Quote Originally Posted by allmotoronly
the only F-series engine that will safely accept the H22A head is the F20B from the accord SiR and the Euro R (before the H22A Euro R). It comes stock with the same head as the JDM Prelude type S H22A head. Any other F-Series engine will need some modifications (almost like doing a LS/VTEC conversion on a B series) but the F series engines will never rev high enough in stock form to take advantage of a H22A head, which makes the extra power mainly above 6k rpm. The F series can only safely go to about 6500 rpm stock on a daily basis. Now if you are building this as a race engine that you plan on running at the strip, then I say go for it, but if you want something reliable to use as a DD or something like that, then I say to just buy a new engine. If you want to keep it F series, get a jdm F20B engine (make sure to get the ECU as well). It has 200hp and a 8k RPM redline, DOHC VTEC, and the same head as the jdm H22A type S/Accord Euro R. It pulls like a H22A, with only slightly less torque. They are also usually cheaper than a H22A because nobody knows what it is. Beau Gotti on here had a F20B in his prelude. Im not sure if he is still around, but if you know him or can find him, ask him about the F20B.

edit: another key advantage of the F20B is that it has iron sleeves, not FRM like the H22A, F20C, or C32A. FRM sleeves cannot be honed, bored, etc. You just have to get the engine resleeved. Iron sleeves can be bored or honed. B series engines have iron sleeves. You mentioned something about turboing the engine. FRM sleeves will only safely hold about 8psi or so. Iron sleeves will hold 12+psi.
pretty insightful post indeed:goojob: +1 for u sir