Colorado Norton Works
28438 Road P
Dolores, CO 81323
Phone (970) 882-7163
Fax (970) 882-7163
Hours M-F, 8-5 Rocky Mountain Time
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| U.S. Shipping Rates |
$1 - $50: $11
$51- $100: $13
$101 - $150: $18
$151 - $200: $23
$201 - $300: $26
Over $300: $30
All freight costs include insurance.
Please Contact Us for Shipping quotes outside the U.S.
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"I now remember why I started riding in the first place. I like the way the line of the seat follows the gas tank. Everything fits so well. The seat and the bags really are perfect. The power is amazing, and nothing handles like a Norton. I did not think that it was possible to improve on the stock Norton looks, but you did it. This is something I will treasure for a long time."
- Mike Lyons
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| Motorcycle Engine |
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| Colorado Norton Works offers a variety of motorcycle engine parts and accessories to help you rebuild, install and modify your Norton Commando engine. Choose from options such as our throttle, oil filter adaptor or blanking plates to improve the efficiency of your engine. Or if you're working on the rebuild of your engine, our motorcycle engine replacement jig and support stand can protect both your engine and your Commando motorcycle during the process. |
Breather Modification |
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Development: Jim Comstock
Manufacturer: CNW
Description:
We are very excited about offering the most efficient breather modification for Commandos on the market. This kit is developed and designed for maximum performance. We have operated this through a variety of circumstances and rpm ranges and how found it to actually pull a vacuum in the crankcases up to about 4000 rpm. From there to red line its virtually running at 0 pressure. The benefits are many and the idea of reducing the excessive pressure in the crankcases that, due to the parallel twin design, will free up the engine and actually create some horse power. It will also virtually eliminate any and all leaks associated with the pressure in the cases. You will notice this where there is a gasket, seal or a material joint. Because of additional modifications that we do in the timing side case to further increase the performance of the breather we are also lowering the operating temperature of the engine oil.
In order to install this kit the engine needs to be completely stripped down as we mill a mounting surface on the lower backside of the drive side case half. We also modify the timing case half.
There is one Commando engine that was built that will allow the breather to be installed even if the engine is all together. This is the engine built through 1972 that has a large tubular breather installed on the backside of the cases. So it’s located inbetween the transmission and the engine. By removing this original breather and installing our model you will see most of the benefits mentioned above. Due to the fact that we wont be modifying the timing side case half we cannot guarantee 100% performance. It will still outperform any other breather by far. We can of course do the complete modification on this year engine as well if we do have it stripped down completely.
The above mentioned results are of course directly related to how the engine is built as piston clearance, cylinder bore, piston ring quality, head work, gasket quality and much more will all play a part in how well the engine breather will operate and what kind of results you will experience.
- Experience an increase in engine performance
- Eliminate persistent leaks at gaskets, seals, tach drives, head, crank case joints and more
- Lower the operating temperature of the engine oil
- The valve can operate consistently during a far higher rpm range than the Commando engine can ever reach
- The valve is not affected by oil contamination and can perform even if submerged
- The valve will actually aid in returning the crankcase oil back to the oil tank in case the engine has wet sumped
- The valve housing is CNC machined out of high quality billet aluminum
- The valve has an indefinite service life and will not have to be replaced
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#1712
Our Price: $265.00 Special order – Please CONTACT US (not available through online ordering)
This includes:
- Milling the drive side case half
- Modifying the timing side case half
- All parts necessary to install the breather valve
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CONTACT US |
#1713
Our Price: $220.00
This includes:
- All parts necessary to retrofit the breather to the existing mounting location for the original breather.
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Optional services:
- Clean both case halves. Bead blasted and completely prepped. All threaded holes are chased and cases are ready to be re-assembled ($150.00)
- Install new Super Blend main bearings in above prepped cases ($20.00 plus cost of new bearings)
- #1401 Super blend bearings ($113.95 Each)
If CNW does the above optional services to the cases, both the cleaning and installation of new bearings, then the breather kit #1712/13 is also installed prior to returning the parts. If the cases are not cleaned the breather kit #1712/13 is delivered separately to be installed by the customer. |
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Anti wet sump valve |
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Manufacturer: CNW
Description:
- This is it! This inline valve installed into the feed line from the oil tank to the pump will solve your wet sump issues permanantly.
- Easy install
- Kit includes 2 stainless steel hose clamps
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#1601
Our Price: $72.00 |
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Oil Filter Adaptor |
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Manufacturer: CNW
Description:
- Changes the threads on your oil filter housing
- Simple installation in minutes
- Allows use of readily available modern oil filters
- Kit includes an oil filter and a list of filters that can be used |
#102
Our Price: $18.95 |
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Throttle |
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Manufacturer: Barnett
Description:
- Vintage look
- Steel sleeve
- Chrome housing
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#701
Our Price: $29.00 |
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Vent Line Filter |
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Manufacturer: N/A
Description:
- Install at the end of your oil tank vent hose to prevent oil from bleeding out
- Completely washable
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#206
Our Price: $15.95 |
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