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Old 05-30-2011, 08:36 PM
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Default Engine swap questions

Hello, as of tonight, I am now a proud owner of a 94 accord LX wagon. Unfortunately, it has the automatic trans, and at this time, I don't think I'll be doing a auto to manual swap.

HOWEVER!! The engine in the car is blown . My question pertains to finding out which engines easily swap in.

I know that the it has a F22XX. But will the F23 from the 98-01 swap in easily? I've done countless B series swaps that involved going from OBD1 to OBD2 engines or vice versa...but I know accord/prelude distributor/fuel sensors timing sensors are different.

IDK if the crank sensor is on the oil pump on this engine. Or if there's a difference in the crank sensors between the years of cars. I can't swap over the oil pump from the old engine since it was run low on oil and the cam snapped in half (sounds crazy, but that's what I was told...and the cam is DEFINITELY broken). I don't want to risk installing a bad pump onto the new engine.

Please let me know if the 98-01 engines easily swap in or if I will have to change a bunch of wiring or the oil pump. I'm looking for just a simple stock SOHC swap. Nothing fancy. Not looking to spend a buncha money on this. So unfortunately, the H22/23 is out!

The F23A4 ULEV engines seem to be cheaper than the rest. I don't care that it's ULEV. I won't really care if it makes a tiny bit less power. I honestly don't even care that the VTEC solenoid won't be hooked up to anything and will be inactive. I just want an easy drop in swap for cheap so I can get this thing rolling and road trip ready!!

I am also open to the older models of F series engines from the 90-93 accords.

Thanks in advance for any help.
Old 05-30-2011, 09:11 PM
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Default Re: Engine swap questions

Check the FAQ's

All the OBD1 F22A1-6 (90-93) will drop in without issue 94-95 F22B1 VTEC or F22B2 non VTEC also no issues. Except no VTE without wiring it in and getting a P0A ECU. Then there are the 3 Japanese F22Bs - 1. SOHC VTEC, 2. SOHC Non VTEC & 3. DOHC Non VETC as well.

Then you can move on to the H series engines. The H22A-4 and H23A1 will drop in relatively easily. All F/H series engines and transmissions are interchangeable. However, the F20C &/or F22C from the S200 are exceptions to that interchangeable rule.

The K series is starting to get some support but it's still very expensive and requires some slight mods and a new trans as well.

As for your question about sensors. The OBD1 engines have the CKP & TDC in the distributor and the OBD2 96+ F/H series are on the oil pump housing. 99.9% of the JDM engines being sold in the US are the OBD1 style.
Old 05-30-2011, 09:36 PM
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Default Re: Engine swap questions

Thanks for the reply! I think I might have found a F22B2 from a 95 accord at a local yard. I'm gonna see about picking it up tomorrow. If I end up not getting that engine, youre information will have helped greatly.

Are you saying that the F23 will swap right in without issue? I'm taking it from what I've been reading in the past half hour that I need the OBD1 injectors, alternator, and EGR valve and just re-use the OBD1 distributor since it has the TDC and CKP in it? Anything else? Seems like the F23 is cheaper. I know that I won't have VTEC because I probably won't get around to wiring it or using a different ECU...but it feels good to have the option to do so when I'm done being such a lazy jerk .

P.S., I looked at the FAQ, but unfortunately didn't know exactly what to search for. I'm green on this whole Accord thing lol.
Old 05-30-2011, 09:50 PM
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Default Re: Engine swap questions

Ok...so now I'm reading that for the F23 swap, you'll need to reuse the F22 manifolds and sensors on the manifolds. You also need the OBD1 distributor and injectors and alternator. I then have the option to wire in VTEC later using a 94-95 EX computer.

Does that sound correct?
Old 05-31-2011, 02:07 AM
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Default Re: Engine swap questions

The manual swap is easy as a clutch change.

I can get you every part except for the trans because of shipping.

You should boost the F or go H.


As fir the F23.. just find a 2.3 liter acura cl.. take everything and be done with it.
Old 05-31-2011, 06:27 AM
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Default Re: Engine swap questions

I'm sorry, but that doesn't answer my question.

I don't want to boost anything. I dont want a H series. I read about work involved with the auto to manual swap. Like I said in the first post: pass on the H series. Pass on the auto to manual swap.

My question is about what I need to make the F23 sohc 98-01 Accord engine fit in my 94 LX wagon. The F23s are cheaper...this is the only reason I'm considering the swap.

I have 2 cars that im constantly modding. The wagon is just going to stay a normal car (hopefully).
Old 05-31-2011, 06:43 AM
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Default Re: Engine swap questions

Swap in the F23A5 SOHC Non VTEC long block and keep the F22B2 intake and exhaust. Would be the easiest F23 swap. The F23A5 can be found in the 98-02 Accord DX and the 02 Accord LX VP. Or if you want you can swap the F23 and keep it's intake. However, you will require an adapter in order to run the F22B2 2 wire IACV. Your current P0B ECU uses a 2 wire IAC and the F23 IM uses a 3 wire IACV. They aren't the same physical configuration ether so they don't swap without the adapter plate.
Old 05-31-2011, 07:12 AM
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Default Re: Engine swap questions

Im putting a 92-96 f20b in a 93 accord, but the rear L engine mount bracket is not the same. Can i use a 92-96 prelude si h23 rear engine mount bracket? Will it fit in a 93 accord with no problems??
Old 05-31-2011, 07:54 AM
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Default Re: Engine swap questions

I just bought a local F22B2 from a wrecking yard for $480 delivered. So I guess my troubles are over. Hopefully someone else can use this thread for info though.

Thanks guys.
Old 10-16-2012, 04:51 PM
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Default Re: Engine swap questions

I plan to do just this (in a CL) - although the block I have is an f22. Will I run into any problems (especially wiring) or I should be ok with f23 vtec head and f22 block with boost?

Originally Posted by Balwin
You should boost the F or go H.


As fir the F23.. just find a 2.3 liter acura cl.. take everything and be done with it.
Old 10-16-2012, 04:59 PM
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Default Re: Engine swap questions

Originally Posted by KPDSM
I plan to do just this (in a CL) - although the block I have is an f22. Will I run into any problems (especially wiring) or I should be ok with f23 vtec head and f22 block with boost?
I've got a f23 vtec head and solenoid. No cam but still a GOOD useable head.
Old 10-16-2012, 08:02 PM
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Default Re: Engine swap questions

check messages

Originally Posted by StreetLimitz89
I've got a f23 vtec head and solenoid. No cam but still a GOOD useable head.
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