I don't remember that hole being there...

Discussion in 'Hacks' started by hushpuppy, Jul 21, 2008.

  1. hushpuppy

    hushpuppy Been here awhile

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    Hello Ural experts :evil

    Long story short, I'm trying to bring a long dead 1998 Deco Classic Ural back to life. My father bought it around eight years ago with the intention of learning to ride, but never got around to actually using the thing. I believe it has around 550-600kms total on it, of which all but 50 or so were likely within the first year of its life. Seriously neglected machine.

    Yesterday I flew home to MN from NC for a week to visit family and friends, and he asked me to take a shot at getting it moving again.

    While changing its oil, I noticed an irregularly shaped second hole inside the engine oil fill port. It has jagged edges, and does not look like it was put there on purpose. There was a small amount of metal in the oil when I changed it, but no large chunks which would fit this hole. Attached should be two pics (first time attaching images.)

    [​IMG]

    [​IMG]

    Is this something that necessitates dropping the oil pan or otherwise exploring for metal bits? And what the heck could have caused it on a machine with only half a thousand kilometers on it?

    So far, I've changed its oil, replaced fuel filters, drained/filled the gas tank, and replaced the battery with a new sealed one. The spark plugs look serviceable. I was hoping to get this thing running and drive it around while I'm in town, maybe inspire him to actually drive it himself after I'm gone.

    Nearest Ural dealer (according to the IMZ website) is south of Rochester, about 120 miles away. I *could* trailer it down if necessary. . .

    Any thoughts? What sort of mess have I gotten myself into?
    #1
  2. wyowillys46

    wyowillys46 Tooteling my horn trumpet melodiously.

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    My bet is on a poor casting.
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  3. RomaDakota

    RomaDakota Illuminatus!

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    +1 on poor casting. A little JB and some creativeness will cure your hole. :D
    #3
  4. eastbloc

    eastbloc comprador bourgeois

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    Why bother. It all leads to the same location :)
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  5. Tarka

    Tarka Doesn't wave back.

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    Probably is due to poor casting,as previously mentioned.

    I`d be inclined to remove the sump (oil pan in your parlance) and clean any bits out,just for peace of mind if nothing else...it`s easy enough to do.

    My 650 Ural spat its timing gear teeth last year,losing about a quarter of the teeth and when I removed the sump it was full of broken gear teeth and a very fine metallic 'paste' in the oil from the timing gears.

    I wiped it all clear and rebuilt it,then flushed the engine through a few times with cheapo thin oil,changing the oil filter before putting the normal oil in.

    It`s still ok after a year of daily use.


    While you`re spannering,check your valve clearances and also check all fasteners.

    Drop the gearbox oil and final drive oil too,if you haven`t already.
    #5
  6. hushpuppy

    hushpuppy Been here awhile

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    Well then, I shall return to the project with renewed hope, thanks everyone. I am going to see how it runs without "creative fixes" first, and if need be I'll cross that bridge later.

    I intended to do the valve clearances and trans/final oils as well, should be educational. I know next to nothing about these bikes, but at least most things seem to be relatively straight forward.

    Thanks!
    #6
  7. RomaDakota

    RomaDakota Illuminatus!

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    My only worry would be the hole degrading as the dipstick is removed and installed over and over. This could cause aluminum shavings from the outer region of the hole. I wouldn't worry about it too much and the filter system should keep the bits from circulating.
    #7
  8. jeep44

    jeep44 junk collector

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    I just went out and looked at my '97 650 Ural. It has EXACTLY the same hole in that position-I'm guessing it is a sort of breather. I definitely wouldn't fill it or anything like that. If you like I could take a photo.
    Change all your oils,and get one of those small grease guns,and a needle point for it to shoot some grease into the zerk fitting on the universal joint at the final drive-it's close quarters,and takes something like this to fit properly.

    Another hint: join sovietsteeds.com, and russianiron.com. you will get information from guys that know these machines inside and out.

    I went back out and took a pic.
    [​IMG]
    #8
  9. hushpuppy

    hushpuppy Been here awhile

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    Jeep44,

    I just wanted to thank you for taking the time to get that pic. Nice to see its not a unique case. If I have reason to be working on this thing beyond this week, I'll be checking out those forums.

    Thanks,

    Matt
    #9
  10. ReCycled

    ReCycled Been here awhile

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    Now you made me go and look at the Ural motor block in my basement.

    The oil fill tube is pretty much a straight shot down to the sump. It's not a perfect tube, it's partially open into the block for easier filling. The "extra" hole is a vent directly into the upper portion of the block.

    If you are filling with a funnel that seals the fill hole, you'll need a way for the air displaced by the oil to escape.
    #10
  11. wyowillys46

    wyowillys46 Tooteling my horn trumpet melodiously.

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    The crankcase already has a breather.
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  12. muschelschubser

    muschelschubser Been here awhile

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    But that one is either open or closed, depends on the camshaft position.

    Dirk
    #12
  13. RomaDakota

    RomaDakota Illuminatus!

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    I still vote for a bad casting - could have lasted for years. A vent there is not necessary and highly unlikely it was planned. If one tears one of these down to case, you will find many examples of strange casting situations and possibly some factory repairs. My very old bikes produced in Irbit and the newer produced bikes don't have this. Also, my Dnepr does not have this.
    #13
  14. windmill

    windmill Long timer

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    Used to have a Ducati E900, first time I serviced the air filter, I found a Italian candy wrapper in the air box. Wouldnt hurt to check Your oil pan. My 07 patrol has that extra hole also.
    #14
  15. ReCycled

    ReCycled Been here awhile

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    The vent is there on BOTH of my 650 Urals. It would only be functional when the dipstick/plug is removed, supporting my funnel vent theory.

    There is actually a larger, better machined hole to the top of the motor block on my Dnepr 650.
    #15