Got a 90 Honda Prelude SI, with a B21A1 enging. The engine has a lot of miles on it, so dont know what to do. So here is where i need some help. Will a B20A5 drop right in? Whats the difference between the two engines? Which has more power? Or is there an other b-series engine that would drop in with very few mods? I know they might be stupid questions but its just that ive been out of the scene for a while, so therefor i would really appreciate your help!!! THANX DANNY

 

this will only answer 1 of your questions, but it's a good link to have:

http://hondaswap.com/reference-mater...ne-list-29128/

 

thanx anything will help

 

anybody