Greets everyone, I am brand new to preludes. I have been trying to do my homework, and read the forums but I can't figure out a few things. here they are:

1. What is the difference between h22, h22a, h23, h23a, etc. I have seen people post about them all the time, and I can't tell if h22 and 22a are from pre 97 or what.

2. What kind of power can you expect from force inducing a 97+ prelude, and at what cost. Like I said I looked around and even searched, but I still don't know what is what so I am not sure about actual figures.

Thanks a bunch in advance.

 

Thanks JDM girl, that helps a bit, based on that, I am assuming that the h22 is the motor in the 5thgen preludes. am I correct?

(sorry I can't reply to your instant message it is saying I don't have access)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by n1neb4ll &raquo;</TD></TR><TR><TD CLASS="quote">Greets everyone, I am brand new to preludes. I have been trying to do my homework, and read the forums but I can't figure out a few things. here they are:

1. What is the difference between h22, h22a, h23, h23a, etc. I have seen people post about them all the time, and I can't tell if h22 and 22a are from pre 97 or what.

2. What kind of power can you expect from force inducing a 97+ prelude, and at what cost. Like I said I looked around and even searched, but I still don't know what is what so I am not sure about actual figures.

Thanks a bunch in advance.</TD></TR></TABLE>

H22a 93-96 prelude vtec
closed deck
h23 92-96 prelude si (i could be wrong)
closed deck

h22a4 97+ prelude
open deck

the h22a or a1 does dyno higher for some reason

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lildrgn &raquo;</TD></TR><TR><TD CLASS="quote">the h22a or a1 does dyno higher for some reason</TD></TR></TABLE>

i'm pretty sure the 4th gens (or h22a1) dyno higher do to the less restrictive emissions standards. in other words the 5th gen had to deal with more emission requirements.

 

pretty sure its becuase of the OBDl and OBDll setups.
wtih force induction, you can get as much power as you want. but money is all you need. depends on what you are looking for.

 

As for question #2: The H22 will make as much hp (up to a point) as you can afford to pay for. I was reading a post awhile ago in the FI forum by someone with an 11 sec 5th gen. If you're not gonna go ghetto-turbo, it'll cost you around $4-5 grand just to get started, and the $$$ figure to do it right can run many MANY times that amount. Ask Lildrgn, Lone Luder and Boosted97Lude (among others) about very fast Ludes with mid-5 figure modification price tags.

 

here's a few specs... if you guys see any problem let me know...

H22A
Displacement (cc): 2157
Power (bhp@rpm): 220@7200
Torque (ft/lbs@rpm): 163@6500
Compression Ratio: 11:1
Bore (mm): 87
Stroke (mm): 90.7
Cam Design: dohc
VTEC?: yes
OBD: 2
Year(s) Produced: 1997-2001
In the following car(s): Honda Prelude SiR (JDM)

H22A
Displacement (cc): 2157
Power (bhp@rpm): 200@7000
Torque (ft/lbs@rpm): 156@5250
Compression Ratio: 10.0:1
Cam Design: dohc
VTEC?: yes
OBD: 2
Year(s) Produced: 1999-2001
In the following car(s): Honda Prelude

H22A
Displacement (cc): 2157
Power (bhp@rpm): 190@6800
Torque (ft/lbs@rpm): 152@5500
Compression Ratio: 10.6:1
Cam Design: dohc
VTEC?: yes
OBD: 1 or 2
Year(s) Produced: 1994-1997
In the following car(s): Honda Accord SiR

H22A
Displacement (cc): 2157
Power (bhp@rpm): 220@7200
Torque (ft/lbs@rpm): 163@6500
Compression Ratio: 11:1
Bore (mm): 87
Stroke (mm): 90.7
Cam Design: dohc
VTEC?: yes
OBD: 2
Year(s) Produced: 1997-2001
In the following car(s): Honda Prelude Type S (JDM)

H22A
Displacement (cc): 2157
Power (bhp@rpm): 200@6800
Torque (ft/lbs@rpm): 161@5500
Compression Ratio: 10.6:1
Cam Design: dohc
VTEC?: yes
OBD: 1 or 2
Year(s) Produced: 1992-1996
In the following car(s): Honda Prelude VTEC

H22A1
Displacement (cc): 2157
Power (bhp@rpm): 195@7000
Torque (ft/lbs@rpm): 156@5250
Compression Ratio: 10.0:1
Bore (mm): 87
Stroke (mm): 90.7
Cam Design: dohc
VTEC?: yes
OBD: 2
Year(s) Produced: 1997-1998
In the following car(s): Honda Prelude

H22A1
Displacement (cc): 2156
Power (bhp@rpm): 190@6800
Torque (ft/lbs@rpm): 158@5500
Compression Ratio: 10:1
Bore (mm): 87
Stroke (mm): 90.7
Cam Design: dohc
VTEC?: yes
OBD: 1 or 2
Year(s) Produced: 1994-1996
In the following car(s): Honda Prelude VTEC

H23
Displacement (cc): 2259
Power (bhp@rpm): 160@5800
Torque (ft/lbs@rpm): 156@4500
Compression Ratio: 9.8:1
Bore (mm): 87
Stroke (mm): 95
Cam Design: dohc
VTEC?: no
OBD: 1
Year(s) Produced: 1993-1995
In the following car(s): Honda Prelude Type S (JDM)

H23A1
Displacement (cc): 2258
Power (bhp@rpm): 160@5800
Torque (ft/lbs@rpm): 156@4500
Compression Ratio: 9.8:1
Bore (mm): 87
Stroke (mm): 95
Cam Design: dohc
VTEC?: no
OBD: 1 or 2
Year(s) Produced: 1992-1996
In the following car(s): Honda Prelude SE/Si


for your second question, power estimate depends on how much money you want to put into your car. I'm allready pass 7K and that's just a basic turbo kit and coilovers. I still don't know what my car makes though, haven't been to the dyno yet but soon.

 

the 4th gens h22a1s, make more power because the 5th gens h22 is poop...jk..not really..but the h22a..is from the 4th gen JDM motor in japan they dont have numbers after the letter..and the JDM h22s make more power because tey have higher compression..peace

 

anything 95 or before is OBD1 and 96+ is OBD2

H22a - JDM DOHC VTEC
H22a1 - USDM DOHC VTEC
H23a- JDM DOHC Non-vtec (Si)
H23a1 - USDM DOHC Non-vtec (Si)

The 97+ preludes have an H22a1 motor (check above specs for HP and all that jazz)

-T-

 

As far as I have heard the OBD1 respond better to modifications.
Also in japan they have a better fuel quality or a higher RON level. because of this the compression is raised, therefore making more power

here in australia we have normal unleaded which is about 92 ron, then premium which is 95 and then we have higher quality fuel which is 98.. I believe in Japan the RON level is about 101

Dont ask me what RON means.. look it up in google

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crazieaccord &raquo;</TD></TR><TR><TD CLASS="quote">anything 95 or before is OBD1 and 96+ is OBD2

H22a - JDM DOHC VTEC
H22a1 - USDM DOHC VTEC
H23a- JDM DOHC Non-vtec (Si)
H23a1 - USDM DOHC Non-vtec (Si)

The 97+ preludes have an H22a1 motor (check above specs for HP and all that jazz)

-T-</TD></TR></TABLE>

not all 97+ are h22a1, I have an 01 base and I have a H22a4. I think is 99 and up that have H22A4 not sure though.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hypo-Si &raquo;</TD></TR><TR><TD CLASS="quote">Dont ask me what RON means.. look it up in google </TD></TR></TABLE>
Ron is a guy that I used to work with, he was an ******* and he smelled funny. Ok, really RON stands for Research Octane Number. The other 2 types of octane ratings are MON (Motor Octane Number) and PON (Pump Octane Number). I googled it.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">the 4th gens h22a1s, make more power because the 5th gens h22 is poop</TD></TR></TABLE>Hey, I resent having my engine called "poop", I much prefer "dookie".

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PreludeRacer023 &raquo;</TD></TR><TR><TD CLASS="quote">the 4th gens h22a1s, make more power because the 5th gens h22 is poop...jk..not really..but the h22a..is from the 4th gen JDM motor in japan they dont have numbers after the letter..and the JDM h22s make more power because tey have higher compression..peace</TD></TR></TABLE>


The JDM H22 makes more power because it has lighter valves and valvetrain components, higher compression, and more agressive cams.

 

RON isn't a very good measurement of octane because it is based on uncontaminated fuel unlike ehat you get at the pump you should use the average between RON and PON for actual octane

 

norm fuel here is 87 89 and 91...92 at BP. sorry I didnt mean all 97+ were H22a1 they aren't...they are H22a4. a1=OBD1 a4=OBD2

 

i found this one on a previous forum if this helps:
http://www.geocities.com/honda...s.htm