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What Jets Do You Run?

Discussion in 'Fuel / Air' started by BadBrad, Aug 6, 2009.

  1. toomanybikes

    toomanybikes not enough time 4 riding
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    After a few mods (xXx carb, Thunderheart ignition, S&S 600 cam, S&S 2 into exhaust) I am running a 32 intermediate and a 78 main.
     
  2. BWG56

    BWG56 Guru

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    32 & 78 with VH 2 into2, S&S Dual runner and .585
     
  3. Tom Chop

    Tom Chop Active Member

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    '06-K9, 117cu.in. S&S Super "G", V&H 2/2 with full baffles, Speed`s Performance Plus 90deg. Intake facing foreward, 120-350ft. above sea level, #80 H/S, #32 Intermediate. Fuel Bowl Bleed #80, Accelerator Pump Screw backed out almost all of the way.
    I'm getting 36 to 38 mpg. and making good power with no spitting or coughing. Throttle response is immediate and strong.
     
    #23 Tom Chop, Feb 24, 2013
    Last edited: Jun 6, 2013
  4. toolmaker

    toolmaker New Member

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    I seem to be the only one running a Mikuni carb. I have a TP 107, K&N round air cleaner, hooker 2 into 1 with adjustable baffle running wide open, 22.5 pilot jet, 175 main, standard needle in middle slot, idle adjustment set at 1.75, with accelerator pump set at 0 for immediate activation.
    Runs great.

    Dave
     
  5. Srodden

    Srodden Well-Known Member

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    05 mastiff original cam V&H 2 into 2 29.5 and 71
     
  6. ZeDevil

    ZeDevil Member

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    03 Chopper @ Sea level,
    32 int and 80 main ,
    V&H Shortshots Staggered exhaust,
    everything else is stock.
     
  7. francoblay1

    francoblay1 The Spaniard

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    @ Sea level
    32/78
    60 Air Bleed
    xXx Booster kit
    D&M cone, Vertical
    TH Programable Ignition (#3)
    585 Cam
    V&H 2-2, with BCT Baffles.


    :2thumbs:
     
    #27 francoblay1, Aug 31, 2013
    Last edited: Jul 1, 2014
  8. Germanbiker

    Germanbiker Active Member

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    My Bike(s):
    08 Pitbull / 13 MV Agusta Brutale RR
    34 (custom made by Bob Maltz)/82
    bored xXx Carb
    highly modded air filter case with K&N 3323
    TH Programable Ignition
    585 Cam
    Penzl exhaust with X pipe (EC legal)

    NOT running rich!!
     
    francoblay1 likes this.
  9. francoblay1

    francoblay1 The Spaniard

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    What elevation are you at? (from Sea Level)
     
  10. Germanbiker

    Germanbiker Active Member

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    app. 250 m. But temperatures here are much less than in Spain (I suppose).
    Jochen
     
  11. francoblay1

    francoblay1 The Spaniard

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    Yup, the colder the air is, the bike runs leaner. :2thumbs:
     
  12. haze324

    haze324 Active Member

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    My Bike(s):
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    I have a stock 03 Chop. Recently changed the S&S air filter to a K&N and had some decel popping, and loss of throttle response. Bike had stock jets 29.5 and 70 and ran great with S&S filter, plugs were a tad light, but bike ran great.

    So I bumped them both up to 31 and 72. Immediately the decel popping was gone and throttle response was back. However, seat of my pants, I don't think there is any difference with the K&N....in fact I think it ran a tad harder/faster with the other filter and jets. Perhaps I just need to get the carb just right. Bike does run really good right now, just not sure if it's any better than before? I'll probably just leave it as is...and send the carb to XXX soon! :)
     
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  13. francoblay1

    francoblay1 The Spaniard

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    :2thumbs: :D

    :cheers:
     
    #33 francoblay1, Sep 10, 2013
    Last edited: Sep 10, 2013
  14. zenBD

    zenBD Active Member

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    Hey guys... I'm in Fl... getting some popping on decel... Running stock carb/air cleaner & VH 2-2 big radius. I had Carl's Speed Shop jet the carb for the pipes. They basically told me "they just do that with that set up" when I asked them how to eliminate the popping. I have a hard time believing this. They installed 31/76. Does this sound about right? Bike is all stock other then the pipes... 08 k9. I rode it once (when checking it out before buying it) in OH when it had the stock jets....it popped a bit, but I figured that conditioned would be cured after Carl's did their work, but it didn't seem to pop nearly as much then as it does now. Any thoughts? I read a thread about vacuum caps dry rotting, but I don't know where to find them to check them out. Any help would be much appreciated.




    Sent from my iPad using Tapatalk HD
     
  15. francoblay1

    francoblay1 The Spaniard

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    Vacuum Caps are located right on top of the Carb, it´s black and it´s hold in place by a small zip-tie.

    See the black thing on top?
    [​IMG]
     
    #35 francoblay1, Oct 5, 2013
    Last edited: Oct 5, 2013
  16. zenBD

    zenBD Active Member

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    Yep...thanks! Found it. Is this something I could pickup from Harley, or would I have to go to S&S for it? I just took the bike out today... I've never ridden any other Big Dogs do I don't know how it should behave...that being said, I feel like it hesitates to much...
     
  17. okie_dog

    okie_dog Guest

    09 k-9. XXX "G" carb, S&S Dual Runner Intake, V&H 2 into 2 big radius with BCT monster baffles, stock cam. 33 Intermediate, 76 main, 60 air bleed.
     
    Kenai likes this.
  18. Slipngrip

    Slipngrip New Member

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    awesome thread..... I guess I should have read this before posting my questions else where...
    great info!!!
     
  19. StreetHog

    StreetHog Active Member

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    07 K9. Just bought it and it came from sea level to 3500 feet above. It has the wimmer twin spike air cleaners and V&H big radius exhaust, no baffles. I took the float bowl off yesterday and it had the stock 295/74 jets. I fattened it up with a 32/78 but still seems lean according to the plugs. At 65 mph it spits and splutters quite a bit. Yes I readjusted the idle mixture and accel pump after rejet. Do I need to up the intermediate jet some more to rid the sluggishness? It seems to run fine at 3000 rpm but kinda falls on its face between 2000 and 3000
     
  20. francoblay1

    francoblay1 The Spaniard

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    Typical transition between jets.... go up on the Air Bleed jet.... go to a 60.

    No need to go up on the Inter jet?... I am at Sea level and with the 32 is just fine... you are higher so... you should go no bigger than 31/32... which it´s the recommended for the V&H exhaust... (and maybe 76/78 in the Main) but again... every bike is a bit different.

    :cheers:
     

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