Identify Your Bike

Engine Ranges

www.norvilmotorcycle.co.uk

Please Quote Your Model, Year, Engine Number & Chassis Number On ALL Orders Placed With Us.  Please Also Tell Us About Any Modifications That Have Been Made To Your Bike That Could Affect Spares Suitability.

UK Residents With Historic Vehicles Need To Read This
In the UK, there is now a 40 year rolling exemption for vehicle excise duty (bike tax) on classic vehicles.  If your bike is 40 years old or older then the bike should be tax exempt.
YOU MUST STILL TAX THE VEHICLE OR DECLARE IT AS OFF-ROAD USING A "SORN" DECLARATION FORM.  Failure to do either will result in a fine.  Legislation that came into force on January 1st 2004, stated that any vehicle not Taxed or SORNed, will lose it's right to it's "Original Registration" mark.  How would your bike look with a ghastly yellow and black "Q" plate.  You have been warned.........

From 1946 to 1974 Norton machines had matching engine and frame numbers.  Commando's after engine number 307311 have frame numbers that start from F100000.

Code No Model Of Bike
2 16H
3 18
3T 500T
4 ES2
6 19R
7 Big 4
8 16H Or Big 4 Plunger
9 19S
10 International 40
10M Manx 40
10M2 Manx 40 Featherbed
11 International 30
11M Manx 30
11M2 Manx 30 Featherbed
12 Model 7 Dominator 500cc
122 Model 88 Dominator 500cc
13 Model 50
14 Model 99 Dominator 600cc
15 Model 77 Dominator & Nomad 600cc
16 Nomad 600cc
17 Jubilee 250cc
18 All 650cc Twin
19 Navigator 350cc
20 Atlas 750cc
20M3 Commando Early 750cc
20M3S Commando Points On Timing Cover 750cc

From 1946 to 1960 the year letter the best way of determining the age of a machine because there is an overlap of dates and numbers in the factory records.

Letter Code Year  Engine Number
  1945 1001
A 1946 2131
B 1947 7756
C 1948 13792
D 1949 20701
E 1950 27100
F 1951 35560
G 1952 42700
H 1953 48900
J 1954 55350
K 1955 60700
L 1956 66600
M 1957 71360
N 1958 77400
P 1959 80488
R 1960 87038
  1961 94500
  1962 101060
  1963 105000
  1964 108000
  1965 111650
  1966 115870
  1967 119760
  1968 124300
  1969 130000
  1970 134700
  1971 141700
  1972 200001
  1973 212278 & 300000
  1974 307311
  1975 325000

The information given below is the best guide we can give and was compiled with the aid of original factory records.  This information is still only offered as a guide, please contact the VMCC (address given at bottom of page) for more in depth information regarding YOUR machine.

 

Model Date Number Comments
Jubilee Nov 1958 79866 First machine
  Aug 1959 84525  
  Sept 1960 92485  
  Nov 1960 93773  
  Sept 1961 99598  
  Sept 1962 103446  
    106838 New gearbox
  Sept 1963 107988  
  Sept 1964 111026  
  July 1966 117825 Last machine
Navigator Nov 1960 94573 First machine
  Sept 1961 99110  
  Sept 1961 99172  
  Sept 1962 103275  
    106838 New gearbox
  Sept 1964 106980  
  Aug 1965 114519 Last machine
Electra July 1963 650 First machine
  Sept 1964 6201  
  Aug 1965 7961 Last machine
500cc Oct 1960 93235 Standard
  Oct 1960 93385  
  Mar 1961 96539 First 88SS
  Aug 1962 97227 Last Deluxe
  Sept 1962 101918 Standard
  Sept 1962 102911 88SS
  Sept 1963   Last Standard
  Sept 1964 109512 88SS
  Oct 1965 114870  
  Feb 1966 116372  
  July 1966

118151

Last 88SS
600cc Aug 1960 92270 Standard
  Sept 1960 92460  
  Mar 1961 96496 First 99SS
  Aug 1962 103392 Last 99SS
  Aug 1962 103801 Last Deluxe
  Aug 1962 103929 Last Standard
650cc Nov 1960 93601 First Machine
  Aug 1962 104121 Last Deluxe
  Sept 1962 104123 650SS
  Sept 1962 104267 650 Standard
  Sept 1963   Last Standard
  Sept 1964 110375 650SS
  Oct 1965 111920 New Strengthened Con-Rods Fitted
  Oct 1965 114870 Cylinder Barrel Spigot Removed
  1966 115871  
  Feb 1966 116372 6-Start Oiling System
  1967 119760  
  July 1967 123164  
  Feb 1968 126124  
  Sept 1968 129147 First Mercury
  Feb 1970 129894 Last Mercury
Atlas Feb 1964 108000 First UK Atlas
  Sept 1964 111377  
  Oct 1965 111920 New Strengthened Con-Rods Fitted
  Oct 1965 114870 Cylinder Barrel Spigot Removed
  1966 115871  
  Feb 1966 116372 6-Start Oiling System
  1967 119760  
  1967 120323  
  Feb 1967 121007 Concentric Carbs Introduced
  March 1967 121307 Coil Ignition Introduced
  May 1967 121665 P11
  Aug 1967 123364  
  Jan 1968 124372 P11A
  Sept 1968 128646 P11A Ranger
  Nov 1968 129145 Last Ranger

Then Onto Commando...........

Engine Number Year Mark CC Model Comments
126125   I 750 Fastback First Commando (Atlas MKIII).  Engine prefix 20M3.  External rev counter drivePoints in old magneto position.
131257 1970 II 750 Fastback S-Type Roadster Engine prefix 20M3S.  Points in timing cover.  Integral rev counter drive.  Wipac handlebar switch.
141783 1971 III 750 Fastback Roadster SS HiRider Fastback Long Range (Steel Tank) New style fork yokes, non-adjustable type.  4:10 front tyre.  Lucas handlebar switches.  Centre stand moved from frame to gearbox cradle.
145183 1971   750 Production Racer Last production racer produced in June 1971
200000 1972 IV 750 Fastback Roadster HiRider Interstate Breather moved to between gearbox plates behind engine - was on the left hand side of the camshaft.  Engine number prefix discontinued.  Optional disk brake and combat engine.  Revised shape handlebar levers.
220000 1973 V 750 Roadster HiRider Interstate Black instrument cases.  Square rear light (actually fitted from 212278).  Disk brake on all but Hi-Rider.
300000 1973 I 850 HiRider Interstate 850 motor with silver barrel.  Balanced exhaust system.  All Disc braked.
306591 1973 IA 850 Roadster Interstate 850 motor with silver barrel. Homologated model for Europe with large black box air box and peripheral discharge silencers.
307311   II   IIA 850 Roadster HiRider Interstate 850 motor with black barrel.  Roadster & Interstate available as homologated model.  Called MKIIA for Europe.  For USA with old type silencers and air filter.
325001 1975 III 850 Roadster HiRider Interstate 850 motor with black barrel.  Left hand gear change.  Right hand rear brake.  Front disc moved to left hand side.  Electric start.

Still Want More Info?

The VMCC (Vintage Motorcycle Club), now has custody of all of the original motorcycle factory records which contains the surviving records of a very large part of the British motorcycle industry.  They can assist you with just about any historic British bike query, whether you are buying, repairing, restoring, researching or registering.  They can even advise on the procedure for gaining an age related plate.  The service is open to VMCC members and non-members alike though joining as a member has many benefits and discounts.  Give them a try, email library@vmcc.net or visit their website at www.vmcc.net

Click here for additional information regarding retaining or obtaining an age related number plate for your bike

How To Tell If You Have A Combat Engine

The first combat engine number was 200976 (1972), not all 750 engines after this number are combat.  The 750 combat engine has a C at the top front of the cylinder head and it was originally fitted with 32mm carbs.  Also, the gap between the head and the barrel is narrower than the gap between the other fins.  The camshaft on a combat is stamped with SS, this is called a 2S camshaft and not actually an SS camshaft (the SS camshaft is actually stamped X1 or X2 - this is a point of much confusion).  Once a combat engine has Superblend main bearings (064118) fitted and a the modified breather, which is a big engineering job to do properly, (we do this), then the combat engines are bullet proof.

Legal Tax Evasion

Cars & Bike produced before 01/01/1973 are exempt from vehicle excise duty (road tax) when used on British roads.

Page Last Updated 31/03/16