Vintage AJS

This blog is about restoring vintage OHC AJS and Velocette motorcycles

Saturday, 28 February 2026

The DOHC 250 Velo Engine: Completing the Engine Build

There were a few outstanding jobs before the engine build was complete. I already had a rebuilt BTH TT magneto but this needed new studs to ...

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Contact Richard at vintage.ajs.uk@gmail.com

Vintage AJS: Richard Johns spent 45 years in the engine industry, starting in 1969 as a student with Perkins Engines. After completing a PhD at Imperial College, London in 1980 he subsequently worked for AVL in Graz, Austria, Ricardo Consulting Engineers and CD-adapco (now a division of Siemens) developing and applying Computational Fluid Dynamics software to IC engines before retiring in 2015. Since retiring, he spends his time restoring vintage motorcycles.

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