The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => A7 & A10 Engine => Topic started by: Robthebluesguitarist on 29.12. 2014 16:10

Title: Marks on Primary side of crankcase
Post by: Robthebluesguitarist on 29.12. 2014 16:10

Stripping down my A7 Shooting Star Engine, on the Primary side Crankcase there is a marking 5.50+
Can anyone advise the significance of this please.