6 cylinder - 1st series Aug 1, 1925 - Dec 31, 1925
6 cylinder - 2nd series Jan 1, 1926 - July 31, 1926 The engine was increased to 224 CID with a bore and stroke of 3 1/4 x 4 1/2 the new rating was 60HP.
Eight-in-Line 1st series Aug 1, 1925 - Dec 31, 1925 2nd series Jan 1, 1926 - April 19, 1926.
Eight-in-Line 2nd series April 20, 1926 - July 31, 1926