Douglasmotorcycles.net

General => Douglas Motorcycles - General Discussion => Topic started by: terry mortimer on 13 Feb 2016 at 13:15

Title: compression testing
Post by: terry mortimer on 13 Feb 2016 at 13:15
Does "anyone" know the psi compression figures of a MK3 engine when new? What would be the lowest acceptable figures be on a well used engine? My engine is showing 50 and 55 psi for each cylinder.