B18A1 VS B18B1
not much really the first thing you will notice is the valve cover is different. the redline in the b18b1 is higher than the b18a1. the b18b1 has a little more power also. they are both non-vtec since they are not the c1 and c5 engines. i think the bore and stroke on the b18a1 and b18b1 are the same not sure can look into that though.




