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Hi,
I have a 1992 Prelude Si and since I don't know where to find the engine code on my motor and google is bringing up 2 different possibilites (F22 and H23A1) for 92-96 Si's, I am a bit stumped. Here is a pic of the motor..
Looks like an H23. If you look to the left of your radiator hose by the starter you will see and engine code. Also, the code is in your VIN. I have a 92 Si had a H23 non-vtec swaped in a H22 vtec