20-02-2018, 12:18 PM
Looking at a 1950's Hepolite catalogue, the (flat piston head) MG Midget / Magna / Magnette pistons 1928 to 1935 were 57mm standard bore, 66mm piston length and 36mm compression height. The 1936 8.9 hp 939cc Midget / PB pistons were 60mm standard bore, 69.25mm piston length and 36mm compression height.