KTM LC8 Air Filter Kits by SW7

Discussion in 'Vendors' started by Sporting Wood, Mar 14, 2013.

  1. teambft

    teambft teambft

    Joined:
    Feb 19, 2009
    Oddometer:
    1,201
    Location:
    Brentwood, TN
    Finally worked out my kinks as well.

    Bike now pulls very consistent thru power band. I still need to tune a little for a little more stomp. Need to recheck my float level (yes - PITA) and try leaning my IMS.

    Current situation:
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font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} </style> <![endif]--> [FONT=&quot]2005 KTM 950 ADV[/FONT] [FONT=&quot]500-1000 ft elevation[/FONT]
    [FONT=&quot]Currently 80-90 degree temps and, of course, humid[/FONT]
    [FONT=&quot]Stock ignition[/FONT]

    • [FONT=&quot]Performed OC Wisdom SAS/cannisterectomy removal[/FONT]
    • [FONT=&quot]Installed D&D pipes[/FONT]
    • [FONT=&quot]178fr/180rr mains, needle 3rd clip (small washer on bottom, large on top), 3mm float height, 42 mains and 2.25 turns on the mix screws.
      [/FONT]
    • [FONT=&quot]Sportingwood's intake and ITG foam filter; no airbox
      [/FONT]
    • [FONT=&quot]Flappendectomy[/FONT]
    • [FONT=&quot]Installed Alternate Cycle vacuum fuel pump - using front left manifold outlet to run the vacuum pump. All others are plugged.[/FONT]
    • [FONT=&quot]Coil/spark plug wires are seated all the way down[/FONT]
    • [FONT=&quot]Fresh fuel and inline fuel filter[/FONT]
    • [FONT=&quot]New NGK Iridium spark plugs[/FONT]
    • [FONT=&quot]Used Flowmeter to check synch on carbs 10.5 hg[/FONT]
    • [FONT=&quot]TPS output is about .58 volts[/FONT]
  2. Sporting Wood

    Sporting Wood I

    Joined:
    Oct 18, 2011
    Oddometer:
    902
    Location:
    Horneytown, NC
    Idle air performs several functions within the carb in addition to supplying idle air to the pilot jet. It's size also determines vacuum pressure inside the fuel bowl. Larger air jets = closer to atmospheric pressure. Smaller = more vacuum. Bumping up to larger not only supplies the idle circuit with more air, which is a good thing, but it does so with the side effect of lowering the pressure within the carburetor, a bad thing. This results in slower response for the needle and sometimes less suction to draw fuel through the main jet, all things being equal. With a restrictive filter, increased vacuum somewhat compensates for this though imho, at the expense of proper atomization, efficiency and fuel mileage...

    Using these free flowing setups puts a premium on the need for vacuum. Increasing idle air has a dampening effect on carb operation and seems to drastically move the low end operational parameters in the absence of a restrictive airbox or Uni prefilter. We see a lot more midrange lean issues and tall needle positions to compensate as a result. Not to say more IAJ is totally wrong... There is a certain black magic to getting the balance of air volume to vacuum to fuel correct. A lot of it overlaps and in certain circumstances can be made to work, in the right setup. My experiments showed me though, that it makes far too wide a difference, totally resetting the baseline to which all the rest of the carb is adjusted and shortening the range of idle circuit operation. For my purposes, slight IAJ swap like going from 50 to 52 or 55 is way plenty, more than enough and even then not at all necessary.

    Conversely, lowering the float increases air volume making more air available to get sucked up through either circuit without much change in vacuum or complete baseline changes. In other words, this results in leaner low end operation without as much bleed over effect to the main circuit and the speed and rpm at which the needle goes up.
  3. adiablolex

    adiablolex Lost again

    Joined:
    Jul 30, 2007
    Oddometer:
    3,692
    Location:
    Third rock from the Sun
  4. SpeedyR

    SpeedyR SE in the SE

    Joined:
    Aug 12, 2005
    Oddometer:
    1,257
    Location:
    ATL, GA
    last week I tore into my SE. I had to put new points on the fuel pump and figured I'd add the filter and jet kit while I had the tank off. I had to wait for the jet kit, but here's where I have mine set for now. I may make some adjustments and go back in and just double check a few things but overall, it worked well over 300 miles of dual sport riding this weekend.

    Bike 2007 KTM 950 Super Enduro, Akro dual exhaust, ITG filter w/ SW plate, uni breather (5/8" 124) filter on vent hose, open air carb vents, 700' above sea level (ATL).

    main jets 170/172 (would have put in two of the same size, 172 but only one of each size included in Factory Pro jet kit)
    air jet 45
    factory pro needles, middle notch (3rd position)
    fuel screws about 2 turns out?? (I didn't change them from previous settings, but not sure what it was, will see if I can get a setting for sure this week).

    I did have to adjust the idle a bit higher, but not much and I think that was mainly because I was used to it not being on choke for more than a minute or so and I probably took it off too soon.

    The only thing I noticed was it did seem a bit off on power after it was very warm. When I installed everything friday night and took a quick spin, it would easily loft the front tire in second gear with just power (I was rolling along in second at lower rpms and whacked the throttle open to see if I was getting any bogging before it took off. no bogging just sent the front sky high. Sweet!!). sunday after riding a lot and pretty warm out, it didn't seem to have the same snap. No bogging, just didn't have the same power to loft the front wheel. could have been the outside temps, but would the motor being much warmer affect the power that much? I did have some deeper water crossings, but never stalled it in the water. Will check the filter tonight and see if I can see any issues...
  5. preppypyro

    preppypyro Been here awhile

    Joined:
    Oct 21, 2009
    Oddometer:
    595
    Location:
    Canada's Best Kept Secret, Saskatchewan
    For anyone that it might help in the future...

    My surging problem was a simple solution. I had the carb vents configured wrong. I routed them behind the starter, kinda "down" in the engine, and voila, no more surging.

    Next long trip I make might be this weekend, and I was hoping to figure out riding the bike normal what the fuel economy is now.

    I always hear people say its hard to keep off the throttle when you do mods and I always thought it was bullshit. Well now that I have the cans installed, this intake, the h2w jet kit, I know exactly why people say that.
  6. Thumper996

    Thumper996 Been here awhile

    Joined:
    Jun 23, 2009
    Oddometer:
    596
    My setup including cans is really close to yours. I am getting 34 to 36 mpg under hard high rpm sport riding. probably could get more if my dang wrist didn't keep rolling down.:D
  7. RedRupert

    RedRupert Brit in the Soviet Union

    Joined:
    Jun 12, 2006
    Oddometer:
    635
    Location:
    Riga, Latvia / Bergerac, France / Colchester, UK
    How thick is the Al mounting plate, please?

    Thanks.
  8. preppypyro

    preppypyro Been here awhile

    Joined:
    Oct 21, 2009
    Oddometer:
    595
    Location:
    Canada's Best Kept Secret, Saskatchewan
    Nothing wrong with that hey!

    I have that damn wrist twist problem as well! How do you like the way your bike performs now, all in all?

    I loved the bike before, but with this intake, the jetting, and the cans, its.. well impressive, but just awesome.

    I find Im consistantly cracking the throttle wide open to hear that intake suck in, I love the throaty growl.

    I also find I blip the throttle once in awhile like those stereotypical harley riders, just so I can hear the exhaust note.

    Might get flamed for that one but Im ok with that lol.

    As for the thickness I thought it was 1/4 inch thick, but Sporting Wood will be able to yay or nay that.
  9. Rootkiller

    Rootkiller Been here awhile

    Joined:
    Mar 23, 2003
    Oddometer:
    397
    Location:
    Monroe, Washington
    2006 950,2 into1 wings.
    168/170 mains,45 pilot,factory pro 3rd clip,#70 idle air jets, float at 4mm, very small lean surge around 4400 rpm.I

    Installed #50 idle air jets and now it runs really good. almost fun to work on it also! still playing with the fuel screws(flexi jets) right now at 2 turns out.

    The bike seems to run a little smoother now also.

    A great mod:clap

    at approx 300'elevation
  10. hideehoo

    hideehoo n00b

    Joined:
    May 28, 2013
    Oddometer:
    2
    The stock velocity stacks on a SD 990 look to be about 50mm looking at these measurements.

    http://www.superduke.net/forum/viewtopic.php?f=1&t=14265&start=525#p220227

    With the JC30-65 filter, that only leave about 15mm between the top of the stack and the foam. ITG is recommending 20mm to 32mm here.

    http://www.itgfilters.net/ITG-Filters-Megaflow-Performance-Air-Filter-JC30-65-15JC30-65.htm

    "If using rampipes, there must be an absolute minimum gap of 3/4" (19mm) or
    preferably 1 1/4" (32mm) between the end of the pipe and the underside of the
    top of the filter."


    Seems like the JC30-80 or JC30-100 (if it fits) might be a better option. From what I've found searching on the filter CPR is using, it's about 90mm tall, so at a minimum the JC30-80 should fit.
  11. bikyto

    bikyto Dans le doute...gaz!

    Joined:
    Jun 15, 2009
    Oddometer:
    2,318
    Location:
    Northern Cali
    The rc8 stacks fit but be careful with the fit. They need to be modified a bit as they don't mate the same or they will vibrate out. And your filter will be loose.
  12. Sporting Wood

    Sporting Wood I

    Joined:
    Oct 18, 2011
    Oddometer:
    902
    Location:
    Horneytown, NC
    Good info, thanks.

    FWIW, the unique design in which my filter adapter mounts to the 990 throttle bodies stays put even without the velocity stack. It would be loose and not something one would want to do on purpose, but it won't leak unfiltered air and you may rest assured that it won't flop off like the competition's. :freaky
  13. spillcnz

    spillcnz NZRIDER

    Joined:
    Aug 26, 2013
    Oddometer:
    1
    Location:
    KING COUNTRY, NZ
    Not sure if this is the correct place to write this as i am new to ADVRIDER but would like to say thanks to Chris from Sporting Wood, his replacement air filter for my KTM 950 works great.

    [​IMG]

    I installed the filter and jet kit following Chris,s set-up instructions, bike fired up and ran perfectly, did not have to tweak anything, the power gain is amazing, could not believe it was the same engine, much stronger through the mid-range and top-end.

    Power delivery is smooth with cruise nice and steady, bike is alot more fun to ride and a pleasure to work on with that horrible airbox gone, a MAJOR PLUS.

    Highly recommend this set-up, great price also.
  14. Sporting Wood

    Sporting Wood I

    Joined:
    Oct 18, 2011
    Oddometer:
    902
    Location:
    Horneytown, NC
    Thanks for the props from NZ! Glad you are happy with the mod.

    Dig the old 2 smoke Suzuki. I have a couple GT750's myself. :freaky
  15. DJAdv

    DJAdv n00b

    Joined:
    Apr 25, 2007
    Oddometer:
    7
    Location:
    Sydney, Oz
    Any update on the 990 version?
  16. Sporting Wood

    Sporting Wood I

    Joined:
    Oct 18, 2011
    Oddometer:
    902
    Location:
    Horneytown, NC
    They're shipping tomorrow! First batch is sold out. I'm estimating another 3 or so weeks to get another couple dozen ready. Get your order in early! These are really nice and I've improved the design considerably since my first few attempts. Good R&D takes time!:freaky
  17. DJAdv

    DJAdv n00b

    Joined:
    Apr 25, 2007
    Oddometer:
    7
    Location:
    Sydney, Oz
    Excellent, thanks mate! Looking forward to receiving mine.
  18. Sporting Wood

    Sporting Wood I

    Joined:
    Oct 18, 2011
    Oddometer:
    902
    Location:
    Horneytown, NC
    Your's is shipping today. Got most of the US shipments yesterday, saved the internationals for today.

    You all should have an email in your inbox by later today. If you don't get one, let me know.:freaky.


    [​IMG]
  19. EastSideSM

    EastSideSM Isn't that dangerous?

    Joined:
    Mar 30, 2008
    Oddometer:
    1,491
    Location:
    Providence, RI
    Hey Sporting,

    do you have any kits in stock for a 2006 950 SM?

    I have a Factory Pro jet kit I have been tinkering with. I run Wings exhausts with inserts and stock filter at the moment (tried a BMC but just couldn't get a good seal on it.) I LOVE the idea of getting rid of the airbox though. Right now I'm running stock airbox and snorkel, stock needles (clip in 3rd position form top), 45 pilots (from 42 stock) and went from 155F/160R (stock mains ) to 158F/165R. I did cure a surging I had when cruising at about 75 in 5th gear (no tach so I'm not sure what RPM's that translates to.) Gained a little more response everywhere also, but after reading this thread, your setup sounds like what I have been looking for (more power across the board, MPG is not my driving factor as i didn't buy this bike for fuel economy!!). I am at sea level, I don't ride much elevation here in the Northeast, so minimal elevation gains on a daily basis.

    Thanks
  20. Sporting Wood

    Sporting Wood I

    Joined:
    Oct 18, 2011
    Oddometer:
    902
    Location:
    Horneytown, NC
    I have plenty of plates but the new 990 kit orders have stripped me clean of filters. I have more coming in next week, so that'd be a quick as I could ship. Could send it out the same day I receive them.

    I do however have the domed version of the filter for the SuperEnduros that would fit but its more$ and you'd have to cut down your velocity stacks to fit it. Probably best to wait, sorry.