Any Honda Dominator NX650 owners out there ?

Discussion in 'Thumpers' started by KeithDommirider, Jul 31, 2007.

  1. dstriffler

    dstriffler Been here awhile

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    There was a good post on anti vibration handlebar risers on here a while back. I looked through and couldn't find it, but there was a great picture of the risers, and a lengthy discussion on the subject. I don't think the risers were the same as the ones just posted in the link.
  2. Seppo

    Seppo Been here awhile

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    thank you for the friendly welcome to this madness!

    george, i thingk i will try the DIY method like in the picture. i wanted to lower them but that will have to wait. do you know where i can get this bikemaster risers here in europe?

    dstriffler, maybe the anti vibrating handlebars are the rox risers? i think they say they minimize vibration.

    another (stupid) question, the NX has 22mm handlebars standart, right?
  3. Dominatoras

    Dominatoras Adventurer

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    yes,NX has 22mm handlebars.i bought adjustable risers in a local store for 20-25 euros.they are quiet cheap because they've been made in Taiwan(if i remember well),but they have good quality.for order in Europe check this similar product http://www.wemoto.com/parts/picture/ms-guireh/ or search in Ebay.i think WRP also have similar risers in their catalog
  4. Carlossal

    Carlossal Professional dreamer

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    My wife's '93 NX650 has about 130,000 k's on it and has never had any major work done on the engine. Serviced religiously for the first 100k until we got it and then fairly regularly since then.

    It always used a bit of oil, but recently has been using quite a bit more, as well as being kinda hard to start. Once it just stopped on the highway (I suspect she was going a bit fast) but after a few minutes of swearing and kicking it went ok again.

    More recently she was trying to overtake someone and the engine just died and wouldn't start again. Very dangerous! I pulled the plug on the side of the road, and there was a fair bit of white residue. Spare plug went in but it didn't help.

    When I turned it over there was a nasty clicking noise every revolution.

    Brought it home and checked valve clearances (had been meaning to do it for ages but it's such a PITA) and they were pretty tight, loosened them up to spec and this got rid of the nasty clicking noise (yay!). Checked to make sure we had spark...

    ... but it still won't start. Now I was a bit sceptical as I checked the valve clearances because the resistance as I turned the crankshaft didn't feel like it happened at the right time.

    Is it likely that the cam chain has jumped a tooth or two? Maybe it jumped one last time it stopped on the side of the road so the timing had been a bit out, and another tooth this time so now it just won't go?

    Now I'm writing this I feel a bit stupid cos the valves are fully shut when the timing mark hits "T" - but I guess that could just mean it jumped a tooth on the crank end and not the camshaft end? (edit... valves seemed to open too soon after the "T" - ie when I'd expect the piston to be going down)

    Does anyone have any advice - apart from, buy a new bike or get someone nice to rebuild the top end?
  5. Bounder

    Bounder ExternallyDisplaced

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    Are you getting spark? CDI units pack up on these, mine did and I haven't half the mileage that yours has.
    I'd check that you are getting spark before ripping the cam chain.
  6. rabbitears

    rabbitears Been here awhile

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    Does anyone have any Dominator-specific advice on how to set the fuel/air ratio screw?

    I've just had a new CDI put in which seems to have fixed the not-starting and not running problem (yay!). The bike runs fine when in gear and moving, but when it's idling...it'll idle perfectly healthily at about 1500 rpms...until it quietly and undramatically stalls. It sounds like it's getting bogged, as there are also very minor pops (backfires) in the exhaust upon restarting. And then it restarts perfectly fine - just VERY inconvenient when you're at the head of a line of traffic.

    I seem to have reduced this problem by frantically messing around with the fuel/air ratio screw, but it's still stalling after 90-120 seconds of idling.

    Any clues/suggestions? It'll be next week before I can see a decent/trusted bike mechanic...
  7. Bounder

    Bounder ExternallyDisplaced

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    Have you done the carb mods ?
    Air screw is listed as being 2.25 turns out from bottomed.
  8. Pasoren

    Pasoren Adventurer

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    I've read that the carb mods are not very good with stock exhaust system/air filter??

    Comments?
  9. Bounder

    Bounder ExternallyDisplaced

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    I can't comment, I have never had a stock exhaust. Mine came with a Supertrapp /9Disc I cut the snorkel off and fitted a BMC air filter as well.
    Since I did the Carb mods its run really well.
    One thing to note is that these bikes are jetted incredibly lean from the factory for Emissions.
  10. Skapegoat

    Skapegoat Adventurer

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    Check that the carb pumper arm on the right hand side of the carb is moving freely and returning properly.
    You can see it working off the throttle housing like its using it as a cam.
    If they seize open they can cause what you are describing.
  11. rabbitears

    rabbitears Been here awhile

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    Thanks for the advice guys.

    I haven't done the carb mods, although I notice that my screw doesn't have tabs and it doesn't look like they've been ground off. Given that it's a 20 year old bike now, the whole carb might well have been replaced at some point before I bought it.
  12. Bounder

    Bounder ExternallyDisplaced

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    Depends where in the world you are?
    Different countries, different carbs.
  13. rabbitears

    rabbitears Been here awhile

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    Ahh, I didn't know or think about that - I would have assumed that Honda just installed the same OEM carbs on all bikes at the factory. (I'm in Australia).
  14. Skapegoat

    Skapegoat Adventurer

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    Have you any pictures of the carb?
  15. muddyrabbit

    muddyrabbit Lost Boy

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    new owner checking in. I just put a deposit down on an 88 NX650 with 12,000 miles that will be the wife's bike. She has a WR250R now but it gets a bit wrung out on long trips keeping up with bigger bikes. looked at all kinds of options including V-Stroms and KLR, but kept coming back to the NX650. Plus we always wanted one in the stable.

    First order of business will be getting it lowered for her. I intend to go through the suspension and do it properly, but we need a quick solution so she can ride it home from 8 hours away. Is there a lowering link available for this bike?
  16. LdoubleJ

    LdoubleJ n00b

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    Welcome muddyrabit.

    A quick solution would be to adjust the suspension front and rear:

    Front: Loosen the clamps that hold the yokes and lower the front end (push the yokes a distance up through the clamps) Maybe you can lower the front 2 inches that way.

    Rear: Loosen the spring preload with a c-spanner. The nut may be secured with a hex-screw. Don't be to greedy when lowering....


    :-) Lars
  17. muddyrabbit

    muddyrabbit Lost Boy

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    I guess I could have been more specific. we are well versed in doing lowering for short riders, from minor/easy stuff like slide the forks up all the way to custom set ups done with internal spacers in the shock and forks. This won't be the first tall bike we have set up for her either. her current ride is a WR250R that had to be lowered nearly 3" before she could get the ball of 1 foot down. As short as she is softening the preload and sliding the forks is unlikely to get an NX low enough for her to touch, but possibly enough to ride it home on the highway at least. As I understand all the NXs came with a sealed shock, correct? Which is not impossible to rebuild, but more expensive. so in the long run I will be looking to swap in something that is rebuildable so we can shorten the stroke appropriately to set the height for her. With the bike 8 hours away though doing the shock before we procure the bike is not what I want to do. I'd rather have the bike in the shop to take proper measurements before we make major shock decisions. I was hoping there was a lowering link available even if I had to import it, but I can't find one. It does look like a custom lower U shackle on the shock is possible, with the bolt hole higher up, but again the bike is 8 hours away. Has anyone found a shorter shock that is an easy swap?
  18. Newcastle Rookie

    Newcastle Rookie n00b

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    Hey guys just looking at getting a Dominator,

    Wondering how much an Acerbis tank goes for in Australia theses days? From what I've read they are quite rare and expensive.
  19. FLICKIT

    FLICKIT Been here awhile

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    Contact these guys, it's been mentioned elsewhere that they'll be getting more in at some stage:
    http://www.mx1australia.com.au/index.php/products/keywords/hondatanks
  20. CNRED

    CNRED It'll be OK

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    They are pretty close to impossable to find in the USA. I contacted Acerbis about 2 years ago concerning a new tank, they stated they had none and were not planning on making any. Hopefully they will change their mind. Every once in awhile one will come available on the used market. The last one I saw was in the $500 range.