[CivicRacerX]

Your question is a little confusing. You can't just arbitrarily interchange the engine code with the actual displacement. Changing to a crank, rods, pistons and rings from a 1.8L engine won't magically make your engine 1.8L if it's 1.6L now. You said they used a 1.8L block, but I can't imagine that just changing over to the other (1.8L) internals from you 1.6L parts would change the displacement that much. I think that would require some pretty radical differences for the pistons and rods, particularly considering that the pistons would have to be the same diameter, or at the very least damn close, unless your 1.6L pistons have some ridiculously thick rings on them. Did they use the same block but just drill the displacement smaller? If so, then you could theoretically bore it out and get it up to 1.8L, I suppose. Anyway, hope that helps a little. Maybe you should get some of the details on your engine to clarify your question for us.