Alright so i went to the junkyard yesterday and i saw a 90-91 prelude si sitting right next to a DA GS, now i saw in the prelude the engine is a B21, correct me if im wrong but it could be H21 but i searched and didn't see anything on it.

I think that the prelude engine is about 145 bhp, and the b18a1 is 130-140 depending on the year?

Well my question is would i be able to use the prelude engine to fit into a DA or just stick with the GS motor, and again not sure the years on them.

thanks in advance

 

Just stick with the B18a1.

 

From what ive heard on this site, the b20a1 b21a1 are pieces of ****. Someone posted two pics of the top of each block without the head on.They are completely diffrent inside.The prelude b20's are in no way the same as the newer integra b series, and the parts are not compatiable. They only thing they have in common is that little b stamped on its block. Dont waste your time or money on that bastard child motor.

 

alright thanks guys