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? 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. Oh yeah I got it from a Junk yard for cheap.

 

the B18b moter is 1834cc bore and stroke are diff. i don't know about the non-interference butt the rest is right the bore on the B18b is 87mm and stroke is 89mm i hope that has helped you!

 

I thought a b18b was 81mm bore? a b20 is 84mm. Anyway nobody has answered the question yet?