To increase capacity, BL preferred increasing stroke, which added little to the cost of production. This resulted in a tall engine. It was not possible to slant the engine, because of the location of the fuel pump. Furthermore, the engine had to be "siamesed", that is, the water jacket was shared between pairs of cylinders. These factors contributed to overheating and oil burning in the Austin Maxi, and so the board decided to adopt the more reliable A and B- series engines for indigenous production. (Australia and South Africa continued with the E series.) However, the body had already been designed, so the Marina was forever cursed with a "full nappy" rear-end styling, needed to even the lines between the necessarily bloated front and the rear.