NX250 Thread -- official ADV owners manual

Discussion in 'Thumpers' started by valvecrusher, Mar 17, 2008.

  1. Orkodelamuerte

    Orkodelamuerte Adventurer

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    This is what you are looking for: NX 150 - Made in Brazil.. it shares almost everything with the NX 125 except for the cylinder and the rear fender stuff..

    http://www.youtube.com/watch?v=nL5983DBHTY
  2. scrambler66

    scrambler66 Been here awhile

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    Talking of Brazil – have you ever considered parts from the XRE300? The engine is almost identical to the NX250 and it’s also manufactured in Brazil, so parts may be easier to get in Argentina :clap. You would need a parts list of the XRE to check which engine parts actually fit.

    [​IMG]
  3. Orkodelamuerte

    Orkodelamuerte Adventurer

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    This is what I use for my NX 250 in argentina:

    XR 250 - Tornado
    [​IMG]


    CBX 250 - Twister:
    [​IMG]
  4. Dirtstar1

    Dirtstar1 Human torpedo

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    Hi guys. I know this isn't a 250, but just in case one of you wanted a bigger bike to complete your nx collection, where it is!

    http://sandiego.craigslist.org/ssd/mcy/3507092461.html


    <a href="http://s29.photobucket.com/albums/c285/dirtstar1/?action=view&current=240293DD-5472-4567-8175-B08BDED07FAC-1017-000000A1CBA5FF2A.jpg" target="_blank"><img src="http://i29.photobucket.com/albums/c285/dirtstar1/240293DD-5472-4567-8175-B08BDED07FAC-1017-000000A1CBA5FF2A.jpg" border="0" alt="Photobucket Pictures, Images and Photos" /></a>

    <a href="http://s29.photobucket.com/albums/c285/dirtstar1/?action=view&current=26D00A5A-1DA3-425D-9B19-E88E4BE19C26-1017-000000A1E0198528.jpg" target="_blank"><img src="http://i29.photobucket.com/albums/c285/dirtstar1/26D00A5A-1DA3-425D-9B19-E88E4BE19C26-1017-000000A1E0198528.jpg" border="0" alt="Photobucket Pictures, Images and Photos" /></a>
  5. scrambler66

    scrambler66 Been here awhile

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    Very nice and clean Dommie, I especially like the XR600 stainless steel manifolds:clap


    @ all

    As I learned from this forum, KLR footpegs should fit our Nixies - MSR footpegs are available with 13mm offset for enhanced shifter area. Which would be neat for anyone with a shoe size larger than 7 :D

    Unfortunately, for a try those pegs are fairly expensive if ordered from Europe, so I was wondering if anybody already tried them – or would like to :D

    [​IMG]
  6. Dirtstar1

    Dirtstar1 Human torpedo

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    @scrambler66, do you think that honda grabbed that header off the shelf for that? Under the bike it's duals all the way back. Stock un altered. Thanks for the complement. As far as foot pegs are concerned, I used crf 50 pegs. They cost about $35 on eBay in any color and near any alloy.
  7. Jacl-Kampuchea

    Jacl-Kampuchea Booze Merchant

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    Bugger,

    Decided to throw a new camchain into the bike while it was open, tensioner was fine.

    Got the head back on and we went to adjust the valves to discover one exhaust valve was beyond adjustment. It was also Taiwanese shit and not OEM.

    Head back off, new OEM oil seals x 4, Hot Cam shims , 2 OEM Exhaust valves and a big clean up or the inlet valves. This crap's getting expensive:deal
  8. Orkodelamuerte

    Orkodelamuerte Adventurer

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    This is what happens... Now that I finally got my bike back and runing, I'm having a new issue.

    As soon as the engine gets hot enough to start the fan, I get short on spark, The engine will start failing and would not cease until I let it cool down a little.. If I go quiet and below 5k revs, then nothing but perfection happens.

    Another thing that I noticed is that when that happens or is about to happen (the spark issue) the tach will go crazy, showing 3k revs when Im pretty sure I'm going 1.5k.. but dont know if related...

    My final thought was that my CDI is bad... what do u say?

    pd.: engine and carb are more than perfect... so dont focus on that.. My alternator has been repaired 1 month ago, and regulator is brand new.
  9. Jacl-Kampuchea

    Jacl-Kampuchea Booze Merchant

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    Does not not sound like CDI to me, though it's possible.

    Certain that it's losing spark? Or is that just your impression?
  10. Orkodelamuerte

    Orkodelamuerte Adventurer

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    Yep. Out of nowhere, I get gas, air but no spark. I get ramdom explotions, and if i quit forcing the throttle, engine will stop. same as when you run out of gas.

    It feels as if when engine is hot, the CDI pulse will not catch up with the revs, so it fails to get a continuous spark..

    :ear
  11. legends117

    legends117 Adventurer

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    I started working on my newly acquired NX250, and noticed my tool kit doesn't include a spark plug socket. Can you tell me if I need a special Honda plug socket, or can I use a standard socket? Thanks. - JD
  12. Jacl-Kampuchea

    Jacl-Kampuchea Booze Merchant

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    Id try a known good coil and rectifier before looking at the CDI. Start with the smaller, more likely issues.

    Also, a bunch of people on here have listed as trick a for checking whether the CDI is faulty or not - "turn on the ignition and if the tach moves then it's probably not the CDI"

    This is NOT correct at all. Myself and a few friends had a play around with broken CDI'S, working CDI'S and bikes with the CDI's taken out. Tach jumped every time.
  13. Orkodelamuerte

    Orkodelamuerte Adventurer

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    By rectifier you mean this?
    [​IMG]

    Coz if that's it, its a brand new one. I've seen that test for the CDI performed with the tach.. My tach moves when I turn the ignition, that proves (i believe) it works, but does not prove it doesn't fail. Plus, I must restate that my tach goes crazy when my bike is hot (that didn't come out right huh?!!)

    Seriously, so I will try to check on the coil as u said.. any idea how to know if the rectifier (that thing on the picture above) is good?
  14. Orkodelamuerte

    Orkodelamuerte Adventurer

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    While observing the coil with my monkey face for a while, I noticed I have a spark plug thats not what I am supposed to have on this bike.. I´m currently using an NGK CPR8EA-9, but according to the manual, I should be using NGK CR9EH9.

    The question is, Can that single detail be the cause of my problem?

    I´m soooo buying this spark plug first thing tomorrow... :ear

  15. Dirtstar1

    Dirtstar1 Human torpedo

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    Hey guys, I took the NX250 to the supermoto track today and had an awesome time. I managed to pass some people, lol but mostly held my own against the modern bike showdown. Lots of Ktms, crf450's, yz450's and a few wr250x's. let me tell ya, the drz400's were really surprised when I passed them. All on dot trailwings! Ok ok I did low side twice today, but no harm was done to the rarest plastic on the planet.

    <a href="http://s29.photobucket.com/albums/c285/dirtstar1/?action=view&current=54513466-8CDB-4688-8D36-70BF9B373A6A-1525-000001CAA7F8F680.jpg" target="_blank"><img src="http://i29.photobucket.com/albums/c285/dirtstar1/54513466-8CDB-4688-8D36-70BF9B373A6A-1525-000001CAA7F8F680.jpg" border="0" alt="Photobucket Pictures, Images and Photos" /></a>

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  16. scrambler66

    scrambler66 Been here awhile

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    Ok, I got two points: first, there are multiple symptoms a bad CDI could cause &#8211; as mine failed, the Nixie always didn`t start at first, but after wiggling a bit at the CDI wiring it finally started and the engine was running without any other problems. But I heard from many NX650 drivers (with almost identical CDI) that there are other possible symptoms, one of them is failing of the tacho. And since I&#8217;m a follower of Occam&#8217;s razor, I guess it&#8217;s actually the CDI (there is no side stand switch and I rarely heard of other electrical component failing).

    But secondly, it&#8217;s a bit disturbing that you mention the fan. Sounds like the fan starts abundantly? This is rather unusual, it rarely happens with mine and nether at higher speeds. Only when I have to wait for some time in front of a traffic light, or with low off-road pace the fan sets in. So it might as well be an overheating problem (wrong spark plug?)
  17. fikse

    fikse All-season-rider

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    Orkodelamuerte: Get yourself a new plug. I dont know if there are difference for the plugs you mention, but correct plug is essential :-)

    Dirtstar1: Fantastic pictures! And stories... ;-) Keep them coming :clap
  18. Dirtstar1

    Dirtstar1 Human torpedo

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    Full throttle powersports is having a dyno contest. Free to enter do I had them run the nx! Are you ready? 19hp! Lol totally stock with a new cdi box. All on stock gearing and oe tires.

    <a href="http://s29.photobucket.com/albums/c285/dirtstar1/?action=view&current=8FA85503-6375-4B01-ADDD-1F0CCFD574E5-1997-000002D225377BFC.jpg" target="_blank"><img src="http://i29.photobucket.com/albums/c285/dirtstar1/8FA85503-6375-4B01-ADDD-1F0CCFD574E5-1997-000002D225377BFC.jpg" border="0" alt="Photobucket Pictures, Images and Photos" /></a>
  19. Orkodelamuerte

    Orkodelamuerte Adventurer

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    Ok, I replaced the spark plug for the correct one. I must say that there has been a noticeable diference regarding the engine performance and heat control...

    I read somewhere that depending on the temperature rate (or sth like that) of the plug, the heat will dissipate easier and therefore, performance improves in many ways...

    Those many ways, are true, but still didnt solve my particular issue,,. when some real heat kicks in, spark fails..

    It took longer to get the bike hot, but the problem is still there.

    I did notice one more thing.. when I turn on the ignition switch (green light for Neutral), the CDI box makes a very quiet but high pitched sound, It goes off as soon as I turn the key to off. Dont know if thats normal, so would any of you be so kind to listen to your bike?

    You dont have to put the bike apart; just get your ear close to the fuel tank and pay attention as you turn the key to ignition..

    Thanks You all!

    PD; Happy New year!!!!!!!!!!!!!!!!!!!!!!!!
  20. Honda Scoot

    Honda Scoot Time To Ride

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    Valvecrusher & Tntmo

    Front sprocket cover is on ebay.

    http://www.ebay.com/itm/Honda-NX250-NX-250-Front-Sprocket-Cover-1988-1989-1990-/150972753822?pt=Motorcycles_Parts_Accessories&hash=item2326ad679e&vxp=mtr