KTM 380 Anyone?

Discussion in 'Thumpers' started by Griff, Apr 19, 2006.

  1. potatoho

    potatoho Cheese and Rice!

    Joined:
    Aug 3, 2004
    Oddometer:
    4,709
    Location:
    Sea-level
    I have a 380 that I've not been able to ride because the motor sucks oil. I was very close to putting in a sweet late-year 250SX motor but the deal fell through. I honestly think that would have been awesome. My 300 has an aftermarket CDI and pro-lite piston, and it revs to infinity which feels insane. I think the 250 would be even moreso.
    #21
  2. Rusty Rocket

    Rusty Rocket Life behind "Bars"

    Joined:
    Dec 22, 2005
    Oddometer:
    12,257
    Location:
    Trying to leave CT, moving to TN
    Spooge is part of the equation. I have a 2000 250exc and spent the best part of a year trying to jet it. I was trying to get rid of the spooge and the "run-on" when the throttle was closed. (it would continue revving after I stopped and was sitting with the throttle closed.) One of the tricks is to set the idle as low as possible w/o stalling. I ended up getting the JamesDean jet kit and all problems solved, Except Spooge. Learn to live with it. Change the muffler packing often. Check out KTMTALK it has a dedicated jetting thread and JamesDean himself checks in and helps. Save yourself the trouble and spend the money for his kit. It works. He gives you 2 proprietary needles that work much better than anything out there.
    #22
  3. potatoho

    potatoho Cheese and Rice!

    Joined:
    Aug 3, 2004
    Oddometer:
    4,709
    Location:
    Sea-level
    You can actually get things running with zero spooge. But well, if you work all of the throttle positions during your ride then it's a challenge. It still pollutes particulates but it's all cocoa powder looking stuff by the time it reaches the endcap.
    #23
  4. LILBIT

    LILBIT Ride you must.

    Joined:
    Oct 17, 2007
    Oddometer:
    1,675
    Location:
    Lake Placid, FL
    If you want to keep the NOZ needles ask around and see is you can find someone with 1 size larger and smaller base diameter. Your KTM dealer can get them but they are $20+- each. I tried a few but never could get them smooth enough for my liking. I'd try the NOZI and 35 just to see if you already have it. Potatoho's choke plug he mentioned make a easily noticable difference in throttle response. I never had a problem starting with it plugged until i went to the mountains. Jetting was off as well making things worse. I gave up kicking. Half way down the steep ass drive way the rear tire would grab and i just had time to turn at the bottom and avoid a huge drop off . The 1st time REALLY had me puckered but it worked for morning starts!
    #24
  5. cRAsH

    cRAsH Banned

    Joined:
    Jul 6, 2001
    Oddometer:
    19,324
    Location:
    Nicetown, USA
    :bluduh

    I live at 7200', and generally go up from here.
    #25
  6. LILBIT

    LILBIT Ride you must.

    Joined:
    Oct 17, 2007
    Oddometer:
    1,675
    Location:
    Lake Placid, FL
    Mine was bad because i showed up jetted for sea level and 90 degrees. It was 60 degrees there at 4500'. Had to quess at a place to start on the needle setting. Properly jetted the plug is not an issue. Mine is still a 1-2 kick deal when cold at home. The enrichment circuit stll works just not the air bleed(no high idle). Now i've just have to hold the throttle a crack. Before i could walk away for 45 seconds.
    #26
  7. JSEARS

    JSEARS Armed Adventurer

    Joined:
    May 10, 2008
    Oddometer:
    324
    Location:
    Marysville CA
    Man, you guys make me want to go get a big 2 smoke. I always thought the modern day jap 250s were a kick in the pants, id love to try a ktm 300 380 or jap 500. The only time i ever spent on a 2 smoke was my YZ125 which i got when i was 14 years old and still have to this day.
    #27
  8. Taurkon

    Taurkon Long timer

    Joined:
    Aug 9, 2007
    Oddometer:
    1,189
    Location:
    Calgary, Ab
    Kinda reviving this thread as I happened upon an opportunity to pick up one of these babies.

    The scoop:

    01' KTM 380 with low hours. He races bikes, and this was a bike that landed on his lap from sponsors but was rarely used.

    Price: $1500 CDN

    Why? Has 9 or so bikes and they just keep piling up. Needs to clean out a bunch of them and is selling a couple to friends for cheap as he cannot be bothered to sell em and deal with that BS himself.

    Questions:

    Good price? (Almost a duh question I believe, but have not purchased dirt bikes for 15 years. I use to race MX)

    Reliability? Are these like the 2 stroke race bikes where top ends need to be rebuild frequently?

    Parts? Are parts still accessable for these bikes?

    Feedback appreciated!
    #28
  9. CodyY

    CodyY ADVenture Capitalist

    Joined:
    Jun 19, 2006
    Oddometer:
    9,588
    Location:
    Fort Worth, TX
    Buy it.

    You'll only need a set of rings every year or two (if you ride it alot). Just watch the compression and you'll be fine.

    It's great for us bigger boys.
    #29
  10. LILBIT

    LILBIT Ride you must.

    Joined:
    Oct 17, 2007
    Oddometer:
    1,675
    Location:
    Lake Placid, FL
    Top end is good for most folks to 100 hrs. Many run WAY more. Some just rering and go again. I'd check the power valve to piston clearance. I had my 300 and 380 start rubbing the piston as the orings wore well before the rest of the top end needed anything. If set to factory spec i'd have to grind on the PV flapper. It's worth the effort for even more bottom end torque. Pretty comman for older engines to suck a little air through the crankcase gasket. There's a thin spot on the gasket which starts it. Easy fix but makes jetting impossible until done.

    I had to have the head cut and lower the compression to get the jetting perfect but it was perfect! With streetable gearing i could tap the clutch and snap up 4th gear wheelies. It'd run all rpm ranges clean but stock it drove me crazy.

    Crank bearings and seals are KTM only and a litttle pricey. No aftermarket for the bottom end but there is for the piston and rings. Great engine to work on. You don't even need a puller to split the cases. Just a rubber mallet.
    #30
  11. Learn2turn

    Learn2turn WORK AND PLAY DUALSPORTER

    Joined:
    Dec 12, 2007
    Oddometer:
    720
    Location:
    RIO RANCHO
    I found one and read up on 'em.
    Now I'm SCARED AS HELL about the crank and piston cost!
    PLEASE HELP guys...

    How are these bikes holding up for you? Any bottom end issues?
    Any easy way to quell my trepidation without pulling the engine apart?
    I'm guessing no and I don't want a $1700 paperwieght surprise.
    Thanx a ton fella's.
    #31
  12. LILBIT

    LILBIT Ride you must.

    Joined:
    Oct 17, 2007
    Oddometer:
    1,675
    Location:
    Lake Placid, FL
    Worst case won't cost $1700. A crank can be rebuilt for $300 plus a rod kit last i checked. Mains aren't that much just more than aftermarket. Wiesco piston is about the same as any two piston bike. Check Munn Racings web site for actual cost.

    Used engines still pop up. $700ish is typical.

    It's a '99 dirt bike. Some risk is expected.
    #32
  13. BikePilot

    BikePilot Long timer

    Joined:
    Jul 5, 2005
    Oddometer:
    11,260
    Location:
    Tampa
    Re spooge, that mostly has to do with how the bike is ridden. If its ridden slowly it'll spooge, as will most any competition oriented two stroke - they just don't get hot enough (EGT's not coolant temps) to really burn very cleanly at low power settings. Ride as it was meant to be ridden and there'll be no spooge.
    #33
  14. cyberdos

    cyberdos Easy Bonus Loop

    Joined:
    Sep 2, 2005
    Oddometer:
    34,483
    Location:
    Queen Creek, AZ
    Bump.

    So where can I find info on this bike? I have the engine manual but can't seem to find it for the suspension. Just need to know what type of oil and height for the forks.
    #34
  15. Rogue_Ryder

    Rogue_Ryder

    Joined:
    Dec 8, 2005
    Oddometer:
    7,948
    Location:
    Pinewood Springs, Colorado
    I found one for $1900 a 2002 but it's 3hrs away. If I bring a compression tester what's a good reading? (Ball park)

    Crank issues make me nervous but until you rebuild the top end there's not really anyway to tell. The bike looks clean in pics, but I've seen some dirtbikes look good in pics only to see 'em in person and they looked like they were thrown off a cliff then drug behind a truck for miles.
    #35
  16. Trailrider58

    Trailrider58 Oldnlazy

    Joined:
    Jul 5, 2009
    Oddometer:
    33
    Location:
    Cypress, TX
    Know this thread is about dead, but just found it and wanted to add my 2 cents. I'm pre-apologizing for the rambling, but will address things as they come to mind. I have the 1998 380SX model. In short, it's the most fun bike I've ever been on :clap- and I have ridden a CR500 briefly. Yes, it spits spooge all down the pipe, and I still have some jetting or carb issues that need to be worked out. It most likely could use a carb rebuild, but then again sometimes it runs perfectly depending on outdoor temps and the fuel/oil mix. So I will mess around some more with the pre-mix ratio before tearing into the carb.

    Modifications are an FMF silencer with spark arrestor (previous owner looped it out one too many times and broke the rear fender and muffler off it), and the center stand for the EX model. I'm still running the original jetting, but did move the clip position to the recommended slot based on FMF's website for this bike and silencer. Initially that worked wonders - thank you FMF.

    I am a mid-50s mostly trail and adventure rider, 5'9" with a bad back, and could not start it without standing on a MX bike stand. The compression is impressive, and this center stand was the best $100 bike mod I've ever spent. Just ease the kicker past the piston's to dead center and then give it a big ol' whomp. When cold it starts in 4-6 kicks, and when warm in 1-2 kicks. Be careful; before I learned the starting technique, I tore the sole on a tennis shoe and a hiking boot. The kickback can sprain one's knee; so learn this starting routine and all is OK.

    At any given MX track, I am probably the slowest adult rider present that day. But, I am probably aboard one of the fastest bike at this same time. Cannot tell you how many times modern 450s have blown over my head on the jumps (remember I'm old), but then I was able to catch them again down the long straigtaway. Nothing wrong with the 380, just its rider is so far past his prime that he cannot remember what the word "prime" means.

    Mechanical issues to date have been a worn out water pump seal, and broken teeth off the clutch hub back and the related gears. Replacement parts were ordered from KTM World's website. They offer good service and advice, and much better pricing than my local KTM shops. I have had zero problems buying replacement parts for this 14 year old bike from them. Sometimes it took nearly two weeks for the various parts to arrive from Austria, but for the price savings I'm OK with this.

    Roll on wheelies are common in 4th gear. I have occassionally hit a roll-on even in 5th with no clutch help at all. Nail it in 1st gear, and she is coming over on top of you in a heartbeat. 2nd is also dangerous. In 3rd gear, if you are anywhere near the power band the front end will be pointing to the sky when you turn the wrist.:D It has light switch power and is just incredible fun. My son once derided my MX skills by saying, "all you ever do is throw a dirt roost and pull wheelies".

    I will close by badly plagarizing someone else's comment about the 380SX version. He said "It is in enigma. On any given track day, you will lay down both your fastest lap time and your slowest lap. You will turn in ever decreasing times until you do something on the bike that absolutely scares the crap out of you. Then you will turn in your slowest lap time while getting over the jitters." :eek1

    As I age and my MX track days are coming to a close, I am considering turning it into a supermotard bike. Not sure how feasible it is, but it makes for a heck of an idea. Hope someone enjoyed this rant. If you find one and have the chump change to do so, BUY IT! If you've ridden one, you understand. If you haven't, I can't explain it.
    #36
  17. mugget

    mugget n00b

    Joined:
    Nov 12, 2011
    Oddometer:
    4
    Location:
    BrisVegas, Australia
    Good info in this thread! I have bought a 1998 model 380 so I'm keen to start learning more about the bike myself. Don't have it in my garage yet, taking a little 48hr return drive next week to pick it up... the things you do for a little 2T buzz, eh? :D

    Trailrider58 - very nice writeup! :clap
    Interesting that you mention supermoto... I sure hope it is feasible, because that is exactly what I am going to do! I haven't made any posts about that here, but I most likely will put up a build thread on SupermotoJunkie and KTMtalk (in addition to the discussion that's already underway on my local supermoto forum). Your description sure sounds promising, the 380 should provide just the 2T hit that I want!
    #37
  18. Aquanout

    Aquanout Hooliganantic

    Joined:
    Nov 9, 2009
    Oddometer:
    748
    Location:
    Soggy Seattle
    Bump, I picked one up for 1500. I needed a smaller bike, so I grabbed this one with a big bore kit. I think it's a 410 or something like that. Has a gnarly pipe, billet triple, bigger tank, and worked over suspension. This thing is sketchy fast, have to watch it, wheelies in first four. I friggin love it, takes all the stress out of riding. Oh, it was replacing a 950. :D
    #38
  19. Trailrider58

    Trailrider58 Oldnlazy

    Joined:
    Jul 5, 2009
    Oddometer:
    33
    Location:
    Cypress, TX
    Haven't been to this blog in awhile. 410cc - sounds even way cooler than the stocker. I just finished replacing the crank seals (both sides) on mine. Seems all is fine now. Wasn't too hard to do, and wasn't that expensive to do.

    Last time at the MX track, the bike started revving to the moon even with no throttle. Read reports where that is a sure sign of air getting sucked into the left side (stator side seal). Went on and changed out the right side seal on the clutch side too. Thought it was smoking more than it should even though I had recently gone back to 50/1 mix ratio as the owner manual says.

    So far, 3-4 different days of just running it up and down the street seem to have it cured. Won't know until I can get it out for several hard hours at the trails or track.

    Still love these old bikes. 4th gear roll on wheelies trip my trigger every time.
    #39