F22a3 EDM engine Thread

[Final 204]

~~ THE F22A3 sohc 150hp EDM stock engine DisCussion thread ~~

ok, so as some of us know, Many EDM(european domestic market) accords have 150 HP sohc F22A3 engines, Stock.

now i created this Thread to Devote Striclty to this Engine, i personally have a F22a6 (140hp stock), and i have some questions about these 150hp EDM engines


- What is Different about these EDM engines from lets say the USDM f22a6?

- where does the extra 10 HP come from? (IM?, Header? ECU ? Internal?)

- could the Intake Manifold, header and ecu be swaped from a F22a3 onto a USDM f22 and make it 150 hp?


i personally am very interested, i'd love to be able to upgrade my F22 to 150hp. there is no shortage of guys doing F22a6 IM/Head/ECU swaps, so why not get the extra 10hp from the F22a3 instead? .

and i'm thinking there is about 3 or 4 euro guys on here, maybe one of them would be interested in shipping A3' parts to some of us if these swaps would work

[ACC0RD22]

from what ive heard on other boards the extra hp is created by a higher compression ratio allowed by the higher octane gas (not by much, but higher) that is used in the rest of the world.

[Prez808]

I was thinking that, and also emissions standards are probably different.

[93accordexcoupe]

i didnt know the 90-91 came with an a6. i thought they came with the a4 in the ex and ex-r or something like that. idk the ex-r too well so i could be wrong tho

[patrik.johnson]

i used to have a list on all the specs on all the F22ax engines on my computer.
but no more(format c: ).
but things i remember was that the Internals was the same except pherhaps the camshaft.
the list did not show the duration or lift on any of the camshafts on the F22ax so i dont know.
i dont know about the athers f22ax but the f22a3 comes with a stock 4-2-1 header.

[patrik.johnson]

did a google and found some info
Accord, 2.2i,, 2156 cc, 1990-93, Engine Code F22A3,

Ignition data

Accord, 2.2i
Ignition system type: El-ecu
Ignition coil make/type: Hit/-
Supply voltage: 11 - Volts without ballast resistor
Primary resistance: 0.6-0.8 Ohms
Secondary resistance: 12900-19300 Ohms
Distributor make/type: Hit/-
Contact breaker gap/air: n / a mm
Dwell angle: n / a Deg
Ignition Timing - unleaded: 15 2/770 Deg eng/rpm (without vacuum)
Ignition Timing - leaded: n / a Deg eng/rpm (without vacuum)
Timing mark location: Flywheel
No 1 plug location: N/S/F
Firing Order: 1-3-4-2
Spark plug make: NGK
Spark plug type: ZFR6F-11
Electrode gap: 1.0-1.1 mm

Fuel System

Accord, 2.2i
Fuel type: U Cat
Fuel pump type/pressure: Elec/2.4-2.8 bar
Engine idle speed: 770 50 rpm
Fast idle speed: n / a rpm
CO level at idle speed: 0.1 Max Vol %

Engine Data

Accord, 2.2i
Valve clearance - inlet: 0.24-0.28 c mm (cold)
Valve clearance - exhaust: 0.28-0.32 c mm (cold)
Compression pressure: 9.3-12.3 bar
Oil pressure: 3.4/3000 bar/eng/rpm
Radiator pressure cap: 0.88-1.23 bar/type
Drive belt 1 - size: PV/1038 KIB103 mm/type
Drive belt 2 - size: n / a mm/type

Electrical System

Accord, 2.2i
Alternator output: 80/2000 Amps/eng/rpm
Regulated output: 13.9-15.1 Volts
Battery: 12/65 V/Ah
Starter motor make/type: Bo/0 001 311 146

Other data

Accord, 2.2i
Clutch operation type: Hyd
Clutch adjustment: S/Adj. mm
Cambelt failure: Damage
Cambelt Part Number: 14400PT0004
Tyre pressures: 1.8(26)f 1.8(26)r bar (psi).

i think i may be wrong about the internals.
it seems that we got higher CR and mayby diffrent pistons but not sure.

[Final 204]

nice work doods, this thread is going the way i intended

[JaK FRoSTWhiTE]

It figures....High compression, equals high NOx emissions, which in
turns equals "Rejected" emissions sticker on your windshield.

[deevergote]

So that's why the 10:6 JDM H22 fails when the 10:1 USDM one passes, eh? And why there's a 10hp difference there? Maybe I'm jumping to conclusions here...

But yeah, I'm guessing the power difference is because of the compression and emissions controls. Many cars are underpowered in their US incarnations because of our emissions controls (yet I don't think any other country has the same smog problems... odd, eh?)

[patrik.johnson]

ive posted some pictures of one piston.
please take a look.
http://www.cb7tuner.com/vbb/forumdisplay.php?f=89

[gloryaccordy]

Why bother searching for F22A3 parts when you could just go aftermarket...a regrind, H22 crank and 11.0:1 piston/rod combo will do the job wayyy better, unless you just want the A3 parts. Good luck.

[patrik.johnson]

Why bother searching for aftermarket H22 crank and 11.0:1 piston/rod combo if you like in my case alredy got a f22a3.
ive just have my cylhead milled instead.