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Water-cooled 650 Engine


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#1 uralptm

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Posted 07 September 2014 - 05:19 PM

Good evening ... I am Philip of Portugal and a proud owner of a ural, ural but this is a little different from the other models, as you can see in the photos.
I bought it to a collector, having the same said that the bike had been an exhibition in Cuba and that would be rare model in relation to the radiator to be cooled and liquid.
The rare being has its good and bad things and I am now in bad, because I need to know more about this engine model, because I need to get parts to be able to start some asphalt Posted Image

From already thank you for your attention.

Attached File  tel3 198.jpg   140.82K   43 downloads

Attached File  vespas.jpg   95.31K   38 downloads

#2 Peter Williams

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Posted 07 September 2014 - 11:41 PM

Pretty rare, I doubt if more than 50 were ever made. What parts do you need? If it's anything to do with the cooling system, then you're probably out of luck. From memory, those watercooled engines used a special oil filter which was half the length of the standard filter and are probably unavailable. You also have the Russian 500W alternator which has its own problems.

#3 spook

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Posted 07 September 2014 - 11:49 PM

Wow thats a bit of an odd one! Good find I guess, but good luck on finding parts...

#4 Russ Noe

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Posted 08 September 2014 - 11:55 AM

I have seen quite a few of the water-cooled Urals, but they were ALL used in the Irbit Ural Factory.  Most were on tricycle bodies, for moving goods throughout the factory.

I suggest you contact Irbit Motor Works of America
http://www.imz-ural....contact-us.html
and ask them if they can help with information and parts.  

One of the The Factory Owners (also IMWA CEO and chief Boss Man), Ilya Khait, can be contacted through IMWA and might be the best person to help you with your "escaped" water-cooled Ural.

Please let is know what you learn!  This will be interesting.
~RN

#5 uralptm

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Posted 08 September 2014 - 02:29 PM

Good evening everyone and thank you for your help. already sent email in an attempt to get more information when I know more details I will inform you for sure.

best regards

#6 uralptm

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Posted 09 September 2014 - 06:26 PM

the asweer from ural   america:

This is what I received from the factory:

Accurately identify this bike is impossible. No documents at the factory.
This Ural motorcycle with an engine of 650 liquid cooling. 650 liquid-cooled engine mounted on tricycles and ATVs, as well as optional on the different models of the Urals.
Engine 650 - IMZ-8.104 produced approximately between 1993 ... 1998.
Engine 650 - IMZ-8.124 produced approximately between 1998 ... 2000.

Sorry, this is all that I received.


Patricia Kelsey
Administrative Assistant
Irbit Motorworks of America
Ural Motorcycles
Pat@imz-ural.com
1-425-702-8484 #100
www.imz-ural.com

#7 uralptm

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Posted 10 September 2014 - 08:53 AM

http://www.motonews.pt/ural.zip


Good afternoon, this link has to download multiple photos and measurements of ciclindros and head, my difficulty will be in finding the segments and pistons, the rest think it will be the same measures

#8 Peter Williams

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Posted 11 September 2014 - 08:45 PM

If you could list what parts you need and why you need them, it would make it easier to help you.

I rang a friend who knows an awful lot about Urals. He said that there are three possible engines and that the major difference is the pistons.

IMZ-8.104  650cc, 78mm flat-top four ring piston, 7.0:1 compression, petrol 76-80 RON
IMZ-8.124  650cc, 78mm domed three ring piston, 8.8:1 compression, petrol 93 RON
IMZ-8.110  720cc, 82mm domed three ring piston, 8.8:1 compression, petrol 93 RON

Look at the steering neck of the bike and see if there's a manufacturers plate. If it's in Russian, look for the word двигател. It should have the code for the engine as well as the date of manufacture.

#9 Terry Crawford

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Posted 12 September 2014 - 07:55 AM

The first 2 numbers or letter of the serial number of a 650 will tell you what year the engine was made.
37 - 94
38 - 95
39 - 96
97 - 40
98 - W
99 - X
2000 - Y
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#10 uralptm

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Posted 12 September 2014 - 12:15 PM

Attached File  unnamed.jpg   43.04K   26 downloads


Good afternoon everyone, send this picture in order to gain more information

#11 uralptm

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Posted 12 September 2014 - 12:23 PM

I have been talking with staff-boxer engine in an attempt to find parts for my bike, but basically will be:
all joints, head, cylinder, complete valves, pistons complete ...

#12 Terry Crawford

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Posted 12 September 2014 - 01:32 PM

We need the engine serial number on the left side of the engine up in front. There are two sets of numbers. The 1.8XXXX is the ass'y part number the other set is the serial number of the engine.
Crawford Sales Co. in Michigan
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#13 Peter Williams

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Posted 12 September 2014 - 06:43 PM

View Posturalptm, on 12 September 2014 - 12:23 PM, said:

I have been talking with staff-boxer engine in an attempt to find parts for my bike, but basically will be:
all joints, head, cylinder, complete valves, pistons complete ...

The maker's plate shows that your bike is an IMZ-8.1030 built in 1998 with an IMZ-8.104 engine.  It should be an IMZ-8.1033 but that's neither here nor there. The engine is a 650cc, with flat top pistons, a compression ratio of 7.0:1, producing 23.5 kW at 5600 rpm and 44.1 Nm at 3600 rpm. It is designed to run on petrol/benzine of 76-80 RON.You could rebuild the engine with domed pistons giving you a compression ratio of 8.8:1, producing 26.5 kW at 5600 rpm and 44.1 Nm at 3600 rpm. It is would designed to run on petrol/benzine of 93 RON.

The pistons and valves look to be standard Ural 650 parts. The rockers look like Ural 750 parts. You're not going to find new cylinder heads or barrels so refurbish what you've got. The standard Ural 650 base gasket should fit. You should be able to modify an aluminium head gasket to fit, or a later 750 head gasket, otherwise you need to make a copper head gasket and anneal it. Talk to an engine reconditioning company about that.

#14 Peter Williams

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Posted 12 September 2014 - 07:18 PM

The designer of the watercooled engine may be able to help you with some parts. His name is Viktor Nikolaevich Zavyalov. After he left IMZ he made a conversion kit for 650 engines http://kbmtc.ru/W-650-7.htm

E-mail address is info@kbmtc.ru Write in Russian only, use Google Chrome or Yandex to translate and keep the words simple. Run your e-mail through http://imtranslator....h/translation/# to make sure it makes sense.

#15 uralptm

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Posted 15 September 2014 - 06:15 PM

View PostTerry Crawford, on 12 September 2014 - 01:32 PM, said:

We need the engine serial number on the left side of the engine up in front. There are two sets of numbers. The 1.8XXXX is the ass'y part number the other set is the serial number of the engine.

053127

810400
W0000149




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