hi all - just wondering exactly what differences there are between the two motors besides 10 hp i think . looking to buy a prelude with a jdm h22 in and would like to know more ! thanks. also i think the prelude is running the stock usdm ecu. any help is very much appreciated. car is a 98 base.

 

compression is different.

search.
you can find the specifications from f22/h23/h22 usdm/hdm.
very easy to come across.

https://honda-tech.com/zerothread?id=866663

 

the jdm one is from japan and the usdm one is from japan too, did you know that?

10.6 compression, adjustable tps, no cold start valve

 

i remember vaguely now that u mentioned both are from japan. i didnt know about the adjustable tps and no cold start valve ! so no worries about having to switch an ecu ? thanks ! i tried searching but nothing was coming up -

 

The ecu's are different too. https://honda-tech.com/zerothread?id=689805

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by driftinflyboy &raquo;</TD></TR><TR><TD CLASS="quote">hi all - just wondering exactly what differences there are between the two motors besides 10 hp i think . looking to buy a prelude with a jdm h22 in and would like to know more ! thanks. also i think the prelude is running the stock usdm ecu. any help is very much appreciated. car is a 98 base.</TD></TR></TABLE>

i know some differences. For the JDM you have to use SEArch and for the USDM use seaRCH.

j/p

well...
USDM 190 hp / JDM 200 hp
the compression for USDM is 10:1 and JDM 10.6:1
injectors for USDM about 290 cc and JDM 320cc ...i think
and for all that to work OK the ecu has litle bit different programing
can't remember anything else...

now if its gonna be the jdm type-S (220 hp)
the compression is 11:1 (or some say 11.1:1 ...i don't know for sure)
little bigger injectors (i'm not sure about that, may be is the same with the JDM 200hp H22)
more angressive cams ...not much but there is a difference
single runner intake manifold (wich the othe h22's have dual runners with tb's to optain more tq on low rpms)
and for sure the ecu programing
and i also believe, as i have seen from pics, the stock header is a little diff too on the type-S

just some info from me


Modified by Buffalo at 6:48 PM 2/2/2006

 

hahahhaha

 

jdm obd1 dizzy= internal coil
usdm obd1 dizzy=external coil
search

 

Heres a relavant question, Can I put a JDM obd1 head onto a USDM obd2 block?? Before all you posers start to say" sure no problem.." I asked this question about the oil pan and everyone who answered said "sure no problem,only diffrence is one is steel and the other is aluminum" Well this is not true the pan doesnt fit there are suble diffrences as to why not. So only answer if you know fo sho!!!

 

RLZ is doing it with jd3jdm's engine....but i dont think they know what theyre doing

psssssspssssssss

(inside joke)

 

<u>Dont post bs if you dont know youre right, because youre not</u>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Buffalo &raquo;</TD></TR><TR><TD CLASS="quote">injectors for USDM about 290 cc and JDM 320cc </TD></TR></TABLE>
obd1 h22a injectors are 345cc regardless (peak and hold)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Buffalo &raquo;</TD></TR><TR><TD CLASS="quote">the compression is 11:1 (or some say 11.1:1 ...i don't know for sure)
little bigger injectors (i'm not sure about that, may be is the same with the JDM 200hp H22)</TD></TR></TABLE>
its 11:1, and the injectors are the same as any other obd2 h22, 290cc saturated

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Buffalo &raquo;</TD></TR><TR><TD CLASS="quote">more angressive cams ...not much but there is a difference
single runner intake manifold (wich the othe h22's have dual runners with tb's to optain more tq on low rpms)</TD></TR></TABLE>
the cams are much more aggressive, and type-s h22as have dual runners, its the euro r that doesnt

 

The head swaps fine as far as I know I think I did one once I can't remember the exact years of the two heads though But I believe it's teh same in every way. The oil pans don't swap though like you said

 

i put a jdm head in my 97 lude...don't feel any different.

 

thanks again for the good info !

 

the oil pans will change out....

 

Yeah, the oil pans will change out and the JDM cams are diff from the USDM cams, so you should have felt a difference.... but its only a little bit better...

 

i just said that the cams are not different, take a micrometer to them....theyre the same...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mgags7 &raquo;</TD></TR><TR><TD CLASS="quote"><u>Dont post bs if you dont know youre right, because youre not</u>
i said "...i think " so stop being a smart ***

 

yes sir. my sincerest apologies

this just in - posting your thoughts in place of facts is good

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mgags7 &raquo;</TD></TR><TR><TD CLASS="quote">yes sir. my sincerest apologies

this just in - posting your thoughts in place of facts is good</TD></TR></TABLE>

ahaha, jackass

oil pumps are different. Lower timing cover is different. Oil pan/baffles are different, different intermediate shafts....uh, cant think of anything else that hasnt been said.

 

sorry to threadjack, but when changing the dist cap on a jdm h22, what dist cap should i get from what car thats the same as the h22a dist cap