Figure 89. — Intake-valve side of engine of 1912 Simplex. A larger engine, 

 with a 6 1/10- by 5 3/4-inch bore and stroke, was also available for this 

 automobile. 



Figure 90. — Exhaust-valve side of engine of 1912 Simplex. The petcocks 

 were for priming to facilitate starting in cold weather. 



