2.2/2.3 hybrid? - Honda Prelude Forum

SilverSurferSi · 05-06-2002, 08:10 AM

I was told by a Tech friend hat JDM offers a 2.3 Si motor with the 2.2 Vtech head to produce 220 hp. Is this true? If so, whats to stop me from buying a 2.2 vtech head in a junk yard and rebuilding it from scratch?

Crate · 05-06-2002, 08:38 AM

before ya get flammed.. its vtec.. not vtech =]

but also, do a search there is tons of ppl who have asked this prior (including myself)

I emailed a guy who has done this hybrid and this is what you would need:

"
the parts you will need from the h22 are the
-complete head incl. valve cover
-cams
-cam gears
-timing belt pulley on the crank shaft
-thermostat housing
-rear coolant pipe(Black pipe that runs along the back
of the block under the intake manifold.
recomended parts (but not necessary)
-h22 oil pump
-oil squirters
if you dont' change the oil pump you can shim the
pump.
Im going to be writing a article on this or you can
run really thick oil.
15w 50 or 20w 50
i recomend this because the h23's are notorious for
spinning main bearings. and the thicker oil can help
prevent this.
Shimming the oil pump can raise the oil pressure.
THe h22 head bleeds oil away from the rest of the
block,when the vtec is engaged.
this makes the h23 block even more prone to spinning a
main bearing.
the only necessary modification of the block is
removing the oil control orifice. It's located
between cyl 2 and cyl 3 on the deck of the block
you;ll see it when you remove the head. It's easy to
pully out. it has threads in it. All you do is place a
screw in it with the same thread and pull it out with
pliers.
i think i covered the entire swap sorry if i forgot
enything
Sean Burgess=)
"

red92s · 05-06-2002, 09:11 AM

There IS an H23 VTEC engine offered in 2000+ JDM Accord SIR-T's. Your friend is incorrect about the HP rating though. . .it is rated at 220 PS, which is equivelent to about 197 HP. So the JDM H22 actualy has MORE HP than the larger H23 VTEC. I am not sure about the TQ ratings, as info on that motor is really tough to find.

G_Loc · 05-06-2002, 02:21 PM

Crate,

I was reading over my helm's last night when i saw that diagram of the block taht said "oil control orifice" What is it there for?

LudeTec · 05-06-2002, 04:45 PM

Quote:

Originally posted by red92s
There IS an H23 VTEC engine offered in 2000+ JDM Accord SIR-T's. Your friend is incorrect about the HP rating though. . .it is rated at 220 PS, which is equivelent to about 197 HP. So the JDM H22 actualy has MORE HP than the larger H23 VTEC. I am not sure about the TQ ratings, as info on that motor is really tough to find.

Hey,
Actually 220 PS = 216.98600 HP ~ 217HP.
Anyways, the highest available H23a vtec in Japan, is rated at 200PS which equals 197.26 HP ~ 197 HP. It is rated at 22.5 kg/m of torque which equals 162.74250 Lbs/ft ~163 lbs/ft
You can see the specs at honda japans site: Accord Wagon SiR

As for the JDM H22 having more HP, the JDM H22 is rated at 200 PS as well. So it actually has about 197 HP.
Josh

Si4WS · 05-06-2002, 05:04 PM

You don't have to cahnge the header? Seems like you would if you're changing the head? I thought the h23 header has a different bolt pattern then the h22 head.

red92s · 05-06-2002, 05:52 PM

Quote:

Originally posted by LudeTec

Hey,
Actually 220 PS = 216.98600 HP ~ 217HP.
As for the JDM H22 having more HP, the JDM H22 is rated at 200 PS as well. So it actually has about 197 HP.
Josh

Really? What is the conversion factor btn HP <-> PS? There was a big thread about the H23 VTEC motor when a few of us found out about it. Someone (cant remember who) that could read the JDM site translated some stuff. He seemed pretty sure that 220 PS was equal to be about 197 HP, maybe he just had the conversion factor wrong (?):
JDM H22a = more hp than JDM H23a VTEC?

Crate · 05-06-2002, 06:19 PM

Quote:

Originally posted by G_Loc
Crate,

I was reading over my helm's last night when i saw that diagram of the block taht said "oil control orifice" What is it there for?

i THINK.. dont quote me on this. but i believe it regulates oil flow in the h23..and you dont want that if you go w/the h22 head, cuse most the oil will be used up during the cam lobes changing up in vtec and that will leave the bottom dryer and you might spin a bearing

someone correct me if im wrong, im just infering off what the other guy told me....

LudeTec · 05-06-2002, 06:48 PM

Quote:

Originally posted by red92s

Really? What is the conversion factor btn HP <-> PS? There was a big thread about the H23 VTEC motor when a few of us found out about it. Someone (cant remember who) that could read the JDM site translated some stuff. He seemed pretty sure that 220 PS was equal to be about 197 HP, maybe he just had the conversion factor wrong (?):
JDM H22a = more hp than JDM H23a VTEC?

Hey,
The Singapore-based car mag 'Torque Class' once calculated the relationship as 1 JIS PS to about 1.01389 SAE HP. So I used that number

Josh

SilverSurferSi · 05-07-2002, 07:25 AM

I have no idea on alot of this stuff. I have always had american muscle cars, and decided to get this car almost 2 years ago. I put a cold air intake ona nd a few bolt ons,but thats it.

I dont want to sound dumb, but since I am new to import motors, I was curious of what the "Vtec" does? it sounds as if it draws more oil, bu twhat in the head does this do? Open valves farther? If I knew, then I would understand a bit more.

Crate · 05-07-2002, 07:50 AM

here is a good visual aid: http://integra.vtec.net/geeser/vtec.html

and read: http://www.honda-r.org.uk/html/vtec.htm

SilverSurferSi · 05-07-2002, 08:26 AM

That was the most informative reading I have ever seen on my prelude. I will definitely be doing this swap...

let the searches begin

hondaplex · 05-18-2002, 04:47 PM

ok i did the damn swap but have yet to find someone who can tell me exactly why im still redlining at 6400 rather than 7400?!

preludechic · 05-18-2002, 05:08 PM

Quote:

Originally posted by hondaplex
ok i did the damn swap but have yet to find someone who can tell me exactly why im still redlining at 6400 rather than 7400?!

This may sound dumb, but do you have the VTEC ECU?

And yes, the bolt pattern is different on the H22 and H23 head.

brendon2k · 05-18-2002, 05:55 PM

Quote:

Originally posted by hondaplex
ok i did the damn swap but have yet to find someone who can tell me exactly why im still redlining at 6400 rather than 7400?!

I'd agree with prelude chich. Did you put in a p13 ecu? If you want your motor to last you might not want to rev quite as high as in a h22 since the rods are a little longer.

preludechic · 05-18-2002, 06:18 PM

Very good point, brendon!

hondaplex · 05-18-2002, 06:32 PM

come on now give me more credit than that geez... of course i swapped out the ecu... so i didnt end up having any doubts with faulty used parts i got a brand spankin new one from honda, i even had them swap it out and give me another one to see if is was a defected one.

preludechic · 05-18-2002, 06:36 PM

Hey now, we were just making sure!! We don't know you so we disn't know how mechanically inclined you were, and besides, everyone makes stupid little mistakes like that.

Is it throwing any codes?

Crate · 05-18-2002, 06:45 PM

my calculator has a conversion table for ALL metric/standard and stuff.. came out to 197 hp.... shrug

hondaplex · 05-18-2002, 07:20 PM

it wasnt throwing any codes at first but now it is... vtec pressure switch... code 22, and o2 sensor, code 65.. ive swapped the pressure switch 3 times, no luck. all i can think of is not enough oil pressure.