Leftka 3, no metal working airbox the build post

The "Pimp my Ride" section for Soviet bloc bikes. Everybody seems to have their own custom add-ons, modifications & accessories. Share your tips and post pictures of them here.
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This is the place for topics concerining modifying and accessorizing your Ural or Denpr.
Leftka
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Location: Naples, Florida

Leftka 3, no metal working airbox the build post

Post by Leftka » Sun Apr 14, 2013 2:56 pm

Parts:
5" x 5" x 8" vinyl fence post
http://www.homedepot.com/p/5-in-x-5-in- ... WqojhG9KSM
There is enough material in that section for 12 housings...
End caps
http://www.alliance-express.com/square- ... ert-glides
Was able to order two free samples.
Aluminum flanges, 2" and 2.25" 2 each
http://www.aircraftspruce.com/catalog/a ... langes.php
As requested edit:
CEET Ducting:
http://www.aircraftspruce.com/catalog/appages/ceet.php
And Air Filter:
http://frugalmechanic.com/auto-part/kn- ... 0mg%200200

Assorted hardware from Ace
ImageUploadedByTapatalk1365960367.638191.jpg
Angled aluminum stock for mounting bracket
ImageUploadedByTapatalk1365960711.777725.jpg
And some 1/8" weatherstriping. The u joint nuts were very instrumental in building an airtight box.
Housing was cut to size and hole saw used to create a 2.5" intake opening, which could be offset if you want to experiment, I centered this one...
ImageUploadedByTapatalk1365960806.896736.jpg
Lined the opening itch 1/16" walled fuel lie to create a smooth surface for air flow.
ImageUploadedByTapatalk1365960873.760491.jpg
The end caps were hole sawed to 2 1/8", and sandwiched between two flanges and secured with #8 machine head bolts and nylon lock nuts. I Chose to put the heads on the inside to have less interference with the filter element fit. A 2" rubber o ring slipped over each inside flange insures a tight seal for filter element. Edges are lined with weather striping for fitment and seal.
ImageUploadedByTapatalk1365964640.677329.jpg
ImageUploadedByTapatalk1365964663.921048.jpg
The inboard side end cap is a more permanent set up. All four sides of the housing and end cap edge are drilled to accommodate #8 machine head hardware. The flange of the end cap has a u joint nut clipped over at all four sides and provides a solid reinforcement for the plastic edge and of course something to screw the bolt into. This setup also allows to get a secure airtight fit by pulling the flange out slightly against the weather striping. The outboard end cap has weather striping around all four edges and just ne side is drilled, clipped and a single screw holds it snug and tight and makes for easy quick removal for inspect/service.
ImageUploadedByTapatalk1365964971.071059.jpg
ImageUploadedByTapatalk1365964992.976094.jpg
The housing is painted rust oleum hammered silver, the end caps flat black.
ImageUploadedByTapatalk1365965067.636699.jpg
ImageUploadedByTapatalk1365965090.863733.jpg
Of the 3 air boxes, this was the easiest to jet. I guessed at 128/42...ended at 130/42. The dynojet needles were at the 3rd notch from the top with 1 shim under them and that's where they are now, the airscrews are at 1.5 turns out but the carbs still need to be balanced and harmonized. The plugs look perfect after a full tank of non-ethanol through them. There was a slight giveback on the lowend but the midrange remains strong and the top end is very strong. The bike really pulls great from 1200 rpms all the way to redline. I hit 75 mph on a surface street here in Naples earlier this week. Fuel mileage is up 10% from the precleaner airbox. This box provides the greatest prefilter airbox volume, 154 cubic inches, versus a 4" diameter tube with only 46 cubic inches, that is based on using the mg 0200 element. All things considered, I like this airbox the best of the three I have toyed with. It was the easiest build, the easiest jet and best performing across the board.. Btw final fitting did require a little filing... :)
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Last edited by Leftka on Tue Apr 16, 2013 10:52 pm, edited 3 times in total.
Leftka
Naples, FL
2012 "Red October" Tourist, Ursula
128/40 Jets
Harmonized at 10" hg
Dynojet DNO106 Needles, 3rd Notch From Bottom
Leftka 3, ALLuminum Custom Airbox
K & N MG 200 Filter Element
7/64" Drilled Carb Slides
Power Arc Ignition with VOES Advance/Retard
Mod Top Mufflers on Stock Headers
Parabellum Scout Fairing
Retro Lighting
Left Hand Throttle, Front Brake and Clutch

Image

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Albuquralque
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Location: Albuquerque, NM

Re: Leftka 3, no metal working the build post

Post by Albuquralque » Sun Apr 14, 2013 2:59 pm

Thanks for the post! :thumbsup:
"Put a little gravel in your travel"


Previous Urals Owned: 2004 Wolf, 2006 Tourist, 2006 Patrol (TOW), 2006 Patrol (TOM), 2014 Patrol

Leftka
Order of Suvarov
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Posts: 3705
Joined: Sat Jul 21, 2012 9:34 am
Location: Naples, Florida

Leftka 3, no metal working the build post

Post by Leftka » Sun Apr 14, 2013 5:08 pm

Installed
ImageUploadedByTapatalk1365973544.618770.jpg
ImageUploadedByTapatalk1365973577.640320.jpg
ImageUploadedByTapatalk1365973614.274835.jpg
ImageUploadedByTapatalk1365973661.494032.jpg
ImageImage
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Last edited by Leftka on Mon Apr 15, 2013 6:30 pm, edited 1 time in total.
Leftka
Naples, FL
2012 "Red October" Tourist, Ursula
128/40 Jets
Harmonized at 10" hg
Dynojet DNO106 Needles, 3rd Notch From Bottom
Leftka 3, ALLuminum Custom Airbox
K & N MG 200 Filter Element
7/64" Drilled Carb Slides
Power Arc Ignition with VOES Advance/Retard
Mod Top Mufflers on Stock Headers
Parabellum Scout Fairing
Retro Lighting
Left Hand Throttle, Front Brake and Clutch

Image

danimal1228
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Location: Louisville, KY

Leftka 3, no metal working the build post

Post by danimal1228 » Sun Apr 14, 2013 6:01 pm

Awesome. Where do you get the filter from?
'08 Forest Green Patrol
+ 125/45 Jets + Missing Cats + JC Whitney Exhaust + HID H4 Headlight + Hitch +

'13 Maroon Solo sT
+ 130/45 Jets + Missing Cats + Pedestrian Slicer +

Leftka
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Posts: 3705
Joined: Sat Jul 21, 2012 9:34 am
Location: Naples, Florida

Re: Leftka 3, no metal working the build post

Post by Leftka » Sun Apr 14, 2013 6:04 pm

danimal1228 wrote:Awesome. Where do you get the filter from?
It's a k&n MG-0200, fits a 1976 moto guzzi 850...autozone, advanced auto parts, napa etc...
Leftka
Naples, FL
2012 "Red October" Tourist, Ursula
128/40 Jets
Harmonized at 10" hg
Dynojet DNO106 Needles, 3rd Notch From Bottom
Leftka 3, ALLuminum Custom Airbox
K & N MG 200 Filter Element
7/64" Drilled Carb Slides
Power Arc Ignition with VOES Advance/Retard
Mod Top Mufflers on Stock Headers
Parabellum Scout Fairing
Retro Lighting
Left Hand Throttle, Front Brake and Clutch

Image

danimal1228
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Posts: 242
Joined: Tue Oct 07, 2008 8:22 pm
Location: Louisville, KY

Leftka 3, no metal working the build post

Post by danimal1228 » Sun Apr 14, 2013 6:17 pm

Cool. Thanks. Definitely the kiss approach. I think I might have to try it out.

Is the housing pretty sturdy? Do you have any problems with heat melting the plastic?
'08 Forest Green Patrol
+ 125/45 Jets + Missing Cats + JC Whitney Exhaust + HID H4 Headlight + Hitch +

'13 Maroon Solo sT
+ 130/45 Jets + Missing Cats + Pedestrian Slicer +

Leftka
Order of Suvarov
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Posts: 3705
Joined: Sat Jul 21, 2012 9:34 am
Location: Naples, Florida

Re: Leftka 3, no metal working the build post

Post by Leftka » Sun Apr 14, 2013 6:55 pm

danimal1228 wrote:Cool. Thanks. Definitely the kiss approach. I think I might have to try it out.

Is the housing pretty sturdy? Do you have any problems with heat melting the plastic?
The unit is very sturdy, especially after the end caps are on...remember this is fence posting. Heat is not an issue behind the engine and above the tranny...been running the prototype for a week or more.
Last edited by Leftka on Mon Apr 15, 2013 1:21 pm, edited 1 time in total.
Leftka
Naples, FL
2012 "Red October" Tourist, Ursula
128/40 Jets
Harmonized at 10" hg
Dynojet DNO106 Needles, 3rd Notch From Bottom
Leftka 3, ALLuminum Custom Airbox
K & N MG 200 Filter Element
7/64" Drilled Carb Slides
Power Arc Ignition with VOES Advance/Retard
Mod Top Mufflers on Stock Headers
Parabellum Scout Fairing
Retro Lighting
Left Hand Throttle, Front Brake and Clutch

Image

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windmill
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Re: Leftka 3, no metal working the build post

Post by windmill » Sun Apr 14, 2013 7:52 pm

Looks good Richard,

Once I have my Ural aircleaner conversion unit optimized without the precleaner, I will start experimenting with modifying the Engineaire precleaner. I have several ideas that may make it work without restriction on your unit.
Barry

"Take care, sir," cried Sancho. "Those over there are not giants but windmills".

2007 Patrol 100k km and counting,
2018 M70

Leftka
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Location: Naples, Florida

Re: Leftka 3, no metal working the build post

Post by Leftka » Sun Apr 14, 2013 9:22 pm

windmill wrote:Looks good Richard,

Once I have my Ural aircleaner conversion unit optimized without the precleaner, I will start experimenting with modifying the Engineaire precleaner. I have several ideas that may make it work without restriction on your unit.
I'll be all ears...
Leftka
Naples, FL
2012 "Red October" Tourist, Ursula
128/40 Jets
Harmonized at 10" hg
Dynojet DNO106 Needles, 3rd Notch From Bottom
Leftka 3, ALLuminum Custom Airbox
K & N MG 200 Filter Element
7/64" Drilled Carb Slides
Power Arc Ignition with VOES Advance/Retard
Mod Top Mufflers on Stock Headers
Parabellum Scout Fairing
Retro Lighting
Left Hand Throttle, Front Brake and Clutch

Image

User avatar
Des
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Location: Bloemfontein, South Africa.

Re: Leftka 3, no metal working the build post

Post by Des » Mon Apr 15, 2013 2:03 am

Hi,
I've been following the “Air cleaner Evolution” on all of the recent post`s and I must say that it has been a real eye opener “Leftka!!!!!!!” You are an amazing man I place my hat on my chest and bow my head in humbleness to you in all aspects of life’s challenges you have a will and mind that a lot of people can only dream about. Between you and Windmill some really good things have come of the air cleaner rebuild. I`m here in South Africa and basically once a year a whole crowd of Uralists get together at a convention and go on a good long distance gravel run on occasion other more lengthily runs are organized in different parts of the country, obviously the air cleaner needs cleaning at some point and the Allen screws and rubber are just not user friendly as we all know. The round pipe and end caps seemed to be a good way to go with bottom end and mid-range power and not too much top end which would be perfect for gravel riding or am I wrong here I for one don’t really ride open taps on gravel as with most our wives or little ones are with us . Do you think it possible to reach a point with the CVK`s that bottom end, mid-range and top can have pulling power? In my neck of the woods no one here knows about pre-cleaners I would have to make mine when the time comes or even a few should the results pan out as the two of you progress.

Leftka
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Joined: Sat Jul 21, 2012 9:34 am
Location: Naples, Florida

Re: Leftka 3, no metal working the build post

Post by Leftka » Mon Apr 15, 2013 8:56 am

Des, thanks or the pat on the back. So much of what happens here was built on what those before us did. That is certainly the case here too. I'm simply adding/changing what others have accomplished. The group is very supportive and nobody cares much about who gets credit...it's great to move ideas forward. The precleaner is a great idea for those dusty conditions. Windmill is working on some solutions to incorporate it without affecting the top end. I left the intake of this model at 2.5" so that a precleaner could be added easily...we shall see...exciting times in the Ural world.
Leftka
Naples, FL
2012 "Red October" Tourist, Ursula
128/40 Jets
Harmonized at 10" hg
Dynojet DNO106 Needles, 3rd Notch From Bottom
Leftka 3, ALLuminum Custom Airbox
K & N MG 200 Filter Element
7/64" Drilled Carb Slides
Power Arc Ignition with VOES Advance/Retard
Mod Top Mufflers on Stock Headers
Parabellum Scout Fairing
Retro Lighting
Left Hand Throttle, Front Brake and Clutch

Image

gobium
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Re: Leftka 3, no metal working the build post

Post by gobium » Mon Apr 15, 2013 9:10 am

Richard
Your air box getting better all time.
I m following your threads.
Thanks for the post.

Btw on parts list above could add link to ceet hose and filter.

Leftka
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Location: Naples, Florida

Re: Leftka 3, no metal working the build post

Post by Leftka » Mon Apr 15, 2013 1:18 pm

gobium wrote:Richard
Your air box getting better all time.
I m following your threads.
Thanks for the post.

Btw on parts list above could add link to ceet hose and filter.
Van,
Edited and added on original post...thanks buddy.
Leftka
Naples, FL
2012 "Red October" Tourist, Ursula
128/40 Jets
Harmonized at 10" hg
Dynojet DNO106 Needles, 3rd Notch From Bottom
Leftka 3, ALLuminum Custom Airbox
K & N MG 200 Filter Element
7/64" Drilled Carb Slides
Power Arc Ignition with VOES Advance/Retard
Mod Top Mufflers on Stock Headers
Parabellum Scout Fairing
Retro Lighting
Left Hand Throttle, Front Brake and Clutch

Image

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LRP
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Location: Deltona, FL

Re: Leftka 3, no metal working the build post

Post by LRP » Mon Apr 15, 2013 8:10 pm

Lookin' good, Richard! 130 mains and 42 pilot jets are the right set up for Florida's heat. Now get a freer flowing exhaust and you will hit 80.

LRP :moto:

Dick
Army Bird Dog Pilot, Nam.
2018 CT
Traded '08 Patrol
2008 Royal Enfield cast iron military
1983 Honda Passport

19 previous motos

Leftka
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Location: Naples, Florida

Re: Leftka 3, no metal working the build post

Post by Leftka » Mon Apr 15, 2013 8:43 pm

LRP wrote:Lookin' good, Richard! 130 mains and 42 pilot jets are the right set up for Florida's heat. Now get a freer flowing exhaust and you will hit 80.

LRP :moto:

Dick
Dick,
I have drilled the baffles and lost the cats a while ago...she s running pretty good... :D
Leftka
Naples, FL
2012 "Red October" Tourist, Ursula
128/40 Jets
Harmonized at 10" hg
Dynojet DNO106 Needles, 3rd Notch From Bottom
Leftka 3, ALLuminum Custom Airbox
K & N MG 200 Filter Element
7/64" Drilled Carb Slides
Power Arc Ignition with VOES Advance/Retard
Mod Top Mufflers on Stock Headers
Parabellum Scout Fairing
Retro Lighting
Left Hand Throttle, Front Brake and Clutch

Image

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