KTM 530 EXCR- More better!

Discussion in 'Thumpers' started by neduro, Apr 3, 2008.

  1. xathor

    xathor Not actually Gnarly

    Joined:
    Aug 2, 2009
    Oddometer:
    449
    Location:
    Huntsville, Alabama
    Changed the oil at 4.5 hours after the re-ring. Came out a little shiny under flashlight inspection but the full amount that I put in came back out.

    :clap
  2. mflora98ss

    mflora98ss Dual Sportin'

    Joined:
    Apr 10, 2012
    Oddometer:
    710
    Location:
    Van Etten, NY
    Oh she's hit the dirt all right.... that's how she likes it is dirty Jack! All it takes is a little simple green and some pressure washer action.
  3. KMC1

    KMC1 There is no spoon.

    Joined:
    Sep 13, 2008
    Oddometer:
    2,570
    Location:
    Greater SLC
    Any of you guys running the 25 liter tanks, I have a question for you.

    When I start running my bike hard and it gets hot, my gas starts to get boiled. I see it in the vent tube at the gas cap actually bubbling into the tube and my catch drain gets gas in it. The worst part is the bike starts to run terrible, won't start, keeps shutting off if the revs get too low, etc.

    I think it's actually getting too much gas to the carb.....i think the fuel lines actually become pressurized and I've seen it drip from the air box. (Not from being tipped over)

    I have both lines plumbed to the bike, and I think it's because the line on the throttle (right?) side of the bike comes so close to the exhaust and then right alongside the head. I have the lines doubled up and I put a heat wrap over it as well. But I think it's still getting so hot that its boiling the gas inside that fuel line.

    Has anyone else seen this happen?

    Also, I'm thinking of just going to one line on the non-throttle (left?) side and just removing the other line completely to take the heat source away. Aside from having to slosh the gas into that side of the tank when it gets low - is there any other reason that would be a problem?

    :ear :freaky
  4. Hodakaguy

    Hodakaguy NorthWest Adventure Rider

    Joined:
    Jul 30, 2007
    Oddometer:
    2,143
    Location:
    Eastern WA State

    I sleeve the fuel lines in insulated fire sleeves (available at auto parts stores) that helps keep the heat out of the lines, that with careful routing helps to keep the fuel in the lines cool. I've used larger fuel line to sleeve the fuel lines in as well in the past, pics below.

    You'll also get a lot of heat from the engine that soaks directly into the tank, you can line the bottom of the tank with a stick on foil heat tape that helps as well.

    What vent are you running on the fuel cap? If its a small unit with the built in check valve toss it! I've seen more than one fail closed, letting the tank pressurize. A vent line from the tank with no check is the way to go.

    Here's a link to some pics on my original 530: http://www.advrider.com/forums//showpost.php?p=12592096&postcount=388

    Hodakaguy.
  5. windyhill

    windyhill Adventurer

    Joined:
    Apr 7, 2011
    Oddometer:
    64

    Can't offer a comparison to the JD kit, but I have been running the Blais kit since my bike was new in 10'. Very pleased with it.
  6. mflora98ss

    mflora98ss Dual Sportin'

    Joined:
    Apr 10, 2012
    Oddometer:
    710
    Location:
    Van Etten, NY
    Does anybody know how the Blais kit differs from the JD kit? Just wondering if they have different jet sizes.
  7. Bungholio

    Bungholio Been here awhile

    Joined:
    Oct 9, 2008
    Oddometer:
    808
    Location:
    Aberdeen, WA
    Probably the custom tapered needles in the JD kit.

    Sent from my Galaxy Nexus using Tapatalk 2
  8. Foot dragger

    Foot dragger singletracker

    Joined:
    Dec 27, 2006
    Oddometer:
    12,970
    Location:
    chico,just below rag dump(nor-cal)
    I dont know the difference,but,the JD jet kit in my 530 works great,gets good mileage,fires up easily,warms up quick and off it goes.
    Nice snappy power with no popping or problems.

    Probably some jet kit installers dont take the time to dial things in,who ever jetted mine did good.
  9. mflora98ss

    mflora98ss Dual Sportin'

    Joined:
    Apr 10, 2012
    Oddometer:
    710
    Location:
    Van Etten, NY
    What kind of fuel mileage are you getting? I'm getting around 30 mpg with the JD kit. I'm not sure if that's good or bad...she really rips though.
  10. Foot dragger

    Foot dragger singletracker

    Joined:
    Dec 27, 2006
    Oddometer:
    12,970
    Location:
    chico,just below rag dump(nor-cal)
    If I can refrain from doing wheelies and broadsliding every minute or so I get mid 40's on mileage.
    Its a hot rod,not a mileage machine.

    To me its just a dirtbike with a plate, and that's how I tend to ride dirtbikes that make enough power to play with.
    But it really doesnt do much worse then low 40's most all the time.

    I need to put 1 size smaller pilot jet in as I have the fuel screw set on full lean,it runs so well as is I havent made time to mess with it.

    The end of the muffler never has any black soot showing inside it so its not overly rich at most rpm ranges,it seems like most bigger 4 stroke singles my buddies own either pop or run kinda rich,who ever did the jets on mine got it pretty good,it runs about the same at higher altitude.
  11. Bungholio

    Bungholio Been here awhile

    Joined:
    Oct 9, 2008
    Oddometer:
    808
    Location:
    Aberdeen, WA
    Same as foot dragger here, mid 40's all the time all around riding.
  12. braymond

    braymond n00b

    Joined:
    Sep 13, 2010
    Oddometer:
    7
    Location:
    Yucaipa

    Average about 45 mpg all around riding with the jd kit. Never has been lower than that. Like Foot Dragger said, "its a dirtbike with a plate" so ride it like you stole it. Fuel + tires = $$$$=FUN= priceless
  13. Foot dragger

    Foot dragger singletracker

    Joined:
    Dec 27, 2006
    Oddometer:
    12,970
    Location:
    chico,just below rag dump(nor-cal)
    I had mine out in Nevada recently,I sat back and let it run up a slightly uphill sandy straight road...........I look down its going 90 and still pulling good. Jeechrise they really dont lack for pulling power!
    Mine is jet kit only with Q muffler. 14/50 gearing.
  14. bigborefan

    bigborefan Making new friends

    Joined:
    Jul 15, 2007
    Oddometer:
    1,787
    Location:
    USA - Midwest, Central Illinois
    I run some jetting specs I got from the KTM dealer in Santa Cruz CA. I think I am a little fat, but she runs real nice, starts easily, no issues. I got a big tank and don't do any epic out west rides, so I am content with it.
  15. Honkey Cat

    Honkey Cat Tailights Fade!

    Joined:
    May 5, 2011
    Oddometer:
    1,165
    Location:
    SW Florida
    I did Not by JD jet kit I call Jeff Slavens he sold me a couple jets it was a total of about five dollars and in Colorado the ktm ran perfect from 6k to 13 k. Im from florida.
  16. antpatterson

    antpatterson XR650L_High_Runner

    Joined:
    Nov 25, 2009
    Oddometer:
    378
    Location:
    South MS
    need some help here guys. My 08 450 xcrw just had a full rebuild and was running until some smoke appeared. My mechanic traced it the crank shaft seal, he installed a new one the same way as the old which is also the one that has failed. question is should the seal have the inner spring facing toward the bike or the clutch cover? just wanting to check because I know some seals came from factory backwards. the one seal was facing with spring part inside the engine so he installed a new one which failed so now I got another new one waiting to figure this out.
  17. cactusone

    cactusone n00b

    Joined:
    Jun 28, 2007
    Oddometer:
    7

    Spring faces the crank. I went to the 2009+ seal on my 08 after I replaced 2x, now no prob's. Some say it won't fit correctly but 60 hrs and works great, the 08 is pretty poor if you ask me the 09 is thicker.
  18. antpatterson

    antpatterson XR650L_High_Runner

    Joined:
    Nov 25, 2009
    Oddometer:
    378
    Location:
    South MS
    So I have the bike back in my hands and got another issue. My mechanic said he did some research and found out that the crankcase breather hose is why oil is pushing back into my carb and to disconnect it. My dad and I have disconnected the hose from the crankcase and left the carb running to the top of the engine together with the t-joint blocked off. Now we have the hose from the crank blocked somewhat so that oil can get out because it keeps wanting to push out, is this normal? Is it because too much oil is in the engine?
  19. dualindalton

    dualindalton Been here awhile

    Joined:
    Jun 9, 2008
    Oddometer:
    130
    Location:
    North Ga.- between East and West-
    I am ready to replace the rear shock spring and need a little guidance on what spring rate to go with. For reference I weigh-in at 190lbs, add riding gear that includes a camelback full of water adds another 15lbs and last are my wolfman saddle bags and tail bags with some tools and a few other essentials which puts another 20lbs for a total of 225lbs.
    Is anybody weighing/carrying about the same load that could recommend a spring rate? I have looked at the race-tech site but their calculator only ask for rider weight without gear. Based on that it suggests going to the next heavier spring rate than stock.
    Also does anyone have any opinions on straight rate vs. progressive springs? At 55 years old I'm no longer in race mode but do have those "moments" where twisting the throttle and acting like I'm 17 again do arise. I'm getting tired of having to straighten out my tag from bottoming out when the fun factor kicks in.
  20. fast4ward

    fast4ward Adventurer

    Joined:
    Jun 23, 2010
    Oddometer:
    86
    Location:
    Hollister, CA
    If you take a look at the RaceTech site, they have a calculator that figures out what spring rate you need based on your bike, your physical characteristics and the kind of riding you do.