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View Full Version : What is the difference between F22A1 vs. F22A4



Asiandude03
02-23-2004, 11:05 AM
What is the difference between these two engines? F22A1 and the F22A4? Beside the torque difference.

ridin90accord
02-23-2004, 03:08 PM
about 10 hp and headers and im not positive what else but some other minor ones

Asiandude03
02-24-2004, 11:02 AM
Is the valves different? Or the Bottom haft of the engine is different? I mean if the two engine blocks are the same, why would it have a different engine code? I went to honda and they were trying to sell me a F22A1 block. But I told them I had an EX and the EX block is the F22A4.

myaccord8urpos
02-24-2004, 11:32 AM
Blocks are the same, head is sligtly different as for the f22a6. Its a bit more free-rflowing. ecu's have different air/fuel ratios, Also the exhaust manifold on the a4 and a6 motors are 4-2-1. a1 motors is 4-1. Im sure im leaving something out. An f22 block is an f22 block unless its a f22b vtec block (has extra oil passages). I have an f22a1 motor sitting in my garage. first come first serve. I havent pulled the head off and checked the internals (has 116K on the motor)

ridin90accord
02-24-2004, 11:58 AM
how much and how much for the O2 sensor too... my accord is just sitting right now

Asiandude03
02-24-2004, 12:19 PM
How much for your whole engine? Are you selling the ECU also?

myaccord8urpos
02-24-2004, 12:50 PM
The O2 sensor is in my h22. I'll give the motor and ecu away for 100 bucks. Its collecting dust where I (used to park before this heaping turd of an anchor laid there) park, lol. The transmission is however bad, i sort of disassembled the distributor cover (not the cap, the little plastic cover that sits behind the rotor) too looking for a screw. The wiring harness is also on my h22 but if you just swapping motors you should have the harness and distributor you need anyhow. I'll give away the tranny too (2nd and 3rd gear are, in a word, FUCKED) Arrange shipping and 100 o.b.o. and shes yours. Also needs spark plug wires for an external coil and a valve cover seal with the spark plug hole seals too (leaked oil into the spark plug wells.)

Asiandude03
03-02-2004, 01:54 AM
Anything different between the ECU of the F22A1, F22A4, F22A6 beside the speed limiter?

myaccord8urpos
03-02-2004, 06:21 AM
I think the a6 ecu has a sharper fuel curve

Asiandude03
03-06-2004, 05:29 AM
Is the compression ratio the same on all the engines? What about the Valves?

myaccord8urpos
03-06-2004, 07:45 AM
The compression ratio is the same for all f22a motors, im not sure about f22b's. They're probably the same. The valvetrain is slightly different on the f22b1 vtec motor(2nd lobe for vtec profile on the cam, also location of the spark plugs is towards the front of the head for f22b's). The head design has a increased flow on the f22a6 head though but the valvetrain itself is still the same. All f series are pretty similar, just minor changes.

Asiandude03
03-08-2004, 12:57 AM
Is there a big different from the F23? from the F22 beside the 2.4L difference?

Kristyle05
03-21-2004, 07:24 PM
The O2 sensor is in my h22. I'll give the motor and ecu away for 100 bucks. Its collecting dust where I (used to park before this heaping turd of an anchor laid there) park, lol. The transmission is however bad, i sort of disassembled the distributor cover (not the cap, the little plastic cover that sits behind the rotor) too looking for a screw. The wiring harness is also on my h22 but if you just swapping motors you should have the harness and distributor you need anyhow. I'll give away the tranny too (2nd and 3rd gear are, in a word, FUCKED) Arrange shipping and 100 o.b.o. and shes yours. Also needs spark plug wires for an external coil and a valve cover seal with the spark plug hole seals too (leaked oil into the spark plug wells.)


ok im new to cars and im 16 excuse me for askin but what the hell is an o2 sensor. Also did u say that u used ur ecu from the f22a to put on h22?

Asiandude03
03-22-2004, 12:29 AM
O2 sensor tells the your computer "ECU" how much air to let in your engine to mix with your fuel. Also you can not use a F22 ECU on a H22. Do you have any other questions? Its ok that you are 16 at least you are trying to learn about cars. And Where are you from?

Kristyle05
03-24-2004, 04:17 PM
i live in chicago but im movin this summer back to cali. Sacramento to be precise. any way thnx for answerin my question. i hope to learn alot more about cars before i acctually get one. the 96 that it says i have in my profile is one of my friends that we work on we learn as we go. i hope to get a 4th gen.

Asiandude03
03-24-2004, 10:34 PM
Yea hit me up when you get to cali. I am always up in Sacramento. I will help you out with getting your car or if you need any help on your 4th gen. Good luck on finding one.

Kristyle05
03-25-2004, 05:25 PM
alright ill be sure to hit u up when i get there i should be movin in july.
do u know where riop linda is cuz thats where im movin too

Asiandude03
03-26-2004, 01:38 AM
No what part of Sacramento is that? Do you know what section of Sac that is?

Kristyle05
03-26-2004, 01:47 PM
i think its just west of sac but im not completly sure

Asiandude03
03-28-2004, 01:36 AM
I am usually in West Sacramento all the time. At least 4 times a week. I live 45 min away from Sacramento.

primo93
04-15-2004, 12:49 PM
lemme ask ya this. i have a 93 ex 10nth anniv. edition. if the ex's all came with the f22a4 engines, why do all the f@#%in' parts(like the sticker on the timing cover-looks like barcode-for example)say f22a1?!? this is driving me nuts!

myaccord8urpos
04-15-2004, 09:48 PM
its possible that you actually do have an f22a1 motor, possibly blew the f22a6 (which should be in a 93 ex stock). How many miles are on the car? Also, the only positive way to tell what motor it is is to look at the imprinted engine code on the left side of the block

halfros honda
04-16-2004, 08:55 AM
yeh myaccord8urpos is right check the block near the tranny dipstick but up a lil' if it's a lil dirty just wipe it it's stamped clearly on the block

Asiandude03
04-17-2004, 01:52 AM
Like he said check the stamp on the engine block. It should be next to the cover to check the timing of your engine. If you don't have a clue what that is or what it looks like. It looks like a rubber clothes hanger shape. either you engine is a F22A1 or F22A4 or F22A6. If you don't see the timing cover plug then it should be close to your exhaust headers. it is left the the headers.