The Honda D17a1 and Honda D17a2 are two different types of Honda engines. Honda's D series engines were introduced in 1984 and finished production in 2005. Honda utilized them in a number of compact Honda models. While there are many differences between the D17a1 and D17a2, both engines employ a single overhead camshaft (SOHC) design.
The Honda D17a1 engine was produced for the 2001 Honda Civic DX/LX model. It has a 1,668 cc displacement and an output of 115 horsepower at 6,100 revolutions per minute and 110 foot-pounds of torque at 4500 rpm. It has a 9.5-to-1 compression ratio.
The Honda D17a2 engine was produced for the 2001 Honda Civic EX model. It displaces 1,668 cc and produces 127 horsepower at 6,300 revolutions per minute. Its torque is 114 foot-pounds at 4,400 rpm. Its compression ratio is 9.9-to-1.
The VTEC is a valve train system designed by Honda to improve the efficiency of the car's internal combustion engine. Only the D17a2 utilizes the VTEC valve train system.
