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Old 06-17-2013, 11:20 AM   #1
Rubiconnn OP
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Picked up my frist bike, a Ural Solo.

So I picked up a 1996 Ural Solo 650cc with only about 1000 miles, I've been driving it to work and back no problem. However, there is a loud clunking noise coming from the right cylinder(not valve ticking, which it makes too). What could this be? Bad piston rings? Poorly adjusted carbs causing one cylinder to make more power than the other? I changed the engine and gearbox oil yesterday and apart from being black, there wasn't any sign of any metal shavings at all.

Here is a picture of this beauty after a tank spray.


Rubiconnn screwed with this post 06-17-2013 at 12:26 PM
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Old 06-17-2013, 03:10 PM   #2
Houseoffubar
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Welcome aboard!!!
A severely out of sync carb can sometimes make a surprisingly nasty hammering sound, but this is not common.
I have only played with a couple Urals, but I have seen some really sloppy piston clearances on the earlier ones.
You could have a collapsed piston skirt, or excess cylinder clearance.
If you can rule out valve train, hope for carbon build up. This can be very loud, but also unlikely.
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Old 06-17-2013, 03:16 PM   #3
ozmoses
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How does it ride? Looks like everything a bike should be!

Knowing nothing about URAL in specific I can only suggest checking out Sovietsteeds.
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Old 06-17-2013, 03:19 PM   #4
Mista Vern
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Have you gone to the Soviet Steeds forum? Those folks are super sharp on engine noises. http://www.sovietsteeds.com/forums/
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Old 06-17-2013, 03:49 PM   #5
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All three of the Urals that I've ridden in my life eventually blew up for various reasons - none of them with many miles on them - one of them while I was riding it. One got the rods welded to the crank because of oil starvation, one had a transmission eat itself, and the last had a big end come loose from the crank which then got forced through the top of the crankcase. In other words, don't let me ride your Ural. BAAAAD luck.
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Old 06-17-2013, 03:55 PM   #6
disston
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I don't think AW is cursed. I do think the Urals have a bad reputation that they deserve.

Ural is a copy of BMW of sorts. This means it is not a BMW.

You should have posted here before you bought this bike not after.
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Old 06-17-2013, 05:02 PM   #7
Warin
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Ural is a copy of BMW of sorts. This means it is not a BMW.
Yep. A Russian copy of a pre WW2 airhead. As such the expertise here for them is lacking.

I'd go elsewhere for help with it... but I'd advise you to cease riding it until you figure out what that noise is, riding it more could cause more damage.
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Old 06-17-2013, 06:24 PM   #8
Houseoffubar
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Quote:
Originally Posted by disston View Post
I don't think AW is cursed. I do think the Urals have a bad reputation that they deserve.

Ural is a copy of BMW of sorts. This means it is not a BMW.

You should have posted here before you bought this bike not after.
No no no, I saw the Ural documentary, they were first, BMW ripped off Ural, not the other way around! Just ask em!
Really amazing promo video though. They made EVERYTHING in house! Brake rotors, crankshafts, ETC, pretty impressive, even if the end result is not quite...well.....
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Old 06-17-2013, 07:13 PM   #9
Mista Vern
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OP, where are you from? How can we help if we don't know where you are so we can send you to someone? Damn nOObs.
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Old 06-18-2013, 09:27 AM   #10
Rubiconnn OP
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It rides pretty good, a little bit shakey though. I'm 99% now it's just very poorly synced carbs. The bike is running really rich (clouds of smoke and about 15 MPG), so I'm going to Seafoam it and and adjust them.
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Old 06-18-2013, 10:00 AM   #11
Mista Vern
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As with BMW airheads, you'll want to make sure your valves are set properly, timing is spot on, etc. before messing with the carbs.

Please fill out your profile, or at least tell us where you are located.
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Old 06-18-2013, 11:05 AM   #12
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Urals aren't all that bad but they are pretty crude. I used to work in a shop that sold them years ago. You couldn't always be sure they would even run out of the crate. The electrics were the worst part, once you went over that part, they would usually run,..... usually.

The carbs were the next worst part, so sloppy it was hard to get them to work right, loose slides might even be your noise! Next were the heads, the bikes would overheat and the guides would start jumping in and out with the valves! Back then, used BMW /2 heads were fairly easy to come by and we would put them on, they fit straight on. Next would be the nuts and bolts, the threads would be there, they just wouldn't hold because they were too loose!

That said, with some attention, they were really not all that bad. I've owned a few of them and who knows, I may own another in the future.

I took our shop Ural and made a short ride from Vancouver to Kamloops and back, you can find the story here http://pokiespages.com/ural.htm
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Old 06-18-2013, 12:14 PM   #13
disston
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This is not a problem that will be solved by SeaFoam.

As stated by Mr. Vern there is a protocol for air cooled engines. Set the valves, check timing and replace or gap the points, new plugs if needed and check the spark plug wires and caps. Then you are ready to adjust the carbs.

There are no short cuts on this one.
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Old 06-18-2013, 01:34 PM   #14
Bill Harris
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Quote:
Originally Posted by Pokie
I took our shop Ural and made a short ride from Vancouver to Kamloops and back, you can find the story here http://pokiespages.com/ural.htm
LOL. Quite a story.

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Old 06-18-2013, 01:46 PM   #15
Airhead Wrangler
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This is not a problem that will be solved by SeaFoam.
Oh, come on. According to KLR owners Seafoam will fix anything carb related, but before you mess with the carbs you need to spray some tappet adjusting spray on the rockers as well as smear some points gapping/timing paste on the points. Using the seafoam first won't help anything. Don't you know anything about bikes?
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