engene swap B20A3-B20A5

Asked by Feb 10, 2009 at 03:16 AM about the 1989 Honda Prelude

Question type: Car Customization

thinking about swappin my B20A3 for a B20A5 in my 89 prelude . what all do I need to get and change beside engine ? is there computer parts I need ?

2 Answers


A lot of electronics, wiring, fuel tank and pump and assorted relays and wires. Truth be told, you would be MUCH better off buying a 2.0Si or Si Prelude and then selling your S model. The swap is far too involved for so little increase in performance (35hp increase). But if you still want to do it, you can look into it at prelude3g dot com under 'engine' tab. - Prelude owner

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a 1990 Honda Prelude si 5 speed will not go in reverse

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