Originally Posted by brtecson
Not by much. The stock ka engine is as porky as hell. It has an iron block and weighs near 500lbs. Also, the engine is pushed back in the engine bay (towards the center of gravity), so a heavier engine wouldn't affect the f/r weight distribution as much.
Swapping an RB25DET into a 240SX supposedly adds 180 lbs to the car.
http://www.sportcompactcarweb.com/te...rid/index.html