as Im reading all these posts i see ppl talkin about different kinds of engines which i know nothing about. I have 01 prelude se and I was wondering what kind of engine i got or how i can find this out. What's the difference betweeen h22 and h23 and other different engines?

thanx

 

there is no such thing as a 2001 prelude SE.

if yours is a 2001, regardless of trim level, you have the H22A4 engine.

 

No you're incorrect on that. There is a Canadian model called the SE which is basically the SH without ATTS (or the base model with the SH rims, spoiler, etc.).

You have an H22A4 and the engine code should be on the block directly to the left of the header heat shield.

Gabe


[Modified by Gabe, 8:45 PM 11/14/2001]

 

hmmm.... learn somethin' every day...

 

you do..

also, the h23 is only on the 4th gen preludes. 92-96

 

heres the breakdown.
h22a - jdm dohc vtec
h22a4 -- 5th generation lude dohc vtec
h23- 92-96 NON VTEC ~ KEY WORD NON VTEC

 

you missed one.

h22a1 - usdm OBDI engine (dohc vtec)

 

oh ya , i forgot the 92- 96 us h22a1 dohc vtec the imfamous "si"

 

so which engine is the best one?
what are advantages or drawbacks of the different engines?

 

JDM H22a<--- OBD?, 220 hp.
H22a1(92-95)<----OBD 1, 190 hp.
H22a4<----OBD 2, 200hp

 

so am I..

 

Another great post! Go AWAY!

 

the JDM H22A is not 220 HP. Thats the Type S motor.

The JDM h22A has 200PS, or 206HP

as far as the H22a1 vs h22a4, although they are rated differently at the crank, the H22A1 seems to put just as much, if not a few more, HP down at the wheels


[Modified by JDM LUDE, 6:20 PM 11/15/2001]

 

it does
OBDII sucks

 

Anyone know what gives the JDM motors a slightly higher rated output?
I think the extra power of the H22A4 over the H22A1 is strictly due to the exhaust manifold design, a moot point since almost everyone gets an aftermarket header.
So what's with the JDMs? Is it just better aspiration or compression ratio or cam profile or what?

 

not a moot point because you get smaller if any gains out of a header upgrade on the a4

 

Well that's if you're measuring gains instead of maximum HP.
But of course, most important is area under the curve.

 

Well there are two JDM versions of the H22 in the prelude. One is almost exactally the same as the US version and has the same hp rating. The other motor is the Type S/SiR S-Spec version which has higher comp., more radical cams, slightly larger tB, mild p&p, etc.

Gabe

 

all i got to say is that OBDII really sux . no matter what you really do to your car you got to remeber that h22A4 there OBDII sensors on there can really restrict on what you do. also you go to remeber to be naturally aspirated, honda does a fantastic job with the engine for maximum gain of hp from the factory. so what ever bolt on you do to the car will not be like a domestic where you put an intake and get 100 hp. i myself for instance have a 5th gen lude with AEM cam gears, Greddy EVO cat back. AEM cai, dc sports ss headers , with all the basic bolt ons i havnet gained as much HP as i wanted to when i dynoed. at the most i assume 15 hp. all i got to say is that with the JDM type S , like "GABE" said, there comp is adjusted different, the main focus stands on the cams, plus you got to remeber that JAPAN does not have emmision laws << besides engine swapping at 40,000>
but they have there headers bored out larger without a catalyac converter., plus, the throttle body i do believe is bored out to 70mm. thats why there dispalcement is 220 hp. not the amwerican h22a4 which is 200 hp. dam i wish i had a type "s"