Somewhere I saw a thread about the Ha-23 engine (Kasei 23) but I can't seem to locate it even doing the advance search grrrr someone happen to know where it is
Do you mean the Ha-32 instead of the Ha-23? The Kasei 23 is the MK4R Ha-32. The only place that it might be is the Japanese Aircraft Engines thread (sticky thread).
Maybe someone can clarify that for me lol everywhere I look I see Kasei 23a (MK4R-A) and have found one reference for it as the 32. The engine is for the J2M3 Raiden "Jack"