Engine Drawings

DAIMLER V8

Overall views of the 4.5 Daimler. Hemispherical chambers and a forged chrome molybdenum steel crankshaft
L H cylinder bank and sectioned intake port
SU Carburettors and a Lucas distributor.
Crank No 1 journal & R H cylinder bank.
Lucas dynamo, crank balancer and bottom pulley wheel
R H rocker cover and valve gear detail, with sectioned plug tube.

The Majestic Major was a large, staid, luxury saloon car, but despite its weight it could out accelerate a good many sports cars of the period. This ability came from its superb 4.5 litre engine, illustrated here in cutaway form. The smaller 2.5 version was more numerous, fitted into the SP250 sports 2 seater, and a Jaguar bodied saloon as well. The brilliant Edward Turner was responsible for the engine design as well as the famous Triumph speed twin motorbike engine. The illustration was drawn in pencils onto fine illustration board.

NORTON/COSWORTH TWIN

Overall view of parallel twin engine, clutch & gearbox unit
Cylinder head, exhaust cams & drive gear
Toothed cam drive belt & support bearing housing
Cam cover with dowelled mounting pads, & twin 40mm amal carburettors held in position with jubilee clips!
Bottom end, with a horizontally split crankcase cut away to show the crank, alternator and cam belt arrangement.

This drawing was published in Classic Mechanics magazine to accompany a feature. In the early seventies the financially struggling Norton company commissioned Keith Duckworth (of Cosworth fame) to design a new engine in an effort to compete with the influx of  japanese competition. The new design was also to be available in a road going bike using a single SU carburettor, but the project never came to fruition because the funds just couldn’t be raised to finish the development. At 750cc the configuration was derived by adopting two cylinders based on their famous DFV racing V8, and the engine was a success. What a pity it never realised its potential as an example of British design excellence.

 

 

 

 

 

 

 




















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