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Differences in JDM H23 vs. USDM H23

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Old Mar 31, 2004 | 09:21 PM
  #1  
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Default Differences in JDM H23 vs. USDM H23

I saw somone on ebay selling JDM H23 cams, and it made me wonder if there were any differneces. are there any differences? Anyone have specs?
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Old Mar 31, 2004 | 10:21 PM
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as far as i know, the h23 didnt exist in JDM land, only a dohc f22b
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Old Mar 31, 2004 | 10:34 PM
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Default Re: (Eddiebx)

should have done a search this was just covered exstensively ....but to answer your question the only jdm h23 is vtec and thats for the sir accord but the f22b was in place the h23 non-vtec which shared the same cams.
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Old Apr 1, 2004 | 06:51 AM
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Default Re: (95deckedlude)

i thought that the h23a came in 2 versions from japan. the dohc non vtec and dohc vtec versions. the us got the h23a1.

if thats not the case, then im at a loss. i have an h23a no 1 after it, but it had the regular dohc valve cover. it was not tightened down when i got it, and it was missing cams and guides. so, people are saying there was no h23a except the h23a vtec. so im lost. please clarify. searching hasn't helped.


Modified by teamlegacy at 4:09 PM 4/1/2004
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Old Apr 1, 2004 | 07:25 AM
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Default Re: (teamlegacy)

You have an H23a with no 1???
And it is a DOHC Non-VTEC???
Is it USDM??? JDM???
Where did you get this motor from???
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Old Apr 1, 2004 | 08:34 AM
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Default Re: (Sam1am26)

he said it was missing cams and original valve cover...

for a complete list of engines, codes, jdm, ukdm, whatever, go to the tech/data sections at http://www.accordinglydone.com
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Old Apr 1, 2004 | 08:48 AM
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Default Re: (CD8)

You guys do realize that a lot of places that sell JDM engines advertise the JDM F22B motor (the JDM equivalent of our H23) as a JDM H23.

They are referring to the F22B. I believe that the F22B motor has the same exact cams as our H23.
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Old Apr 1, 2004 | 09:12 AM
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Default Re: (AndyD)

i know but this guy is saying he has and h23a...
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Old Apr 1, 2004 | 09:14 AM
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Default Re: (Sam1am26)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sam1am26 &raquo;</TD></TR><TR><TD CLASS="quote">i know but this guy is saying he has and h23a...</TD></TR></TABLE>
It's the same thing as an h23a1
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Old Apr 1, 2004 | 09:58 AM
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Default Re: (SKDRCR)

yea but where the hell. its said everywhere that the only h23a made was a dohc vtec, and from what i can tell, it's not vtec.

how can i tell. are there differences in the block, (i.e. open or closed deck) if so, how do i check it. also, im not sure if it was the original valve cover or not, b.c it came with that one, the guy never said it wasn't original, it just wasn't bolted down.

by the way, the head has p14a stamped on the side, which means non vtec, am i wrong.

have i proved everyone wrong? i picked this engine up from a guy in va beach for 200 dollars. if it is somehow the vtec, it's for sale. haha :D
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Old Apr 1, 2004 | 10:04 AM
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Default Re: (teamlegacy)

p14 is non vtec head just like on h23a1
apparently there is an h23a non vtec
same thing as h23a1
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Old Apr 1, 2004 | 10:05 AM
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The ONLY JDM H23 is VTEC, from the SiR Accord Wagon. JDM Si Preludes use F22B.
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Old Apr 1, 2004 | 10:11 AM
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Default Re: (Sam1am26)

apparently my head has exploded.

maybe i have a vtec block with the non vtec head?
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Old Apr 1, 2004 | 10:15 AM
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Default Re: (teamlegacy)

bump someone help colin out. Whats up with his motor??
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Old Apr 1, 2004 | 10:17 AM
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Default Re: (teamlegacy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by teamlegacy &raquo;</TD></TR><TR><TD CLASS="quote">apparently my head has exploded.

maybe i have a vtec block with the non vtec head?</TD></TR></TABLE>If the block engine stamp says H23A with no number after the A, and is not VTEC chances are it is an Australian H23A and the specs are the same as the USDM H23A1.
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Old Apr 1, 2004 | 10:23 AM
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Default Re: (biglew)

then how come there isnt a record for an aussie h23a?
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Old Apr 1, 2004 | 10:34 AM
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Default Re: (teamlegacy)

What do you mean record?
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Old Apr 1, 2004 | 10:38 AM
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Default Re: (biglew)

in all the faq's and "essential" prelude links, there is nothing saying there is an h23a dohc non vtec in australia or in general. theres plenty about the h23a vtec and h23a1.
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Old Apr 1, 2004 | 10:45 AM
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Default Re: (teamlegacy)

Only site I know off the top of my head is the 4th gen Prelude comparison chart on preludecrazy.com. It lists both Australia and New Zealand Si ludes as H23A and USDM as H23A1.

As far as JDM engines go I am pretty sure on this because all the info I get for JDM engines I get directly from Honda Japan's official site which still has places that lists all engines for all generations.
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Old Apr 2, 2004 | 11:04 AM
  #20  
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Default Re: (biglew)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95deckedlude &raquo;</TD></TR><TR><TD CLASS="quote">should have done a search this was just covered exstensively ....but to answer your question the only jdm h23 is vtec and thats for the sir accord but the f22b was in place the h23 non-vtec which shared the same cams. </TD></TR></TABLE>

read this thread...full explanation https://honda-tech.com/zerothread?id=795140
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Old Apr 2, 2004 | 12:09 PM
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Default Re: (95deckedlude)

so either, i have the aussie h23a non vtec. or the jdm h23a vtec block w/ a p14 (f22b dohc or h23a non vtec) head. i'll bet my money thats it the aussie versions.

thanks guys.
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