ive spent almost 3 hours this morning at work (real busy,right?) reading page after page after page on the f22/h22 hybrid. in my readings there were only a couple of threads that had some info specifically on the f22 and what was needed to complete the swap, though it didnt seem complete.

pirate,prelittleude and another dude(cant remember his name) were the gods at this stuff...insane what they did..i love it.

so, what im asking is...

what does someone w/a f22 block need, including wiring and whatnot to be able to install an h22 head? a list of parts would be cool. im looking for something condensed. and this is NA, no turbo's.

also..what to expect? if you put the f22/h22 together NA trim, what are you going to get as far as power/torque? minimal gains? enough to be worth it, aside from having a un-deniable cool factor?
i read that its best to do this only if your going to run a turbo. that an accurate statement?

i want to be flamed and pple saying "do research" blah blah. i did. theres not alot of the net about this but theres ALOT ALOT ALOT in a few forums (like 100 pages or so??). im just thinking that it would be very cool and helpful to have a thread dedicated to whats needed to complete the swap w/out it being an on going process of someone in the middle of doin it..

you guys have been very helpful and knowledgable in the threads ive read and im thinkin you can help some very interested pple by condesing some info here.
thanks

 

I agree with you that those guys are honda gods. Seeing as how they have the knowledge and experience I'd say your best bet is email or PM those guys directly. I would agree with you that 90% of those threads consist of nothing more than "looks awesome" or "that will never work." Its hard to extract any usable data. That's my .02, get ahold of them and go from there...maybe even post what you learn from them!

 

I may be able to help you out. I was one of the few inspired by this and completed the H23/F22 swap.

You will need a few parts. Most of the swap for the H22 head is the same as the H23 the only difference is the H22 water pump is used with the H22 head.

The H23 head uses the F22 water pump.

Both use the H22/H23 lower timing gear.

The H23/H22 water line on the backside of the block is shorter than the F22. I rigged mine up and have not had a leak. All you need to do is cut a about an inch out of the middle of the pipe and connect it with rubber hose and clamps or weld it.

Change a few sensors. I did the h23 head swap and used the accord ECU for now.I used the Accord wire harness, but for an H22 swap you will need to add a knock sensor and vire for Vtec.

You will need to fill one of the dead drain holes in the head and drill out the rivets in the F23 head gasket.

you will use the H23 timing belt. As for power steering, you are on your own I have not gotten to that yet but it wasn't a priority for me as I have 2 other daily drivers.

Do not expect a huge power increase with the H23 head on a stock block. you will need to rebuilt the bottom end for those gains, but if you are in the same situation I was in (bent F22 valves) then its a swap that could net some power through tuning. One of the best parts of the swap is the f22 doesn't share the FRM cylinder walls that the H22/H23 block does, it's iron so you can rebuild with forged internals with no problem.

Good luck
C

 

so the stock computer for the sohc vtec will work w/the dohc vtec? you said you needed to add a wire,but what wire is that?

a question, would it be easier to get rid of the vtec alltogether and just do a dohc swap w/out the vtec? i cant think of the year h22..sorry(early 90's right?).
i would think it would be a lil easier but would hte power difference between the dohc vtec be much from the dohc w/out vtec?

what would have to be swapped out w/the puter. or do you not know.

OR, since i dont know enough abotu this stuff just not even worry abou it? <chuckles>?

thanks for the help though. i do appreciate it!

 

if im not mistaken there was a guy workin on this recently (sometime since december when i joined) that had a HUGE long thread on this. I just can't remember who it was. If you could find that it had a wealth of info on it.

Good luck

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dmurphy2k3 &raquo;</TD></TR><TR><TD CLASS="quote">if im not mistaken there was a guy workin on this recently (sometime since december when i joined) that had a HUGE long thread on this. I just can't remember who it was. If you could find that it had a wealth of info on it.

Good luck </TD></TR></TABLE>

Yeah, he already mentioned that he's read through it.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mac_24_seven &raquo;</TD></TR><TR><TD CLASS="quote">ive spent almost 3 hours this morning at work (real busy,right?) reading page after page after page on the f22/h22 hybrid. in my readings there were only a couple of threads that had some info specifically on the f22 and what was needed to complete the swap, though it didnt seem complete.

pirate,prelittleude and another dude(cant remember his name) were the gods at this stuff...insane what they did..i love it.
</TD></TR></TABLE>

 

*hammers on head*

 

&lt;chuckles&gt; its ok. i know most pple just ask questions and w/out looking. its just the threads are SOOOO huge on this topic. just wanted a condensed version of it thats all.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mac_24_seven &raquo;</TD></TR><TR><TD CLASS="quote">so the stock computer for the sohc vtec will work w/the dohc vtec? you said you needed to add a wire,but what wire is that? </TD></TR></TABLE>

I'm not sure about your Accord ECU it may cause lean conditions since the fuel maps are for the accord. As for the wire that needs to be added, you need a wire that will run to the Vtec solenoid to activate Vtec at the given R.P.M.

My suggestion would be to search on Accord H22 swaps. Most of the sensors are in the head which is where you will be working. You will need to know alot more about what you are doing before you even attempt to do this. ex: what order and how to break loose the head studs, how much torque to reinstall... things like that.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mac_24_seven &raquo;</TD></TR><TR><TD CLASS="quote"> OR, since i dont know enough abotu this stuff just not even worry abou it? &lt;chuckles&gt;? </TD></TR></TABLE>

I would advise you do a lot of research. I'm not an authority on auto mechanics however most of what I've learned, I've learned over the years. I wouldn't read a thread on this site and jump right into a major overhaul without guidance and ALOT of information. Have someone there who knows what they are doing.

If this is your daily driver, I would suggest you take a few days of vacation from work before hand to make sure you have adequate time to complete the swap. Plan for the worst and hope for the best.

That will save you lots of headaches. I will also say that unless you have the parts laying around and or a lot of free time you may not want to mess with this. You will not see the gains these guys saw without lots of time and most of all ability to track down parts quickly. If you can, buy the H22/H23 altogether and call it a day.

Sorry to hijack your thread, but I've seen too many people want to get involved with something like this and have no connections. Without them, they end up paying $$$ out of pocket for what someone with hook ups gets dirt cheap or even free. I don't mean to discourage you from doing this, I just want you to be aware of the problems that can arise if you don't plan ahead.

Again I say Good luck,

C

 

I have read about all these kinds of hybrids myself, but one thing always seems rather uncanny about the whole thing. If a F22 relines at approximately 6800 rpm and an H22 redlines at 8200 where would you want the Vtech to kick in? Of course I ask that assuming that the pistion speeds are the limiting factor of the F22's redline, but I guess it could be float in the valvetrain. So call me out if I'm ignorant. However, if my assumtion is correct, how would you set up the Vtech timeing for the hybrid bastard child?

 

Well i personally plan on doing this myself just the same... i'm going to use all H22 internals (crank, rods etc...) and throw on the H22 head onto my F22A1.... i was actually just lookin at some stuff today, heres the thread that prelittlelude wrote up... https://honda-tech.com/zerothread?id=776837 crazy awesome amounts of excelent info.. i bookmarked it to use when i do my swap, of course i have a separate engine and will be puttin in all new aftermarket goodies as well as turboing so ill be using a different setup than you as well as ill be able to deal w/ the type of high rpm redline Absent was talking about... and on that note, you would need to tune the engine and ecu you use prefferably on a dyno in order to fegure the best VTEC engagement point.... a stand alone computer is highly reecomended just as prelittlelude used the AEM EMS.... at 1st i think you can 1 of a few chipped honda ecus just to get a descent vbaseline, but once you want to really start tweakin, stand alone all the way.... i'm going to be savin up for a whille myself before it gets done, but im starting to buy parts already.... i might just throw a stokk H22 head on the stokk F22 blokk 4 now just to fukk around with it, but i will still build it up once i do save the $$... goods lukk if you do do it and like many have stated, make sure you do PLENTY of research and hgave a few ppl to call on and prefferably be right by your side who know their ****....