1. After 20+ years it's time to pass the torch. If you are interested in acquiring this forum please contact support@cv-performance.com for details. Any spam will be reported and blocked.
  2. Welcome to Bike Talk, a forum for all bikers and motorcycle enthusiasts. If you are new to Bike Talk, be sure to register for free and join the conversation.

    There's always someone around willing to help out with questions or give a friendly wave back. All Harley and metric riders are welcome.

Replacing the carb

Discussion in 'Motorcycle Tech Talk' started by drillsarge, Jul 14, 2007.

  1. drillsarge

    drillsarge Active Member

    Joined:
    Jun 3, 2007
    Messages:
    205
    Likes Received:
    0
    Location:
    Kentucky
    My FX has the original Kehein carb,30 yrs old, am putting a Bendix on this evening or tomorrow. Any advice on tuning is greatly appreciated. Will let yall know how she runs after i install it.Plus, this will be my biggest wrench project so far, might take me a minute:D
  2. drillsarge

    drillsarge Active Member

    Joined:
    Jun 3, 2007
    Messages:
    205
    Likes Received:
    0
    Location:
    Kentucky
    wrong thread found some advice in a thread that was already started:D my bad
  3. RATAYLOR

    RATAYLOR New Member

    Joined:
    Oct 17, 2005
    Messages:
    15
    Likes Received:
    0
    Location:
    MURFREESBORO, TENNESSEE
    Don't Pitch That Keihen Carb

    I HAD TROUBLE WITH THE CARB ON MY 78-1/2 FXE(SWITCH TO ELECTRONIC IGNITION MID YEAR). I THOUGHT IT WAS THE STOCK PRESTOLITE IGN. GETTING TIRED(FOULING PLUGS):mad: AND STARTED SHOPPING FOR AFTERMARKET IGN.. AS IT TURNED OUT, WHILE I HAD THE CARB OFF TO REPLACE THE ACC. PUMP DIAPHRAM, NOTICED THE RUBBER PLUG(HELD IN BY THE FLOAT BOWL) FOR THE LOW SPEED JET WAS CRACKED AND LOOSE IN THE HOLE. MADE ONE FROM BRASS, PUT A SLIGHT PRESS FIT ON IT AND NO MORE PROBLEMS. I GUESS THE MAIN JET HAS TO METER WHAT GOES TO THE SLOW SPEED JET.
  4. drillsarge

    drillsarge Active Member

    Joined:
    Jun 3, 2007
    Messages:
    205
    Likes Received:
    0
    Location:
    Kentucky
    Thanx Cuz, I did keep the keihin, but went ahead with the Bendix and aftr adjustments it runs smooth as silk. This scoot will cause me to either be a good wrench or get big headaches. I am slowly earing and getting a little shop together at my house and am considerin' a Mechanics course. Do you recommend any. I checked one online called PennFoster out of Pa.Anyways, thanx again.:cool:
  5. voodoochild

    voodoochild New Member

    Joined:
    Dec 8, 2006
    Messages:
    1,406
    Likes Received:
    0
    Location:
    Stanton, NJ
    Hey Drillsarge, forget the course. I think hands on and asking questions is the best way to learn. As long as you have a manual, and us.......you should be good. I buy tools as I need them, for whatever I'm doing on my bike. You're already doing great, look at the stuff you've done so far. :D
  6. cowboy

    cowboy Moderator Staff Member

    Joined:
    Apr 19, 2006
    Messages:
    9,926
    Likes Received:
    50
    Location:
    Alvin TX
    voodoochild is right :roflmao: read the book & here as well just ask away & someone will answer , & beside's it free this way & you'll have more to spend on your bike
  7. drillsarge

    drillsarge Active Member

    Joined:
    Jun 3, 2007
    Messages:
    205
    Likes Received:
    0
    Location:
    Kentucky
    That settles that, no one here in Paris, KY that i am aware of works on any kind of bike gotta go to lexington or elswhere. Saw some posts and comments about bolts thru pipes, will the carb need to be retuned after this is done cause i'm guessin' the pipes should be removed for the drilling so that the holes have the same placement.:)
  8. cowboy

    cowboy Moderator Staff Member

    Joined:
    Apr 19, 2006
    Messages:
    9,926
    Likes Received:
    50
    Location:
    Alvin TX
    Sarge when you do the carb , be sure to keep A eye on the intake gasket's when putting it back together sometimes the lip will turn in & cause a leak & the bike will not run right , suck's to much air in , Then just tighten it up
    On the pipes are you changing or installing baffles if so try to make the holes about the same in each pipe , this make both cylders more balcenced to each other
  9. RATAYLOR

    RATAYLOR New Member

    Joined:
    Oct 17, 2005
    Messages:
    15
    Likes Received:
    0
    Location:
    MURFREESBORO, TENNESSEE
    I think most agree that the FACTORY manual should be purchased the day you ride off with you bike. Got mine in "the reading room";) . Use it along with a little common sense and help from the forums and you'll be just fine.
    The old shovel takes a bit more attention but keeps me on my toes to keep it shaking, rattling, and rolling.:biker:
  10. drillsarge

    drillsarge Active Member

    Joined:
    Jun 3, 2007
    Messages:
    205
    Likes Received:
    0
    Location:
    Kentucky
    Cowboy, I have straight drags. Am not planning on changing the pipes or adding baffles. Might put some new wrap on 'em though. If the1/4" bolts will improve performance then that is the way I will go. My start button went bad so I am putting a heavy duty start button on the left side and bypassing the handle-bar button. Will let you know how it works.:cool:
  11. fxdxsteve

    fxdxsteve Active Member

    Joined:
    Aug 1, 2007
    Messages:
    213
    Likes Received:
    0
    Location:
    san leandro ca
  12. whacker

    whacker Active Member

    Joined:
    May 7, 2006
    Messages:
    276
    Likes Received:
    0
    Location:
    Newaygo,Mi.
    Hey thanks for the link...fxdxsteve....:cheers:
  13. fxdxsteve

    fxdxsteve Active Member

    Joined:
    Aug 1, 2007
    Messages:
    213
    Likes Received:
    0
    Location:
    san leandro ca
    lots of good info on that site
  14. drillsarge

    drillsarge Active Member

    Joined:
    Jun 3, 2007
    Messages:
    205
    Likes Received:
    0
    Location:
    Kentucky
    Solid Cuz:D great ink thanx fer the info:cool:
  15. cowboy

    cowboy Moderator Staff Member

    Joined:
    Apr 19, 2006
    Messages:
    9,926
    Likes Received:
    50
    Location:
    Alvin TX
    Sarge I had to do the same thing on my 73 Shovel Just see if you can find a water proof button , or put it where it won't stay wet or it will short out , I also used some shrink on the wire's
  16. fxdxsteve

    fxdxsteve Active Member

    Joined:
    Aug 1, 2007
    Messages:
    213
    Likes Received:
    0
    Location:
    san leandro ca
    I made a manual push button on my solenoid but you can buy them on ebay I'm too cheap so I made the plunger on my lathe in my garage and drilled a hole in the endplate on my mill got a rubber grommet at the hardware store on my dyna the hotwire for the killswitch and the starter button are the same so the juice was being drawn away from the ignition and made it start hard when cold bypassed the starter button and put in the manual starter no more starter problems
    Last edited: Aug 2, 2007
  17. drillsarge

    drillsarge Active Member

    Joined:
    Jun 3, 2007
    Messages:
    205
    Likes Received:
    0
    Location:
    Kentucky
    Got one at the local shop (American Legends) in Lexington for $11. Got a bracket and an inline fuse for the pos cable from the best Audio installers in this area( Car Stereo Warehouse) ,cheap plug I know, for free and that good friends is my favorite price. I wrapped the wires and would a lite coat of silicone or graphite protect the switch from moisture. I may go with some kind of housing when I get into it this winter but those ideas are for a thread when winter projects come up.:cool:
  18. hotroadking

    hotroadking Super Moderator Staff Member

    Joined:
    Jun 16, 2004
    Messages:
    13,682
    Likes Received:
    584
    Location:
    Mouseville USA
    Drill sarge

    GO BIG BLUE!


    UF Sucks and I have to live around a buncha gators, christ BillyG better whup up on them they are getting about as big headed about basketball as they are about football!

    Anyway back to bikes, FWIW if you can get your hands on a late model CV carb and there is a spacer/adapter plate I'd go that route, better performance, mileage and starting. You can pick one up at a dealer or local shop maybe a takeoff or on ebay, post on HTT for one. Tons are laying around.

    Also, you need to either put the baffles back in or run the bolts, you don't need to drill holes through you should have one hole in each drag muffler, most run a thumb screw with a hole drilled in the center or one of the hoop type short screws with the loop on one end.

    Nut it on the threads so that it's in the center of the pipe, and then put it through the hole and nut it down on the outside, loctite is your friend

    This will give you back the correct exhaust pulses you need to keep the low end power up, believe it or not no baffles equals lost bottom end power from 2000 to 4000, right where you ride.
  19. drillsarge

    drillsarge Active Member

    Joined:
    Jun 3, 2007
    Messages:
    205
    Likes Received:
    0
    Location:
    Kentucky
    Yes they do every time I check the math 7 is still more than 2 and everything they have done won't be worth jack if we beat em in football and Billy G will git 'er done Big Orange will get peeled too.:roflmao:

Share This Page