Welcome To The Norton Motorcycle Machine Shop

James Comstock

This site is for information only. Please e-mail me with parts or service requests.

Here is where you will find quality  machine work for your Norton Motorcycle.  I do any kind of work from restoring your cylinder head so it looks like new to building and dyno tuning custom race engines. If it can be done to a Norton I have probably done it before and can do it again for you. 


My specialties include but are not limited to:

Aluminum bronze exhaust thread inserts

Cylinder head flowing and oversize valve conversions for street or race.

Standard cylinder head rebuilding

Fin repairs and full welding services

Cylinder boring and heat dissapating barrel coatings

Crankshaft service and dynamic balancing

Dyno engine break-in and tuning

Webcam camshaft dealer

Andover Norton parts dealer

Carrillo connecting rods

Conical street sping kits with Ti retainers

Video links showing a few of the repairs I do.

Oils suitable for Nortons


Exhaust thread repairs



Stud inserts



Spark plug threads



Cam scrolling



Contact Information

My shop phone is 719-646-2610

My shipping address is:

James Comstock

1277 21st Lane

Pueblo Co. 81006


 I run a one man operation so if I don't answer it is likely that my hands are full so leave a message and I will return your call.

 Or better yet, send me an email at >comnoz2@comcast.net<

Behind the Scenes of My Home Page