Yamaha XS 650 Dualsort?

Discussion in 'Old's Cool' started by Oro D, Oct 1, 2007.

  1. 81forest

    81forest ADDRider

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    What a fantastic thread. I just acquired a '77 model from a neighbor. He is moving and doesn't want to drag his dead XS around anymore. Ran when parked, been sitting under his deck for 18 years, complete! The best part about a free bike is the budget I can justify for this project, and this thread has a lot of great ideas for what I'd like to do. I love Baza's attitude of "just put tires on it and ride!" :D

    I'd like to use the stock frame, and add maybe a little more suspension with a 21" wheel. From what I can tell so far, it seems like the easiest/cheapest thing to do is to swap forks and swinger from a DT or MX or XT or??? :ear

    Am I correct that other 35mm forks will mate right up with the stock triple tree? So one could pick up an entire front end from a MX360 and plug and play?

    Here's a pic of the beauty as she sits:
    [​IMG]
  2. hunter_greyghost

    hunter_greyghost XS650 Allroads Traveller

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    Reckon you'll need a complete engine rebuild before anything else, :deal
    been sitting for that length of time would dictate perished seals, camchain runners perished too, stuck piston rings, dodgy bearings, diaphrams in carbys, etc. :cry
    Better off doing a complete build before getting too keen on anything else, works out better if you want a keeper to do some travel on. :wink:
    Then again, I've been known as a fussy old bastard :lol3
    Good luck with whatever you do, & post photos of your progress :clap
    Cheers
    Baza
  3. MightyChosen1

    MightyChosen1 I wanna be sedated

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    I dont know if this qualifies as a dual sport or not but I think it will see its fair share of off pavement rides in the future:

    [​IMG]

    I plan to install some high pipes and beef up the cars suspension in the future to make it a little more offroad friendly.
  4. 81forest

    81forest ADDRider

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    Mightychosen1, that is a beauty. Where did you get that seat? :nod

    Hunter_Greyghost, I see from other XS threads that you are a scholar of these machines. :super. What do you think is a good and comprehensive order-of-importance for my '77's engine rebuild, based on sitting for 18 years? The bike has 33k miles (52k kilometers). I've checked out Mike's XS site and I will be getting the parts and tools to do a top end overhaul. I'd like to replace seals and bearings as a preemptive measure. In your experience, what are the things that I should definitely replace/overhaul/inspect while I'm inside the motor? Your wisdom is greatly appreciated! :freaky
  5. Fred Caen

    Fred Caen Adventurer

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  6. MightyChosen1

    MightyChosen1 I wanna be sedated

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    I wouldnt call it a beauty ,Its more of a mutt.


    Seats off an early Yamaha enduro, Maybe an AT-1 or DT. Bars and shocks are Triumph Scrambler. The rest are parts I had lying around the garage.
  7. hunter_greyghost

    hunter_greyghost XS650 Allroads Traveller

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    OK, after a compliment like that, I guess I'd better step up & give some hints, & remember I'm a 'bush' mechanic from Australia so some my dialogue may seem strange to you! :lol3
    Speedo showing 33mls [52km], I'd be skeptical about whether that is correct, looking at your photo doesn't give good indication either, what history do you have, was the neighbour first or tenth owner? doesn't really matter though - I always look at surgery on a bike as a necessary evil, :ear
    let's assume that you're looking @ doing a decent job on this machine, then we won't talk about budget but what I'd do with this motor, :deal
    Firstly, do your top end rebuild;
    1. all new gaskets & seals
    2. new camchain & guides - guides have rubber which after 18yrs will have become brittle, treat anything with rubber as throw away!
    3. check your tolerances on your pistons/barrels, rebore if necessary
    4. rings definately replace, they could be stuck when you disassemble anyway, if not replace anyway because they will have lost their tension [spring]
    5. Regrind your valves seats, after checking guides for wear
    6. I'd replace the valve springs [may be one or two compressed for eighteen years?], with heavier units from MikesXS [MXS for abreviation purposes], don't forget your valve stem seals will be stuffed too
    7. camshaft bearings [4], I'd replace
    8. camshaft should be OK - maybe surface rust, your call on replace or buff off rust if not to bad
    9. replace the tappet adjuster bolts with hexhead units from MXS
    10. when all of that is back together, replace the points ignition system with either a Pamco [still uses the original mechanical advance/retard, replace the tiny springs in it], or a Boyer Bransdon Micro Computer System, both from MXS, the points system are a pain!

    OK, bottom end, must be time for a coffee!!

    * better get yourself a manual!, Cylmer or Haynes or both!
    Just remembered I've got a staff meeting this morning, it's 0830 on a Monday here so will get back to you this afternoon, wet & shitty day here anyway!

    Cheers
    Baza
  8. rw4x4van

    rw4x4van East Coast Rider

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    <a href="http://smg.photobucket.com/albums/v515/RW4x4van/Photos/?action=view&amp;current=sabs650.jpg" target="_blank"><img src="http://img.photobucket.com/albums/v515/RW4x4van/Photos/sabs650.jpg" border="0" alt="Photobucket"></a>

    <a href="http://smg.photobucket.com/albums/v515/RW4x4van/Photos/?action=view&amp;current=YAM650DualSportc.jpg" target="_blank"><img src="http://img.photobucket.com/albums/v515/RW4x4van/Photos/YAM650DualSportc.jpg" border="0" alt="Photobucket"></a>

    <a href="http://smg.photobucket.com/albums/v515/RW4x4van/Photos/?action=view&amp;current=YAM650YZ750.jpg" target="_blank"><img src="http://img.photobucket.com/albums/v515/RW4x4van/Photos/YAM650YZ750.jpg" border="0" alt="YZ750"></a>

    <a href="http://smg.photobucket.com/albums/v515/RW4x4van/Photos/?action=view&amp;current=YZ650b.jpg" target="_blank"><img src="http://img.photobucket.com/albums/v515/RW4x4van/Photos/YZ650b.jpg" border="0" alt="Yamaha MX XS650"></a>

    <a href="http://smg.photobucket.com/albums/v515/RW4x4van/Photos/?action=view&amp;current=rickmanxs740ek5002.jpg" target="_blank"><img src="http://img.photobucket.com/albums/v515/RW4x4van/Photos/rickmanxs740ek5002.jpg" border="0" alt="Rickman/XS650"></a>

    <a href="http://smg.photobucket.com/albums/v515/RW4x4van/Photos/?action=view&amp;current=Champion_XS650.jpg" target="_blank"><img src="http://img.photobucket.com/albums/v515/RW4x4van/Photos/Champion_XS650.jpg" border="0" alt="Champion_XS650.jpg"></a>
  9. 2manyrides

    2manyrides shifty charactor

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    Get a battery, check the oil and gas. Try to fire it up. What can it hurt?
    Runs like crap? check the points and clean the carbs...
    Nice to know what's up before you take it apart. Then go to town on the bike making it the way you want it to be.
  10. rw4x4van

    rw4x4van East Coast Rider

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    +1 get it running first,....then see what 18 years under the deck did

    ..'77 was my favorite year:clap
  11. 81forest

    81forest ADDRider

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    Thanks for the replies, I'm looking forward to getting started... 22manyrides, love the story and photo of you and your dog. :freaky:trpI will follow your advice and probably try to fire her up with an auxilliary fuel tank and see what happens. The PO did say that he drained the carbs before storage, so it may actually sputter to life.:1drink

    Hunter_Greyghost, thanks for that list, that is exactly the stuff that I had in mind. Mike's XS seems to have everything, I may splurge and get the valve cutting toolkit since the bike was free! Always wanted one of those. Also, the bike has 33 thousand miles.... so the top end stuff is definitely due.

    I need to button up the BMW airhead project that is currently on the bench which may take me awhile, but I will be checking back in when I get started on this XS. Thanks for all the tips! Here are a few more pics of what a free bike looks like:
    [​IMG]
    [​IMG]
    [​IMG]
  12. hunter_greyghost

    hunter_greyghost XS650 Allroads Traveller

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    So that's what they call 'patina'? :eek1
    you gunna learn to respoke your wheels? I've done it but it took many hours of swearing, found a bloke who'd do it for a slab of grog :lol3
    got a bit of a job on your hands, anyway all good experience as my Dad would say :deal
    reminds me that I've got a '74 I must get back to & finish off :rofl
    Cheers
    Baza
  13. 2manyrides

    2manyrides shifty charactor

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    Rotate the motor first with a socket and inspect valve train.

    There's some REAL oxidizing going on with that one!
    You'll get some satisfaction cleaning up each piece and reinstalling.

    Looks to be just about as bad as the candidates I aquired as parts bikes...
    (for my other long term rides)
    Some of the items just had to be sawed off! 20 years of sitting in a outside didn't help anything.

    [​IMG]

    Obviously the motor wouldn't turn over. In fact the combustion chamber was completely jam packed with festering rust. The fins of the jug were still un damaged and something I wanted to save. I was told to heat olive oil and pour it in to free things up. I hit it with a 3lb hammer to no avail. I moved on to the maul. Still not budging after 30 wacks, I finaly got it apart by giving it all I've got. This method woke up the neigbors!

    [​IMG]
  14. hunter_greyghost

    hunter_greyghost XS650 Allroads Traveller

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    Giving it a belt Or whack takes on a whole new meaning with you doesn't it! :lol3
    Cheers
    Baza
  15. hunter_greyghost

    hunter_greyghost XS650 Allroads Traveller

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    Nice, wheels aren't original, should be mags not wires, :huh
    or am I wrong again?, different countries - different wheels? :deal
    [​IMG]
    As you can see, I run whatever wheels as needed, can't get a decent knobby in 16", so I use 18" wire with a Dunlop 606,
    Cheers
    Baza
  16. ThumperStorm

    ThumperStorm Long timer

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    Any updates on fitting the front end?:ear
  17. hunter_greyghost

    hunter_greyghost XS650 Allroads Traveller

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    +1 :deal
    Cheers
    Baza