U2 Upgrades, part 3

The CHT and Tach gauges are installed:

Charlie from Crawford Sales has the tach and a great wire install kit with good instructions.

The CHT came from Aircraft Spruce.  The temp probes are ring type that attach at the base of the spark plugs:

Mickey drilled and tapped the upper fork tube nuts for the gauge brackets.  Charlie also sells these.

 

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Matt on the Denali Highway

No doubt there was rain and mud.

Matt completed the Denali Highway run with only one breakdown and only one episode of fuel exhaustion.

Any two wheelers out there?

Well done!

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A Day at the Garage ~ and U2 Upgrade, part 2

It is not uncommon that the Alaska Uralists will gather at Mickey’s for a day at the garage.

That’s Mickey there on the left.

My upgrade parts were in and I had things to do!  I finished up the 500 Km service by checking the front fork bearing tightness, it was OK.  Mickey drilled and tapped the top fork bolts for me so I could attach my Tack and CHT gauges.

I then installed the fender rack:

the sidecar windscreen and the spare tire mount and luggage rack:

I planned to install the front bumper on the sidecar but it was the wrong size… later.

Mr. U2 is starting to look like a Ural!

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Scram you Nasty Cats!

With the replacement of the carburetor jets, everyone and their dog has recommended to remove the catalytic converters.  They are supposed to be in the intermediate pipes of the exhaust.

So, I went looking for the catalytic converters.  All I found was a short section of rolled up thin metal foil.  It looked like someone stuck their metal cigar in there.  Now this thing I found certainly could not help with exhaust flow.  So, I took it out.  The unusual thing was that there was one just the same on the opposite side, and I took that one out too, hmmmm…. I never found the cats… :lol:

This is how I got to the right carb and muffler.  It’s actually quite easy.  I put a little bucket under the left engine guard to protect the paint.

With the new jets and sans cats, Mr. U2 is running great!

Oh, BTW, another recommendation: air mixture screw to 1.5 turns CCW from soft seat.  I did that too.  Then reset the idle and running carb balance with the TwinMax.

Some highway time revealed some nice looking plugs and no POP!

Here’s the final configuration:  Sea level / Mixture screw 1.5 turns CCW / Jets: 45 130 65 / 2 Shims? / Sans Cats / Stock Mufflers for now.

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Pop Pop Pop!

Since new the U2 has had a terrible cold start up POP POP POP POP POP POP. .. POP…POP!!!!  and POP!!!!!  It required a long long long long long warm-up.

I have been told, and the research confirms, that the carburetors are set extremely lean to meet US emission exhaust standards.  This weekend I put a CHT gauge on the rig and determined that the cylinder head temperatures needed to be at or above 300 degrees F before the popping would calm down.   :shock:

That was just not tolerable.  So, I got a carb jet kit from Holopaw.

(http://holopawcorvette.webpointusa.com/): Mains: 130, Pilot (Idle) 45, and 8 SS allen screws:

My research:

http://myural.com/keihin_32cvk_disassembly.htm : carburetor parts

http://www.dwightrahl.com/carb-jetting.html

http://sovietsteeds.com/forums/viewtopic.php?t=324

 

Changing the jets was easier than I thought it would be.  Took about 30 minutes total time. I just loosened the hose clamps of the carb flange and air filter intake hose and turned the carb upside down, leaving all other attachments in place. I followed the instructions above.  I took off the bottom float pan and screwed out the jets, then replaced and reassembled. I took some pictures, but go to the links if you are interested, there is much better documentation.

 

Guess what?  A HUGE HUGE difference!  Only a couple of small pops  and puts when coldest to remind me to let the thing warm up a bit before blasting off.  The jets that came out were smaller than advertised.  The main jet was only 122 (thought it would be 125), now 130.  The pilot (idle) jet was 40, now 45.

Happiness is a modification that works!

I should check the plugs now after some more riding time.

Now, what about those catalytic converters?

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Nancy Lake ~

About 75 north of Anchorage, towards Willow and Talkeetna, is Nancy Lake.

So the work is put aside for a little relaxation.

Nancy Lake is one of many of a complex of lakes popular to canoeists… and mosquitoes.

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U2 Upgrade ~ Windscreen

Windscreen: The National Cycle Plexystar II windscreen has a modernistic flair, not exactly what I was looking for.  But it does provide good wind coverage for body, shoulders, arms and hands.

I had to fabricate a bracket for the lower attachment points to fit the windscreen into the position I want:

I am quite happy with the result.  The windscreen sits up nicely and is clear of the front fork covers and headlight.  It will take a bit of tweaking to get the windscreen in the exact position so as not to rub on the headlight, but easy to do.

CHT Gauge: I ordered a Falcon dual CHT gauge and wire sensors that attach to the spark plugs.  Unfortunately, it is not anywhere near waterproof and I will have to seal the front glass and bevel and fabricate something to attach to the handle bars.

Distribution Block/Power Relay: The Patrol T does not come with the small power distribution block in the sidecar. I am looking at Eastern Beaver for this and needed connectors and wiring.  This would provide power ports and switched connections for electronic devices such as heated grips, intercom, gps, etc.

Tachometer: Ordered from Charlie at Crawford Sales.

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My Next Ural ~ U2

You may remember that I had visions of a new Ural.  Well that day has come.

My 2008 went up for sale a couple of weeks ago.  It just so happens that a Patrol T became available and I bought it.  I have yet to transfer the title from the Russian original.

 

Now I need to get going with the upgrades!

Ordered:

National Cycle Plexi 2 Windscreen

Tachometer

CHT guages

Wheel mount, wheel, and luggage rack

Sidecar bumpers, front and back

Sidecar windscreen

Gas can and mount

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What About that Noise?

As you remember, I determined that the screeching chatter I experienced in Whitehorse was due to bad alternator adapter bearings and I had the adapter rebuilt and installed it.  I did the timing gear slap adjustment by hand and by ear with assistance from Mickey.  It sound great now and runs strong.

One thing though.  Mickey noticed that there were several bearings missing in the adapter.  He recommended that I clean out the motor pan in search of the missing bearings.  I didn’t find any bearings, but found this:

So I cleaned up the pan and re-installed it.

Now the 2008 Patrol is for sale.

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Winter Recess

I know, I should be out there riding in the frost and cold.

The bike is in the garage, however, for a few projects.

 

Seat off, battery out for the charger.

I have pulled the alternator and adapter to check the bearings.

 

Sure enough, the alternator adapter bearings are loose.  At certain positions, I can wiggle the gear and shaft back and forth about 2 or 3 mm.

So, it’s time to take the assembly to Mickey.

That little black thing is my parking break handle.  It was broken once before, glued back together, fell apart.  Do you think there is a replacement out there?

Next, I am going to talk to Jeff at ModTop about recoating the exhausts.

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