Thread: SOHC VTEC head
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Old 05-30-2003, 03:15 PM
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the SOHC VTEC head swap, commonly called "mini-me" is a very easy swap. Keep in mind, however, that you will also have to convert to MPFI, because your DX injection system (DPI) is very weak and not performance oriented.

As far as the head swap is concerned, however, unbolt your head off the block, remove a small oil squirter (bronze colored thing in the middle of the block, its a small circle with a hole in it, just pulls right out), bolt on the VTEC head and thats it. You'll have to find a way to activate VTEC, rpm activated switches, VTEC controllers, or OBD1 conversion are some of your options.

as for the MPFI conversion, you will need a 4thgen Si Intake manifold, throttle body, fuel injectors, fuel rail, and all sensors, basically a complete intake manifold assembly. A 5th gen manifold can be substituted, but some vacuum line and wiring changes must be made. if you are confident with your soldering skills and wiring skills, here is a small diagram.

enjoy VTEC.
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