Do I need to rejet with new pipes?


Page 1 of 3 123 LastLast
Results 1 to 10 of 29

Thread: Do I need to rejet with new pipes?

  1. #1
    Join Date
    Jan 2011
    Location
    Beaufort
    Posts
    14

    Do I need to rejet with new pipes?

    Hi all Im new to the forums and to my VTX 1300r . I got a great deal on a "new" set of Bubs for my bike but do I need to rejet my carb or retune anything after I put them on? I have never changed pipes on a bike so this is new territory for me. Thanks in advance and ride safe!

  2. #2
    Join Date
    Sep 2008
    Location
    Utica
    Age
    51
    Posts
    5,305
    Welcome to the Cafe.

    No rejet is needed unless you change or modify the airbox for more airflow, it's not required but it'll run and start better if you turn the a/f mixture screw out a 1/4 to 1/2 turn.
    (Even bone stock the a/f could use some adjusting)

    Last edited by doug48317; 01-06-2011 at 10:17 PM.

  3. #3
    epiphysis's Avatar
    epiphysis is online now team VTX cafe physician

    Ohio Riders Group
    Join Date
    May 2006
    Location
    Ashtabula,Ohio
    Age
    61
    Posts
    13,248
    generally, rejetting is only needed if you change the air box......if you modify it, you will need to rejet......maybe! if you change the pipes, you wont need to change anything.....however, you might need to do the pair valve mod......that will stop the popping with decel........

    as for changing the pipes...it's very easy......all you will need is new crush gaskets.....otherwise, take off the old, put on the new!!

    I would do a search for the pair valve and crush gaskets......check the stickys at the beginning of the 1300 section

    good luck...feel free to ask for any help you might need..someone will chime in!!

  4. #4
    Join Date
    Jan 2011
    Location
    Beaufort
    Posts
    14
    Awsome thanks for the good news ill adjust the a/f screw and ill look into the cush gasket and pair valve , because I have no clue what a pair valve is.

  5. #5
    Join Date
    Sep 2008
    Location
    Utica
    Age
    51
    Posts
    5,305
    Quote Originally Posted by BigDom View Post
    Awsome thanks for the good news ill adjust the a/f screw and ill look into the cush gasket and pair valve , because I have no clue what a pair valve is.
    It's just some pollution crap their required to put on it, once you change the pipes you'll hear the popping inside the pipes that goes on during decel. It does it all the time but with stock pipes you can't hear it.

    you ask and... http://myvtx1300.com/

  6. #6
    Charlie D's Avatar
    Charlie D is offline Senior Member
    Washington State Riders Group
    Oregon Riders Group
    Join Date
    Aug 2006
    Location
    seatac, Washington
    Age
    57
    Posts
    18,401
    Make sure to close the A/F screw all the way till lightly seated then open it back up between 2 and 2 1/2 turns you may need to fine tune a little later on.

  7. #7
    Join Date
    Jan 2011
    Location
    San Diego
    Posts
    22
    Quote Originally Posted by doug48317 View Post
    ...you'll hear the popping inside the pipes that goes on during decel.
    Cool, I was wondering if anything could be done to reduce those 'pops'. I have Cobra pipes and it really is noticable. I don't really like to hear it but, maybe it is cool in some ways. Anyway I am in CA and would be nervous about change Smog related equipment.

  8. #8
    Gonzo1970's Avatar
    Gonzo1970 is offline Equito Passim
    Missouri Riders Group
    Illinois Riders Group

    Join Date
    Sep 2009
    Location
    Belleville, IL
    Age
    44
    Posts
    9,101
    PAIR Valve Removal takes care of the popping. Plates for doing this are $15 or so. Pretty easy to do. If you can change the oil in a car, you can do this.

    As far as the re-jet, as others have stated, it is not necessary.

    The issue here is Aftermarket Pipes make the engine run a little leaner.

    Leaner = Hotter

    On Air Cooled Engines (Read: HD) this is NOT a Good Thing, so the re-jetting is necessary to richen the engine up so it doesnt run Hotter than it should.

    On LIQUID Cooled Bikes (Read: Us!) this is Not necessary because our engine temperatures remain constant, regardless of any Lean condition.

    -Gonz

  9. #9
    Bassdude404's Avatar
    Bassdude404 is offline The guitar, not the fish!
    Ohio Riders Group
    Michigan Riders Group
    Indiana Riders Group
    Illinois Riders Group
    Join Date
    Sep 2007
    Location
    Rolling Prairie, Indiana
    Age
    50
    Posts
    32,045
    What they all said....

  10. #10
    Lone Rider's Avatar
    Lone Rider is offline Whatever.
    New Jersey Riders Group
    Join Date
    Apr 2009
    Location
    Dot on the map
    Posts
    6,179
    Quote Originally Posted by Bassdude404 View Post
    What they all said....
    Ditto!

Page 1 of 3 123 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Question Rejet or not Rejet?
    By dbui in forum Honda VTX 1300 Forums
    Replies: 16
    Last Post: 09-23-2010, 12:32 AM
  2. Question How to rejet
    By VTX-MMA in forum Honda VTX 1300 Forums
    Replies: 26
    Last Post: 05-20-2010, 02:26 PM
  3. Question Rejet or Not??
    By LazyDawg in forum Honda VTX 1300 Forums
    Replies: 6
    Last Post: 07-13-2008, 12:58 PM
  4. To rejet or not
    By hijo in forum Exhaust
    Replies: 13
    Last Post: 04-06-2008, 07:08 PM
  5. just had a rejet job
    By tennessee vtx in forum General VTX/Motorcycle Topics
    Replies: 12
    Last Post: 09-28-2007, 11:15 AM

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
  •