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jetting

  1. Greetings /My bike/ JE big bore Question

    Africa Twin
    Hello, I have been reading the forum since years but that's my first post, so finally greetings everyone! My name is Orestis and this is my beloved and abused xrv: My bike's main modifications are: Boano Sachs 48mm fork, Nitron ntr pro shock, jetting/pump/air/exhaust, controls/levers etc...
  2. Carb Jetting on UK XR400R 2004

    XR
    To improve starting, I'd like to take the carb back to the original (UK) settings. I have a manual showing Main Jet 142 and Slow Jet 52. However, the manual appears to be for USA models. Would UK models have been fitted with the same jets?
  3. Carb Jetting on UK XR400R 2004

    XR Technical Specs
    To improve starting, I'd like to take the carb back to the original (UK) settings. I have a manual showing Main Jet 142 and Slow Jet 52. However, the manual appears to be for USA models. Would UK models have been fitted with the same jets?
  4. K & N Filter?

    Dominator / FMX
    Hi All, I was wanting to get rid of the air box and put a K&N filter or similar on and wanted any advice on size, type or shape. As you can see from the attached it must be possible. Also probably need re jetting so again any or all advice welcomed. BTW K&N were less than helpful when I asked...
  5. I don't get it ?

    Dominator / FMX
    Since Ive had this bike, about 3 1/2 years or so, its never been a quick or good starter or go that well, and have had an increasing problem with stalling at idle So over the last year or so Ive done quite a few things to try and solve or at least improve things, get it running nicer etc New...
  6. Dominator Exhaust Replacement Options

    Dominator / FMX
    I am thinking of maybe getting replacement exhausts / silencers, mine are standard If you have replaced your Dominator exhausts, I would love to find out all about them Please could you answer these questions to help me decide What is the make of your replacements ? How much were they in...
  7. Carburetor rebuild parts

    Transalp
    Good day fellas. Sitting here in Chile waiting for the bike and even with the dramatic increase of beautiful women around me I can't help but also think about the carbs. Turns out they are to blame for the horrendous fuel consumption and poor first gear performance. I've found rebuild kits...
  8. 1988 NX650 Problem... running super hot!

    Dominator / FMX
    I'm trying to restore a 1988 NX650.. the bike used to run great years ago and it still runs great. The only problem is the exhaust pipes get cherry red within 10-20 seconds of starting... I measured the temperature with my temp gun and it shows 700f + What could be causing this? Could it be...
  9. Hi All, long time no see - jetting question on my RD04

    Africa Twin
    Hi - running standard carbs and airfilter but with very free flowing (fekin loud) exhaust - standard jetas are 118f 122r - whats the best guess to go up to? Put the 122 on the front carb and get a 125 on the rear? Wemoto only do them in .05 increments so it would have to be that or get 2 new...
  10. Dave's mod?

    Dominator / FMX
    As I fitted a Wiseco hi-comp piston to my Dommie, and I'm considering exhaust options (XR headers, 2 into one, different silencers), I wondered about jetting, and also about 'Dave's mod' which I've seen mentioned a few times here but searches yield nothing. So, can anyone point me to 'Dave's...
  11. Ready for Winter Again!

    Dominator / FMX
    This little bike is mainly used during the colder months when others are put away. What that means is every summer it comes part for a good cleaning and service. This year that took a little longer as in sorting out the jetting, new ACOV diaphragm and new choke it produced a bad stutter around...
  12. re-jetting on the bike.

    Dominator / FMX
    Quick question. Has anyone ever re-jetted their bike while the carb is still on the bike? I've got a adjustable Super trap exhaust on my Dommie and I know I can tune to match the carb with that, but I've found a setting that I love the sound of. Not too loud but enough of barrrrrp. So I...
  13. Looking forward to next week.

    Dominator / FMX
    I am soooo looking forward to next week. I havnt been out on my Dommie scrambler in ages because I got fed up of taking my carb on and off to try and get the jetting sorted after my modifications. I couldnt get it quite right so I gave up. I bought a 41mm Keihin flatside carb for it a while ago...
  14. XR600R carb help please

    XR
    Hi all need a little help with jetting up my carb & hopefully someone on here will have the answers. My bike is an xr600r 1986 which iv converted to a supermoto. Single carb with a 640 big bore kit FMF hi flow manifold. Inlet carb end has been ported airbox has been modded with an hi fow air...
  15. Very quick jetting question

    XR
    Hi guys I'm back on an XR400 (2001) I think :-/ I am green laning and want to know what the best jets to use are? Standard pipe with the standard insert REMOVED (can't believe I found a bike with that still in it tbh) and a bit of open pipe bolted in to keep it a tad quieter. snorkel...
  16. Carb conversion for fuel injected motor - 1000 varadero

    Varadero Technical Specs
    Hi people. I've put a 2006 six speed fuel injected motor into my 99 bike. I've just used the motor and the carbs from my bike. Had to make a few connector mods and thr original thurmostat housing and water pump cover plus the stator but everything pretty fitted perfect. Only problem is that...
  17. Parts for sale (engines, carbs etc)

    Dominator / FMX
    That's it - all gone. *** COME ON LADS, I'VE GOT MORE BIKES ARRIVING NEXT WEEK, ALL THIS STUFF WILL END UP GOING TO LANDFILL IN THE NEXT TWO WEEKS - MAKE SOME OFFERS**** ***FINAL CLEAROUT - ALL FOR SALE AS A JOB LOT £150 O.N.O.- BRING A VAN AND TAKE IT ALL AWAY**** SLR650 silencers FX650...
  18. Where to buy new/bigger jets?

    Africa Twin
    Hi guys, I have been reading lots on this forum today, it seems that from other users who have done the jetting thing, they have the same set up as me, piper cross foam air filter and motard venue exhaust. They say a number 118 or 120 jet is correct to make up for the richening the engine. But...
  19. 2000 Dominator Carb removal and re-jetting help please.

    Dominator / FMX
    As you may know I've replaced the original silencers on my 2000 NX650 with the end cans off a Triumph Street Triple (see original post). Now the winter nights are here I'd like to 'up' the main jet a bit as per comments on other people's posts about changing exhausts & air filters. So, I've...
  20. 280 big bore jetting

    XR
    I am fitting the 280 kit on my 2004 xr250l I am running standard air box, snorkel removed, k&n filter. 250 r larger header pipes to FMF Q4 pipe Mikuni 88cv carb and 1000ft above sea level Any ideas on where to start on jetting the carb Thanks
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