fatty chris

does anyone know if you can replace the f22b with a newer f23? i ask because it seems the newer f23 is cheaper than the f22 and i need a new engine.

alkoholikwun

f23 is obd-2 = complicated wiring. grab the jdm f22b (dohc non-vtec), definitely an upgrade and very inexpensive.

fatty chris

the car has the f22 vtech in it now. how is switching to non vtech an upgrade? from what i've read you can replace the f23 vtech in the newer cars with the older f22 vtech, you just have to swap the oil pump housing and t-belt cover. i just was not sure if you could go the other way and swap the newer f23 vtech engine into the older car that has the f22 vtech in it already.

Fireman.142

No offence, but maybe you should try helping with what he WANTS and get your facts straight before you cost someone a lot more money than is necessary.
No you don't need to change it to OBD2, its a major headache, OBD1 will work just as well. The f23 block is a cheaper better choice in my opinion and is very easy to swap into the car. Everything bolts up, tranny and all. You need to swap the dizzy, egr valve, exhaust manifold, fuel rail, injectors, and look into getting an IAC valve adapter plate. I can help with what ever problems you run into on this swap because I personally did this swap by my self into a 94 accord lx and it is awsome, pulls hard. Seeing how you have a vtec car, you can just hook everything right up, no worries about another ECU.

fatty chris

thanx for the info. could i use the intake plenum off the f22 instead of getting an adapter for the iac? just trying to keep cost down. fixing it for my mom. i can get a f23 vtech for half the cost of a f22 vtech so if i can make it work i will go that route.

Fireman.142

No prob. I tried to swap the plenum off of the f22 for the iac valve but the f22 plenum is smaller and doesn't fit right. When you get the motor in, what you need to do is block the passages off for the iacv at first till you get the adapter plate if you even want to spend the $50 for it. All the iacv does is adjust the idle to keep it the same the whole time, for example if the ac is on, it will adjust the idle to keep it the same not let it drop lower under the load. Anyway, I used some of the extra rubber hose from the f22 to block off the passages for later use and adjusted the idle with the fuel air mixture screw thats on the TB. Be sure to use the wiring harness off of the f22. Good luck man.

macmoney

I have a 98 lx accord and it has a f23 swap in it car runs good but the vtech dont turn on how do i get it to turn on what do i need??

GhostAccord

Is your check engine light on? If it is have the ECU scanned for codes and go from there!

Ardemia

Seems like that is the most straight forward and inexpensive upgrade you can do to get VTEC if you have the regular F22B. Whats the wiring like if you're going from an OBD2 F22B(97 Accord LX) to an OBD2 F23? I've only heard about issues when going from one OBD series to another, or using a non OBD engine in an OBD car. Also, isn't it possible to convert by using an F23 head on an F22 block? Just trying to figure out my options for whenever that cranky transmission finally gives up.

GhostAccord

So what are the chances that two new members make there first posts in a 6 year old thread?

Obviously pretty good!


If they are both OBD2 the only issue is the F23 uses a three wire IAC where the 96/97 F22B1 only uses a 2 wire IAC valve. they make adapter plates so that you can mount the 2 wire IAC on the F23 intake manifold. And you will obviously need to use the F23 ECU and add wires for the VTEC solenoid.

Yes you can swap the F23 head onto the F22B2/1 block. If you have the non VTEC F22B2 block you will have to remove the oil control orifice to allow for proper oil flow into the VTEC head. The orifice is found in the blocks deck surface, in between the No.2 and No.3 cylinders.

pablo_escobar

I swapped 1 into my 92 cb7 no problems, I have a P75 that I mapped to F23A1

pablo_escobar

My swap went just fine into a 92 cb7 non vtec obd1, obd1 dizzy fit, just had to run 1 vtec wire with a p75 ecu remapped to f23a1 and added vtec. Jdm f23a1 has no oil pressure switch. Of course I had an f22b harness in my car

Tyrese Johnson

Geo Jimerson

I wanna do this swap too in my 97 accord what would I need for that f22 obd2 to f23 obd2 I could just get motor harness and eco right and it would drop right in

Cory Barnes

Im wanting to swap a f23 into my 92 cb7 Accord what all will I need to make it happen? Can I use my stock transmission?

Tristenaw

hi I was wondering if you could help me with an f23 swap into my 92 Honda Accord I know the cb7 and cd5’s were similar until obd2 was introduced I blew the motor in me 92 and have the opportunity to buy an f23 out of a 99 for next to nothing. I’m not looking for performance as it wilL just be a daily work car Any help would be greatly appreciated thanks in advance

CASPER YOUNG

I was wondering the same thing. As far as I can tell it looks like it'll bolt right in. I want to do the same for my 91 LX.

Michaelscot9

Did you ever manage to do the swap? I'm in the middle of one right now and have some questions.

CASPER YOUNG

I had some piston cylinder issues so just bored mine over. But after spending over $1500 on a complete rebuild I noticed the 2300cc engine was being advertised at around $500 for a complete (used and possibly needing some work) engine. From what I've seen the bolt patterns should be the same. If not I've worked in a junk yard long enough to know how to adapt motor mounts. Any problematical issues would be in the wiring or the brain. I'd suppose you'd need to swap the brain out for one that came from at least a 92 to 96 model that had a 2300. Think Prelude.

Fitz Williams

iTrader: (1)

Up through 95 they were OBDI. 96 and up were OBDII. The ECU's would be very different.

CASPER YOUNG

You could be surprised. Compare the engine harness (wiring) for the 91 and 92 Accord.

Babwbvdhdudj

Babwbvdhdudj

did you ever get it done?