1978 750 XS Special

Discussion in 'Old's Cool' started by Krantz, Oct 19, 2013.

  1. Krantz

    Krantz OMG aka WTF

    Joined:
    Feb 4, 2013
    Oddometer:
    166
    [​IMG]This happened again.I found another one.And while work on the first one(75/6) has slowed to a crawl, why not entertain myself ,right? So the question is this-does anyone know anything about it?
    I saw it couple month ago on local CL,called the number.Nice gentleman answered-yep,she's been sitting in my yard for a lo-ong time,belongs to my former neigbhour,he moved,time to get it off my hands.So i got in touch with the owner,asked him about p/work. He said-uh- he has to go to lic. bureau to get it.Two month later he calls back,saying he got it and if i still want the bike.So a little while later and hunnerd fifty bucks it's at my place.
    EWERYTHING is stuck.Took the plugs out,they look normal.The engine is not turning by way of kickstarter.I did not forced it. Sprayed DW-40 liberally into cylinders.Let it sit overnight,se what happens.
    So it all depends on what's inside the engine.I can see it with trumpet mufflers and low handlebars,othervise eweryting stock. It is a good looking bike.What say you? How to proseed? What to do?[​IMG]
    #1
  2. Krantz

    Krantz OMG aka WTF

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    [​IMG]I can see old ispection sticker under the seat- dated 1997.In our neck of the woods it means that the bike(or a car) registration not renewed for more than a year requires mechanical inspection.Or i it's been brought from another province.So at some point it was sitting a while. There is 61K km on the clock- about 36k miles.[​IMG]
    #2
  3. NJ-Brett

    NJ-Brett Brett

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    That is a whole lot of work right there!
    #3
  4. Krantz

    Krantz OMG aka WTF

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    Naw, not that much.All depends on the engine.Cosmetic stuff is easy.The question is -is it worth it? To run it- new tires, battery,mufflers, carbs rebuild, new seat.New wires and plugs.Brakes.Petcocks.Aside from the seat its about few hundred.Plus my time.
    Does anyone have one of these?
    They are not rare.But not coming frequently for sale.How is it to ride?
    Oddly it's comfortable to seat on.I like the look of it.Give me couple days, i'll clean it up a little to have an idea if i like it enough to polish.
    #4
  5. concours

    concours WFO for 41 years

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    The stuck engine will need COMPLETE dismantling to inspect and re-bore, replace rusted corroded parts. Plan on $1000 in the engine, or more.
    #5
  6. Krantz

    Krantz OMG aka WTF

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    Just drained the oil.Contaminated by gas- dumbass po left petcocks open.Othervise no shavings,metal pieces or debries.The engine will not turn with kickstart.As much as i can see into the plug holes,no rust. So maybe it is just kickstart gear messed up.[​IMG]
    #6
  7. Ron Bernert

    Ron Bernert hiding in plain sight

    Joined:
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    Location:
    Oxford, Ohio
    Run. Run really, really fast.

    Neat bikes, but the cost of repairing these way exceeds the value of a used, running one in better condition.

    I've had 2, and for a while there were no carb kits (and a few other items) to be found. Do your homework and see if you can get gaskets, rings, etc..

    If you plan to re-do it, best of luck.
    #7
  8. Krantz

    Krantz OMG aka WTF

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    Thanks for the reply.Very confidence inspiring.No plan redoing it.If it runs,i'll be happy.If not,i'll try to find used engine.
    There seem to be loyal following by few dedicated fanatics,but i guess any bike would have that.Quick search shows quite a few online parts stores.I did not check availability,i will try to turn the engine first.

    That's old oil and all the dirt there was there.
    [​IMG]
    #8
  9. Krantz

    Krantz OMG aka WTF

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    Another interestin thing- how the ##$$^*& you put it on the senterstand? There is no grab handle.
    #9
  10. Ron Bernert

    Ron Bernert hiding in plain sight

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    Sorry. Didn't mean to pee on your parade.

    Put your foot on the pad and lift with the seat rail. No handle needed! Good luck!!
    #10
  11. concours

    concours WFO for 41 years

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    They were/are good bikes, just that one you have there has been pissed on by mother nature for too many decades. There is a DAMNED NEAR MINT one for sale at http://www.gatecitycyclecenter.com/
    I think he wants $1800 for it.
    #11
  12. Krantz

    Krantz OMG aka WTF

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    <Sorry. Didn't mean to pee on your parade.>
    Oh, no problem, Ron.Not at all. I'm in it anyway and for not that much-150$.Space is not a concern. Time- whole winter is ahead.If i can make it run on the cheap(we all would like to do that, aren't we?)then i'll be happy.If not - maybe part it out.
    So for now I'll keep at it and by the way last night i hoisted it up, put in 5th gear and yanking back and forth the engine turned.So it's free and the project continues.
    #12
  13. concours

    concours WFO for 41 years

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    Rock on!
    #13
  14. bk brkr baker

    bk brkr baker Long timer

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    Back in the day a friend bought one, as everyone else had something to ride and wanted to ride too. He got along well with it until, while riding home from work , in traffic, he hit a big piece of concrete that had fallen from a truck.
    The concrete broke the front wheel, sending bike and rider across the oncomning lane and the bike ended up-right wedged in some bushes. My friend suffered a broken femur that got a titanium rod through it.
    After he was walking again, he fixed the bike. He replaced the swoopy handlebars with low Superbike style bars and the exhaust with a 3 into 1 pipe that really howled. He rode the bike some more before selling it. It was his only street bike.
    #14
  15. knybanjo

    knybanjo kinda slow

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    :nah Just a little bit of SeaFoam....
    #15
  16. Rob Farmer

    Rob Farmer Long timer

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    I really like the Xs 750. I put loads of miles on them in the 80's.

    Gearbox designed by Getrag and then built by the japs using screws made from cheese. - you may know this but there's a large Allen bolt on the end of one of the gear shafts, the heads on the bolts had a nasty habit of snapping off allowing two gears to be selected at the same time. I've seen the carnage when this happens on a couple of occasions.

    Just take the Allen bolt out and fit a decent quality bolt in its place. Good insurance for a $1 or so.
    #16
  17. Krantz

    Krantz OMG aka WTF

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    Thanks Rob! Yes i'm browsing the net for info in these.
    Seems like main issues are 2-nd gear,and possibly leaking petcocks.
    Haven't got far today with it.Mostly prepared workplace-bench,place for parts that wil come off, etc.
    Took the exhaust off,front and rear brake calipers,sprayed everything with "liquid wrench"-what a devilish concoction! Very agressive,gives me massive headache, but works!
    Calipers came off easy.So far i like this clever little fella.Comparing to my airhead,which was designed and executed with engineering superioroty and elegance in mind ,this thing had simplistic approach.They probably figured something like a template to create a motorcycle and after that promised bonuses to anyone who made it simpler yet.
    But gyus,please continue to chime in- any little bit of info is greatly appreciated.


    [​IMG]
    #17
  18. Krantz

    Krantz OMG aka WTF

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    I'm slowly taking it apart.After decade and a half under the sky some stuff is frozen, other is just fine.Ignition looks really clean.Front brakes are frozen solid, rear is not bad.

    [​IMG]
    #18
  19. MacNoob

    MacNoob piney fresh

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    Put it in top gear, pull in the clutch, roll downhill, dump clutch.

    I'll either free up the engine or crash interestingly.
    #19
  20. Krantz

    Krantz OMG aka WTF

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    The engine turns.Wheels turn.Brake calipers a free.

    [​IMG]

    I wonder who designed fuel petcocks like that.

    [​IMG]
    #20