h combo question

[CB7/KA8]

...Again, as mentioned, the best option is to get the H23A VTEC. It already has the 2.3L displacement, with factory-matched VTEC head. It's not really a "performance" motor, though. It's also OBD2, with no corresponding OBD1 ECU... so that would require a custom tune, or you'd run it improperly on a P13.

Actually, the H23A VTEC uses the H22 head. The only difference is that there is an oil passage in the block that operates the VTEC solenoid. Also, it's 87x95, whereas the H22 is 87x90.7, resulting in a lower redline. So, I think, if you remove the oil control orifice from the h23 block and put an H22 head on it you will have an H23 VTEC.