ok, ive got a 90 ls integra. i was going to build a new b18b and swap it in, but i was going to end up punching it out as far as it would go. i found a b20 longblock for 400 bucks and its obd2. the teg is obd0. the b20 is in a 97 crv thats auto and awd. the only thing i know about doing the swap is i need an obd2 intake manifold that will clear the integras hood. i need to know where i can get an engine harness and which computer to use so i can use my 5 speed and not have the lame maps that come with an auto ecu. any help with the swap is appreciated.

 

the easiest route is to just replace the B20 intake manifold, exhaust manifold, distributor, and injectors with the ones from your B18 and swap them all over. To use the B20's dizzy and injectors you'll have to at least convert to OBD1 using a OBD0-1 ECU adaptor, dizzy adaptor, and swap the injector plugs from your harness to some OBD2 plugs which wouldn't be a bad idea if you could find an OBD1 LS ECU. But for the time being the easy route would be just to swap everything over.

 

good info man. ill just do that until i get all parts needed to convert to obd1 and use the b20 stuff. any gains by doing that or should to stick with my b18 stuff on the b20?