Originally Posted by
WishIHadaSilvia
Yeah I believe no mounts are needed for a H22 swap in an accord that came with a F22/F23 so H series mounts would allow you to swap a F series motor into your civic.
Might I suggest checking out the F20B and F22B swaps. That's a 2.0L VTEC Motor - bad ass swap no one does, and a duel cam non VTEC 2.2L motor that came in JDM Preludes. The swap can be had for fairly cheap and if I remember correctly it basically plugs into the accord, so you'd have the same wiring problems as a F23.
I don't know much about F23s, I recall them being kind of worthless - even more so then a single cam F22.
F20B civic swap would be out of control though. That motor supposedly hits VTEC like no other honda motor and revs to like 8.5-9K stock or something stupid like that. It's a destroked H22, so it has an even better bore:stroke ratio then a B16. It's like a bad ass, bored out, B16 - it does weigh more though.
Isn't the F20B redline 7200 stock?
Looks like a de-bored and de-stroked H22 (87mm bore and 90.7mm stroke for the H22), with none of the benefits.
It looks like it has a 85mm bore and 88mm stroke, which is undersquare and doesn't make it better than a B16 (which is a nice oversquare 81mm bore and 77mm stroke). The rod to stroke ratio isn't that great in the B20B either, at around 1.45:1, which is horrible for high RPM compared to the B16 at 1.74:1 (and even the H22a has a better rod/stroke ratio of 1.58:1, as does the B19C/C5). Common rule is that 1.5:1 to 2:1 rod to stroke is good for high RPM. Nice 11:0:1 compression ratio though, so that's good. You could change the rods and pistons and get a much better rod to stroke ratio, like maybe as high as 1.65:1 (that's an estimation, I have no idea what would actually be possible with this engine) but that's not significantly better than a stock H22.
I would imagine that the small power difference between that and an H22 is down to the higher compression of the F20B.
So it's undersquare, and has a poor rod to stroke ratio, so what's so good about it compared to a H22? It doesn't have the geometry of a high RPM engine, that's for sure.
I guess my only other question is whether it has balance shafts or not... (I just found out they do; so same as all Honda engines over 2L. Remove those bitches)