As one of my main interests is vintage Triumph motorcycles, I have had to research engine and frame numbers, together with information on availability of engine bearings.
There is a fair amount of information out there on engine & frame numbers. However, information on engine bearing parts for earlier Triumph models is scarce. So, I have compiled a few tables for us enthusiasts. It includes most Triumph models and has info on cast numbers for connecting rods, big & small ends, main bearings and cage info. The same info is available from a UK supplier but I found it a little difficult to find what I needed, so I made my own tables.
Caveat: The information provided is just info gathered. While I believe it to be accurate, please do not solely rely on it. It’s there as a guide and you should double-check the information with a supplier, or trusted advisor.
Triumph engine & frame numbers:
Veteran Vintage Classic Triumph motorcycles, All years from 1905 to 1980
Just Veteran Triumph numbers, 1905 – 1914
Triumph Model H, Military issue and Civilian bikes, 1915 – 1923
Triumph Junior vintage veteran motorcycles, 2-stroke models, 1913 – 1923
Triumph single cylinder motorcycle model engine & frame numbers 1924 to 1928
Triumph single cylinder motorcycle model engine & frame numbers 1929 to 1933
Triumph single cylinder motorcycle model engine & frame numbers 1934
Triumph single cylinder motorcycle model engine & frame numbers 1935 & 1936
Triumph pre-unit twin cylinder motorcycles from 1937 to 1939, engine & frame numbers
Triumph pre-unit twin cylinder motorcycles from 1940 to 1949, engine & frame numbers
Engine and frame numbers for Triumph Military Singles 3HW, 3SW, 5SW, 1939 to 1945
Engine and frame numbers for Triumph Military 500cc Twin TRW, 1950 to 1964
Triumph Unit construction models, engine and frame number information. 1950 on
Information on Cylinder head cast numbers
Triumph Twins Triples Cylinder Head & barrels cast numbers, model, year
Triumph Rigid frame gearboxes 1946 to 1954
Tiger T85, T100, 3T DeLuxe, 5T Speed Twin, 6T Thunderbird, TR5 Trophy, T110
Engine bearing information:
Triumph 350cc to 550cc, Bearings, 1929 – 1970. Models included on this page are: Triumph NSD, ND, 5-1, 5-3, WL, 3-1, 3S, 3SW, 3SE, 3-5, 3-2, T80, 3H, 3HW, 3T, Twenty one, 3TA, Tiger 90 (unit and T90 (single), N, 5S, 5SW, 5SS, TT, ST, Ctt, 5-2, 5-4, 5-5, 5H, 5T, T100 (PU), TR5 (PU), 5TA, T100 (unit models incl, A, SS, C, S, R & T)
Under 350cc Triumph engine bearing information and part numbers. Models included on this page are: Triumph Tina, T10, Tigress scooter, Z, Gloria, The Terrier (T15), Tiger Cub (T20), Super Cub (T20B), WA, WD, 2/1, 2/5, L2/1, 2H, Tiger 70.
550cc and over, Triumph engine bearing information and part numbers. Models included on this page are: Triumph NSD, ND, 5-1, 5-3, 6s, 6T Thunderbird, T110, TR6, T120, T150.
View Triumph parts available:
View all pre-unit Triumph parts, projects and bikes
- Triumph 2H
- Triumph 3HW
- Triumph T100 (pre unit)
- Triumph 5T / Speed Twin
- Triumph 3T
- Triumph 6T, Thunderbird
- Triumph T90 (single)
View all Unit construction Triumph motorcycles
- Triumph Tiger Cub T20, T20B (and maybe the odd part for the T15 Terrier)
- Triumph TR25
- Triumph Tiger 90
- Triumph T100 models
- Triumph T120 Bonneville
- Triumph 3TA
- Triumph 5TA
- Triumph Twenty One
View all early, flat tank Triumph models