Talk:Nissan CA engine

 CA's and RB's are NOT related other than both being Datsun/Nissan engines. If they were the same the crankcase would just be a 6 cylinder version of the 4. The sump split line and bearing caps are significant differences that show they came from completely different design teams.

CA has no crankcase skirt. The crankcase sides end at the main bearing split. The main bearing caps hang below the crankcase and fit in a shallow register. It is derived from the E15. For the CA they cleaned up the crankcase by removing the E series jack shaft, which was all that was left of the A series OHV cam. http://n12turbo.com/cars/dave/03_10_03/DSC08240.JPG http://www.autozone.com/images/cds/gif/large/0900823d80131ae3.gif http://www.autozone.com/images/cds/gif/large/0900823d80131ae4.gif

RB has a deep skirt crankcase (same as I6 L20 and S20) that extends below the main bearing split line. The main bearing caps fit tightly in a deep recess. http://www.autozone.com/images/cds/gif/large/0900823d801d13f5.gif ~