I have look at many different websites, carpoint.com says it is 1794cc and hybrid says 1834 which is the same as B18B. Who is right, and if it is different why? Bore or stroke? They also differ in Comp. Ratio carpoint's 10:1 to hybrid's 9.2:1? I am building the motor to a 2.0 turbo with 84mm sleaves, just wanted to know if the b18a and b18b cranks were different. Also is the B18a a non-interference motor? I just got one that skipped time and the top end looks good? It has new cams, water pump and timming belt. Looks like someone forgot to tighten the tensioner.

 

i know that the B18A is roughly an 1834cc, due to the longer stroke compared to the GSR crank. (ls crank has 2mm longer stroke)

i am not sure if the ls motor is an interference motor or not, because more things than compression can change that. i would treat it like it is, and clay the motor when you put it together to find out if pistons can hit valves if you have adjustable cam gears and high lift cams.

 

So the B18A and B18B are the same displacement then, correct?