It was the 1st 4B1 engine to become introduced, and it absolutely was set up during the two.four L product from the Outlander plus the Delica D:5. The bore is 2mm broader than 4B10 and 4B11, rendering it a lengthy-stroke engine by using a very long stroke. The 4B11 and 4B10 are based on this engine, with decreased bore and stroke.Quote Publi