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General => Douglas Motorcycles - General Discussion => Topic started by: terry mortimer on 08 Feb 2016 at 14:20

Title: compression test figures on my 1949 MK3.
Post by: terry mortimer on 08 Feb 2016 at 14:20
Hi, Having nearly completed a full restoration rebuild on frame and running gear I wish to carry out compression checks on the engine before I install it back in the frame. What should the psi figures be and what would be an acceptable figure?