,670
    New bikes are setup to run extremely lean in order to comply with federal/state emissions standards. I would be surprised if a dealer would adjust your carb to anything other than the original factory settings.

Page 1 of 2 12 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. Headlight fluid level ?
    By Joboo in forum Technical Help
    Replies: 16
    Last Post: 06-24-2013, 05:21 PM
  2. Oil level glass
    By osheen23 in forum General Discussion
    Replies: 11
    Last Post: 11-21-2012, 11:39 AM
  3. Fork oil level
    By elime in forum Technical Help
    Replies: 27
    Last Post: 11-13-2012, 09:58 AM
  4. carb jetting
    By niqhowie in forum Technical Help
    Replies: 6
    Last Post: 10-23-2012, 04:57 PM
  5. Jetting for 10k feet
    By -Jake- in forum Performance and Customization
    Replies: 7
    Last Post: 08-07-2012, 05:04 PM

Search tags for this page

2012 tw200 jetting

,

best jetting for tw 200

,

good jetting for sea level

,

s&s carb jetting sea level

,

s&s carb jetting sealevel to 3800 feet

,

whats the best jetting for a yamaha tw200 at about 3000 feet sea level

Click on a term to search for related topics.