NX250 Thread -- official ADV owners manual

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

  1. fikse

    fikse All-season-rider

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    Haha!
  2. scrambler66

    scrambler66 Been here awhile

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    No kidding? I reeeeeally love the trad blue metallic :clap oh well, I guess the grass is just greener.... but I found a solution by buying a AX1 - NX250, the Japanese luxury version. Right now it’s still painted in a gruesome yellow, but hopefully in the not too far away future it will look like this specimen below

    [​IMG]
  3. thirstybuck

    thirstybuck Adventurer

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    In every case I've read about, the cam chain has never been at fault. It has always been related to the tensioner. Evidently it is similar to designed used in the Honda Fireblade/CBR 9xx (?) and it is standard practice for owners of these bikes to swap out the automatic tensioners for manual ones. My own bike fell prey to this and I now run a manual tensioner. No more noise and no more worries. If you've got rattles or it sounds like marbles going through a popcorn machine then you need to get a manual tensioner. I believe that the automatic tensioner is not able to extend as far as it should as the combination of pressure from the cam chain guide and the vibrations from the engine run the tensioner back in. If I start up my bike with the tensioner adjusted but with the jam nut loose it loosens the screw VERY quickly.
  4. kojack

    kojack Stay adventurous my friends!

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    Sorry not for trade. she's awesome.

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  5. fiep

    fiep Long timer

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    does anyone here know if NX125 parts (exept engine, of ourse)
    interchange with NX250?

    thanks
  6. legends117

    legends117 Adventurer

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    I love the dual headlights. I don't suppose that front will interchange with the Nx, will it?
  7. scrambler66

    scrambler66 Been here awhile

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    It will, given that you change the fairing, too. The fairing of the AX1 fits plugandplay, actually AX1 and NX250 are in Honda terminology the same model (MD21) with only very few differences. The AX1 was never imported to the US, whereas a few containers had been unofficially sold in Greece, Russia and the UK. That’s where I got my AX1. There are even aftermarket AX1 fairings http://www.perfect-fairings.com/servlet/the-268/honda-AX-dsh-1-FAIRINGS-KIT/Detail

    The bracket of the headlights is available at CMS http://www.cmsnl.com/products/brkt-front-fairin_64510kw3000/

    As is the complete headlight http://www.cmsnl.com/products/light-assy-head_33100kw3003/

    You can check the OEM part numbers at this site http://www.moto4.ru/fiches/honda_nx250_ax1/

    So theoretically it would be possible to convert a AX1 to a NX250 – but it’s way too expensive - not even I would be so mad :rofl
  8. Jacl-Kampuchea

    Jacl-Kampuchea Booze Merchant

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    Today I pulled the tank and the rocker covers from my bike.

    Camchain in perfect condition, gears perfect, cams not scored.

    Had to work then. Going to get the head off before work tomorrow. . .

    If I'm VERY lucky I may get away with Piston/Ring set and new Valves, Shims and Seats combined with a hone.

    Also noticed my CDI was repaired in the past, It's never given me trouble so must have been a tidy repair.
  9. kojack

    kojack Stay adventurous my friends!

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    I am that mad to swap out to the ax1 front end. I will be doing it if the wife wants the nixer
  10. legends117

    legends117 Adventurer

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    Obviously you have considered the option....I like the way you think :clap. But, it is still cheaper to change the bits and pieces than import an AX1 into the USA...plus, I like the wire wheels of the NX better. Maybe if I could find the parts used...off a scrapped AX, it would be more economical...I will have to look for an international eBay site or something, eh? Any recommendations?
  11. Honda Scoot

    Honda Scoot Time To Ride

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    A timely question as we just completely went through a 1988 NX125. Still not quite done, as it is missing the front sprocket cover and parts that were missed from the first order to Service Honda.

    http://advrider.com/forums/showthread.php?t=731237&page=18

    The NX250 and NX125 are VERY different bikes.

    Items that are shared:
    Front and rear reflectors - I still need the fronts and the little stems to mount them
    Tail light lens
    Front Turn Signals - The rears have looooong mounting stems
    Mirrors - NX125s are cheaper as the rubber vibration mounts are not included
    Handle Bars are both 7/8" diameter

    Not much is the same.
  12. fiep

    fiep Long timer

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    OK, thanks
    guess I will not buy the NX125 that just popped up on CL
  13. valvecrusher

    valvecrusher tractus pro pensio™

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    The NX125 shares the rear fender assembly, iirc..just the plastic and the lights.

    the nx125 is the xl185/xr200/ type air cooled motor.
  14. scrambler66

    scrambler66 Been here awhile

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    That thought crossed my mind :D. I was looking for years for used AX1 parts at eBay, and was almost ready to buy new parts before I got a complete AX1. Just a few weeks later a complete fairing showed up at eBay (wouldn’t you know it) and I bought it anyway, since the one of my AX1 was in really bad shape.

    There must be lots of AX1 parts in Russia (the parts list above is from a Russian parts vendor) but since its Cyrillic, I have no idea how to look for them at eBay.

    If you got a decent Honda dealer, take the OEM part number and ask him if he willing to order them.

    There is one vendor who organizes Japanese Yahoo auctions, but it’s too expensive, too – don´t get fooled by the prices, you have to multiply them by three until they are shipped to Europe http://auctions.isibike.com/?catId=0&freeWord=AX-1

    From time to time a complete AX1 showed up at Ebay UK, they are not even that expensive – 800-1200 £ - looks like I could make a living by buying a container load full of them and ship them to the US?

    At least you could take a pair of those headlights with 3.5" diameter - same as the AX1. I´m forced by the dang German TÜV to use them, too, since the original AX1 lights are not DOT approved http://www.ebay.de/itm/FROG-EYE-DOU...19?pt=UK_Motorcycle_Parts&hash=item416efbb8b3

    There is a very nice site of a Greek guy who totally rebuild his AX1. I do not take any responsibility if you visit this site – you will probably get totally hooked to the AX1 http://dhost.info/ax1/html/the_rebuild.html

    And if that happens, you could buy an AX1 directly from Japan http://motorcycle.goobike.com/motorcycle/bike/stock_8700210B30121108002/


    This one looks really nice and shiny, I wonder if the price of 5,800$ already includes shipping - by the way, did I mention that the AX1 musters 3 ponies more than the NX250 :evil ?

    [​IMG]
  15. Jacl-Kampuchea

    Jacl-Kampuchea Booze Merchant

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    That is waay too much for an AX-1. I could buy one from Japan ( direct from a container ), register it in my name for under $2000, drive it to Bangkok and have it flown to Europe for around $600/700.

    Hell, I could buy a good one here from $800 to $1500.

    There's a good reason the stock AX-1 lamps are not DOT approved - they suck. I fitted two HID kits to mine lately and it's easily 300% better.

    One lamp is rigged with a HID for low beam, and the other for high beam. When one is on the other is off unless I use the passing button and then both are on as long as I keep the button pressed.
  16. larry31

    larry31 Back Roads Explorer

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    Here's wishing you all Seasons Greetings. What ever your traditions are for this time of year.
    [​IMG]

    All ride safe and the best for the New Year.

    Larry31
  17. Jacl-Kampuchea

    Jacl-Kampuchea Booze Merchant

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    Whaddya Know!

    My engine is fine:clap

    Valves perfect, piston and rings perfect and cylinder completely unscored. Looks like brand new, in fact:1drink

    Can anybody guess what the problem was?

    I'll post a video of the head, piston and the problem item that made me think the engine had gone "boom".

    Merry whatever it is to you all, by the way.:freaky
  18. Jacl-Kampuchea

    Jacl-Kampuchea Booze Merchant

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    Perfect!

    <iframe width="560" height="315" src="http://www.youtube.com/embed/jV5E7PxfuJI" frameborder="0" allowfullscreen></iframe>

    Starter Clutch shat itself, making the horrible sounds and I feared the worst.
  19. scrambler66

    scrambler66 Been here awhile

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    Good to hear that your Nixie is all right. Every report of destroyed engines challenges my strong belief, that the NX250 is indestructible (well, some guys are able to manage even this).
    Problemes with the starter motor are unusual, too (let&#8217;s say it was the stupid previous owner fault) - I know a few cases with bad roller bearings of the starter motor. What part exactly screwed up? Pictures would be good :clap


    [​IMG]

    [​IMG]


    btw. Honda is not selling the roller bearings separately, so you would have to buy a new starter motor
  20. Jacl-Kampuchea

    Jacl-Kampuchea Booze Merchant

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    [​IMG]

    Piston looking good.

    My mechanic gave the cylinder a tiny hone, here it is before cleaning after the hone:

    [​IMG]

    The head: Valves in good shape. Some ever so light scoring on cam journals, but not bad enough to worry about:

    [​IMG]

    Below is the part that failed, post repair.

    [​IMG]

    At some point in the bike's life the bearings on the top had failed and Khmer mechanics had welded on a similar item from a car - a common fix here.

    This type of repair never lasts too long because the car item is not designed for motorcycle engines compression. Also, it was missing two thrust washers which can be seen in the picture below of the repaired item and the old, busted roller bearing set from the car.

    [​IMG]

    Should b back on the road tomorrow running as well as ever.