jimakazi

I have a F22B SOHC non VTEC engine producing a humble 145ps @ 5,600rpm. and 20.4kgm @ 4600rpm [compression is 8.8]. This is fitted to a JDM 4WD Honda Odyssey which has an RA2 gearbox which I understand only can only fit to the F22B block.

I can get hold of a F22B DOHC engine out of a Prelude which produces 160ps @ 6000rpm and 20.5kgm @ 5000rpm [compression is 9.2]. I can also get the ECU, FI etc.

My question is this, would it be easier to do a head swap [with the DOHC FI and ECU, new head gasket etc, new cam belt], or replace the whole engine?

Given the current engine has slightly lower compression I guess that the head swap won't produce as much power as the engine swap.

RynoDyno312

I thought the f22 from a prelude was a SOHC and only made 140hp? You mean the h23? That one is a DOHC and makes 160 hp. Also, I think with some modification an H22 vtec head can be fitted to an f-series block, and the combination makes a great engine for a turbo, due to the low compression and iron sleeves of the f-series combined with the higher-flowing h22 head.

canis

the F22B witch your talking about is a SHOC, and the only other motor in the F-serise is the F20(b) i think, but its the DOHC, but you can put the H22A head on there and be fine or you could put the H23 head, but i think that you have to do something with the oil i dont remeber.. but yah its just as good and cheeper to get a F20 head and put it on...

sexyblack93lude

you guys are idiots the jdm f22b is dohc non vtec, and puts out 160hp i cant believe you guys have never heard of this engine

RynoDyno312

No need to call someone an idiot when the engine was never available in their country. As far as I know, the USDM Prelude never had a DOHC f-series engine.

ThE PiMpiN Co

are you sure that you have a f22b sohc motor? ive never heard of that. dude is right though that it is a dohc motor from japan... and it does put out 160hp. either way the block will be the same, the extra horsepower gain will come from the dual overhead cams instead of the single overhead cams... so in which case just doing the head swap would be fine for now... either the usdm h23 dohc head will fit on it nicely or a jdm f22b dohc head will too. if you wanted to make it vtec, you could slap on a h22 dohc vtec head, do some minor mods to the water pump pulleys and dremel out the headgasket and remove the oil orifice in the block and you got vtec!

jimakazi

Thanks.

Yep I've definately got an F22B SOHC non VTEC and it s in a JDM Honda Odyssey. The F22B DOHC is readily avaialble here [NZ] out of the NZ new 91-96 Prelude Si.

I'll give the head swap a go [I'll buy a complete engine] and then sell the new engine with the old head if it's sucessful.

As NZ imports used JDM cars for sale as used cars, JDM Honda engines are readily available - for instance a complete H22A engine would cost about NZ $1000. The F22B DOHC will cost about $500.

By the way I've started a page in the honda-tech knowlege base on JDM engines starting with the F18B and working up. I've made a start but it will take a while. I'm including info on different variations on each basic block.

sexyblack93lude

mabie you should read up some more on honda-tech or some japanese mags to increase your already "jdm" knowledge no offense man but just think before you post alright

jimakazi

sexyblack93lud, who are are you suggesting increase their JDM knowledge?

SwissChEz82

The F22B is a USDM SOHC and the a JDM DOHC there is also a F20B DOHC in Japan. The prelude engine you're refering to is the B20a. The 92-96 had either the H22a or the H23a, deppending on the model. The Si had the H22 DOHC VTEC while the others had the H23 DOHC non-VTEC.

jimakazi

The engine WHO is referring to is an B20a?

F20B [JDM]
Capacity 1997 cc Bore x Stroke[mm] 85.0 x 88

There are both DOHC VTEC and SOHC VTEC versions of this engine. The DOHC has 2 states of tune. The engine as fitted to the 1997/2001 Accord Sedan SIR-T has 200ps @ 7200rpm, the engine as fitted to the 1997/2000 Accord Sedan SIR has 180ps @ 7000rpm. The SOHC version as fitted to the 1997/2001 Accord Sedan VTS 2.0 has 150ps @ 6000rpm. The 4WD and LEV versions have less power again.

F22B
Capacity 2156cc Bore x Stroke[mm] 85 x 95 corrected

There are DOHC non VTEC & SOHC non VTEC and SOHC VTEC versions of this engine. The DOHC version as fitted to the Prelude Si produces 160ps @ 6000rpm and 20.5kgm @ 5,200.

There is also an F18B
Capacity 1849 cc Bore x Stroke[mm] 85.0 x 81.5


Modified by jimakazi at 4:09 PM 6/6/2005


Modified by jimakazi at 4:09 PM 6/6/2005


Modified by jimakazi at 2:45 AM 6/13/2005

Eurorider1

didnt they have both a f22b which is a single non vtec motor from japan and also an f22b1 or something that is a 94+ accord single over head cam? i think that is correct im not sure i no i blew up a f22a6 and that was the best fun i've had with a honda motor..

O3DigitalBath

its really up to you man, the f22b (dohc) if I remember right is just pretty much a f22b with a h23 head on it. it can be done preatty easlily but also with teh costs of the f22b's being in so low still it might be easiler to just buy that.

i'm not sure about the differences in the bottom end, honestly you would get more help in the accord section of this site or on an accord baised board....cb7tuner, hondasociety, accordinglydone... any of those

Sam1am26

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jimakazi &raquo;</TD></TR><TR><TD CLASS="quote">The engine WHO is referring to is an B20a?

F20B [JDM]
Capacity 1997 cc Bore x Stroke[mm] 85.0 x 88

There are both DOHC VTEC and SOHC VTEC versions of this engine. The DOHC has 2 states of tune. The engine as fitted to the 1997/2001 Accord Sedan SIR-T has 200ps @ 7200rpm, the engine as fitted to the 1997/2000 Accord Sedan SIR has 180ps @ 7000rpm. The SOHC version as fitted to the 1997/2001 Accord Sedan VTS 2.0 has 150ps @ 6000rpm. The 4WD and LEV versions have less power again.

F22B
Capacity 2156cc Bore x Stroke[mm] 85 x 96

There are DOHC non VTEC & SOHC non VTEC and SOHC VTEC versions of this engine. The DOHC version as fitted to the Prelude Si produces 160ps @ 6000rpm and 20.5kgm @ 5,200.

There is also an F18B
Capacity 1849 cc Bore x Stroke[mm] 85.0 x 81.5


Modified by jimakazi at 4:09 PM 6/6/2005


Modified by jimakazi at 4:09 PM 6/6/2005</TD></TR></TABLE>

F22B has 95mm stroke, not 96... But I would love to get my hands on one of those F18B cranks... 81.5mm stroke... Put that inside an h22 with some huge cams and rev that to 10 grand...mmm...
F22B DOHC non-VTEC basically has an h23 head... I'm pretty sure your compression wouldn't change that much with that head... Idealy an H22 head would make the most power and will bolt to your block with slight modification... However, no matter which head you choose your low compression will always be restricting the amount of power you will produce...

jimakazi

Thanks sam1am26 - late night typo, the stoke is as you point out 95mm.

I'm going to try the DOHC head replacement as it's the least work. I'll get a dyno [for a laugh] before and after.

I'll post the results when completed.

Thanks everyone.

yellaboi

I can't believe how many people will tell someone else that something doesn't exist and will tell someone who knows it exists they're wrong.

hypeonline

F18B
Accord 1.8 VTS (JDM).

Specifications

Bore × Stroke: 85.0 × 81.0 mm
Displacement: 1849 cc
Valve Configuration: SOHC, 16 valves, VTEC
Compression ratio: 9.3:1
Max power: 138 hp (103 kW)
Max torque: 124 ft·lbf (165 Nm)

F20A
1990-1996 Accords (JDM)

Specifications

Bore × Stroke: 85.0 × 88.0 mm
Displacement: 1997 cc
Valve Configuration: SOHC, 16 valves

[edit] F20Z
similar to the F20A above, used in the Accord in Asia and Europe.

Specifications

Bore × Stroke: 85.0 × 88.0 mm
Displacement: 1997 cc
Valve Configuration: SOHC, 16 valves

[edit] F22A
1990-1993 Accord, 1992-1996 Prelude S ,1995-1998 Odyssey.
Specifications

Bore × Stroke: 85.0 × 95.0 mm
Displacement: 2156 cc
Valve Configuration: SOHC, 16 valves
Compression ratio: 8.8:1
Max power:
F22A1: 125 hp (93 kW) @ 5200 rpm
F22A4: 130 hp (97 kW) @ 5200 rpm
F22A6: 140 hp (104 kW) @ 5600 rpm
Max torque:
F22A1: 137 ft·lbf (186 Nm) @ 4000 rpm
F22A4: 142 ft·lbf (193 Nm) @ 4000 rpm
F22A6: 142 ft·lbf (193 Nm) @ 4500 rpm

[edit] F22B1
1994-1997 Accord EX and Acura 2.2CL.
Specifications

Bore × Stroke: 85.0 × 95.0 mm
Displacement: 2156 cc
Valve Configuration: SOHC, 16 valves, VTEC
Compression ratio: 9.2:1
Max power: 145 hp (108 kW) @ 5500 rpm
Max torque: 147 ft·lbf (199 Nm) @ 4500 rpm

F22B2
1994-1997 Accord DX and LX.

Specifications

Bore × Stroke: 85.0 × 95.0 mm
Displacement: 2156 cc
Valve Configuration: SOHC, 16 valves
Compression ratio: 8.8:1
Max power: 130 hp (97 kW) @ 5300 rpm
Max torque: 139 ft·lbf (188 Nm) @ 4200 rpm

F22Z2
1994-1997 Accord 2.2i.

Specifications

Bore × Stroke: 85.0 × 95.0 mm
Displacement: 2156 cc
Valve Configuration: SOHC, 16 valves, VTEC
Compression ratio: 9.3:1
Max power: 150 hp (112 kW) @ 5500 rpm
Max torque: 148 ft·lbf (200 Nm) @ 4500 rpm

[edit] F23A1
1998-2002 Accord EX and LX, and Acura 2.3CL (USDM)
Specifications

Bore × Stroke: 86.0 × 97.0 mm
Displacement: 2254 cc
Valve Configuration: SOHC, 16 valves, VTEC
Compression ratio: 9.3:1
Max power: 150 hp (112 kW) @ 5500 rpm
Max torque: 152 ft·lbf (205 Nm) @ 4500 rpm

F23A5
1998-2002 Accord DX (USDM)
Specifications

Bore × Stroke: 86.0 × 97.0 mm
Displacement: 2254 cc
Valve Configuration: SOHC, 16 valves
Compression ratio: 8.8:1
Max power: 135 hp (100 kW) @ 5500 rpm
Max torque: 153 ft·lbf (206 Nm) @ 4500 rpm

DOHC engines

F20A
1990-1993 Accord 2.0Si (JDM)

Specifications

Bore × Stroke: 85.0 × 88.0 mm
Displacement: 1997 cc
Valve Configuration: DOHC, 16 valves
Compression ratio: 9.5:1
Max power: 100 hp (112 kW) @ 6100 rpm
Max torque: 137 ft·lbf (186 Nm) @ 5000 rpm

F20B
1998-2002 Accord SiR-T and Type R in non-US countries.
Specifications

Bore × Stroke: 85.0 × 88.0 mm
Displacement: 1997 cc
Valve Configuration: DOHC, 16 valves, VTEC
Compression ratio: 11.0:1
Max power: 180-200 hp (134-149 kW) @ 7000 rpm
Max torque: 141-144 ft·lbf (189 Nm) @ 5500 rpm

F20C
It was designed specifically for the S2000 and shares some engineering with the Honda K engine. A long-stroke F22C1 variant was also produced.


F22B
1992-1996 Prelude Si (JDM)
Specifications

Bore × Stroke: 85.0 × 95.0 mm
Displacement: 2156 cc
Valve Configuration: DOHC, 16 valves
Compression ratio: 9.3:1
Max power: 160 hp (119 kW) @ 6000 rpm
Max torque: 148 ft·lbf (200 Nm) @ 5000rpm

Not all the specs but most of them

95OdyLX

How did the head swap turn out? I may be doing the head on my Ody and have the same option.

FYI: The above post says F22A6 with 140hp - mine in fact is a F22B6 with 140 HP. Is there an A for the Accord engine and B for the Odyssey engine? or just a post mistake?

MoonScryer

It doesn't matter either way. The F22B DOHC head will bolt to either. If you are switching the engine out completely, it is a moot point, just make sure you get the p39 ECU with the F22B DOHC engine - makes a world of difference.

Deetz

I have this swap done, imo, its a lot better to just swap the whole engine out for a low mileage jdm engine. As far as the ecu goes, i doubt it makes any difference, my car goes like hell with the original ecu.

I do have a P06 ready to chip this summer, but i'm not expecting any gains.

Here's a shot before i installed the engine

Zteve

Dude... you have anger issues... not everyone is a pro like you! Get over yourself and learn to spell....

XXXB@MB@MXXX

hey whats up i also have a f22b sohc non vtec in my cd7
i am also looking to get some info to see if i can
swap a f series vtec dohc head to my f22b block in my cd7 or shoulld i just go with a g22

race04

need info I have f22b block and I like to make the car dohc vtec what will I need car is a 1996 prelude my f22b has a dohc on it now I want vtec

carlito23rd

I just got me a 97 odyssey 2.2 none vtec does the vtec head from a 2.2 97 Accord fit

carlito23rd

Need help on last post