sadam-insane

Sorry to jump in here but got a few questions.... Who on here has found and or swapped the H23 and F20B with the automatic. Tryin to get this done on a CB7 here in florida before my girl comes back from overseas... any suggestions.

I had to get some answers on this one here real soon! So check it
Does anyone on here have any input and or experience wit the F20B of the SIR-T automatic swap for the CB7s.... My girl has finally agreed to let me tear into her accord and this is what I came up with for her swap. Now I know that the Imoblizer is not going to be swapped over witthe ecu, but I wanted to know if the TCU and or the ECU would work with a harness or would I just run it with a obd1 setup altogether.

And one more... her oem tranny is going out also so definatley I would be looking into the auto tranny swap. But the F20B swap with the tranny doesnt include the tcu becuase of the immobilzer... now what stateside tcu would plug up and safely control the tranny accord EX tcu or a prelude h22 tcu.

Rosko

iTrader: (1)

Hmmmn, got my H23a torn down today and noticed a few differences in mine. My head is stamped P13 and my intake mani is configured just a little differently. I'll have to take pics but it does not use the air injection like yours and the Euro-R do. It also has the iacv mounted in the front and I dont see that on yours. Mine also has the little metal tag on top of the plenum.

I'll take some pics when I get a chance, I didnt have time tonight. I'll get the exact center to center on the rods as well, my pistons looked just like the ones earlier in this thread too. Its just the head and mani that confuse me.

Apex1972

Hey Rosko, have you or anyone you know of tried the EuroR manifold on the H23 VTEC? ?Ooops just read ESPs thread above. Looks good .

vinuneuro

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ESP.net &raquo;</TD></TR><TR><TD CLASS="quote"> s far as the Auto H23A Vtec Blue Top cams being any different then a 5 spd JDM H22A cam far as profile... I do not think so...

97-01 Auto Base Prelude, 97-01 5 spd Base Prelude, 97-01 5 spd SH Prelude

All share the same part # far as Cams... Honda for the $ would not make an Automatic cam.

More food for thought: Taken from prelude forum

Did some research- interesting... Head casting p/ns:
USDM:
93-96 VTEC Prelude: 12100-P13-000
97 Type SH Prelude: 12100-P13-000
97 Base Prelude: 12100-P5M-305
98-00 Base/SH Prelude: 12100-P5M-020

CD6 4D Accord Si-R: 12100-P13-000
CD8 2D Accord Si-R: 12100-P13-000
CL1 4D Accord Euro R: 12100-PDE-E00
CL2 Wagon Accord Si-R: 12100-PCF-010 (AWD DOHC H23A VTEC)
BB6 Prelude Si-R: 12100-P13-000

I found two for the BB6 Type S:
12100-P5P-305
12100-P5P-J01

I also found a 12100-P5M-010 for the Si-R. The second numbers appear to have come about at the same time the USDM p/n changed. I can only assume it corresponds with some minor casting change or similar.

To answer the original question, and for those to whom it is not obvious...

If you find a casting with a stamping of:

P13 = USDM H22A VTEC head or JDM Si-R 97 or earlier
P5M = USDM H22A VTEC head or JDM Si-R 98 or newer
PDE = JDM CL1 4D Accord Euro R
PCF = JDM CL2 Wagon Accord Si-R (AWD DOHC H23A VTEC)
P5P = JDM Prelude Type S or S-Spec

so it looks like this one did come off a Euro R. Also, the LMAs changed in 98 from the "assembly" to the spring. Oddly, the rockers changed in '97 but I'm not sure why or what the change was.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by A Blue Lude &raquo;</TD></TR><TR><TD CLASS="quote"> And the serial number on the timing cover is afaik the way to actually tell these things. ie,
F20B - PCB
H22A "R" - PCD
H23A - PCF
4g H22 - P13
Base H22A - P5M
ATTS H22A - P5P</TD></TR></TABLE>

Do the various head codes have any functional significance? Because for a given engine there seems to be multiple codes shown in different locations. For example:

98+ Base heads have P5M on the timing cover. Whereas the SH has P5P. However, all 98+ heads have a PCF code in the parts catalog.

There are similar differences with the other H motors as well. Also wondering whether all the USDM heads (P13 and P5M) are superseded to PCF.

Just wondering what all this means and if there's really any difference.

91tealhatch

can anybody tell me this?
I bought a H22 swapped hatch. I was told it was a type s swap. Its in a 92 civic, P13 ecu, red VC, H22A block stamp, PDE head casting. IABs P13 intake mani. OBD1 dizzy

im tying to find out which motor i have, if its a 10.6:1 H22 or the 11:1 as the head casting would suggest.

I dont think its the type s since it has IABs, could be wrong.
or the LSD tranny, and the tranny code id tag is not read-able.

any help would be great!!!!

ESP.net

Type S will have IABs (secondaries)
Euro R wont

91tealhatch

do you know what it a compression test should be at if it was a type s? compared to a 10.6:1 H22a? thanks for the help!

ESP.net

What 2 digit year is on the head casting between Cyl 3-4 in the circle. Also Type S/ Euro R cams should have a Blue Tint to them.

snobordboy

Also a true type-S will have mounting points for the ATTS unit on the block, and would need a conversion plate to run a regular base tranny and halfshaft setup.

91tealhatch

it says 0/0. so it would be a 2000 head correct?

there is a little tab thing about the block stamp... would that be it?

alterdcreations

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91tealhatch &raquo;</TD></TR><TR><TD CLASS="quote">can anybody tell me this?
I bought a H22 swapped hatch. I was told it was a type s swap. Its in a 92 civic, P13 ecu, red VC, H22A block stamp, PDE head casting. IABs P13 intake mani. OBD1 dizzy

im tying to find out which motor i have, if its a 10.6:1 H22 or the 11:1 as the head casting would suggest.

I dont think its the type s since it has IABs, could be wrong.
or the LSD tranny, and the tranny code id tag is not read-able.

any help would be great!!!!</TD></TR></TABLE>

in the post above this quote it say you have a accord type r spec
PDE = JDM CL1 4D Accord Euro R

H22Honda98

did you ever find anything out about the powers steering? i konw you probably wont use it, but is there a way to use electric power steering on a prelude?

h23sdominate

im doing this swap this summer on my 96 prelude si, i know this thread is old but i was wondering if my manual tranny would bolt right up to the h23 vtec by just changing the tensioner??

Sam_J

Bump for some more info,
From what I'ved gathered the h23a doesnt have a balanced crank? the lower redline (6800) would make sense. I've also read somewhere that they make 200hp, not 220?

ESP.net

From what I saw on my engine seemed to have material taken out of the counters to indicate it was balanced.

Sam_J

But doesnt the h23 have that as well?

TwizT

I know the OP said that JDM obd2 engines may not use crank sensors, but does the H23A have provisions for the crank sensor? I'm assuming that since the outside of the block is identical to the obd2 H22A, so that it would have this provision. Can anyone just confirm this?

A Blue Lude

For what it's worth my JDM OBD2 Accord H22 didn't have any provisions.

ESP.net

The H23A Vtec Blue 98-01 Top I got, doesn't have the crank angle sensor being that the distributor is internal coil I believe same with the guy who just posted OBD2 JDM H22A. From what I see all JDM/Euro H's over seas are internal coil? which would mean no crank angle sensor. However I believe if your car has and is looking for the crank angle sensor you can re wire it to the distributor? or simply run the crank angle sensor and pulley from your old engine?

A Blue Lude

I think the question he's asking is if the oil pump housing has the mounting points for the USDM-style CKP/TDC, which would make bolting on the sensors a piece of cake. And my Accord H22 didn't have them.

TwizT

Thanks for phrasing my question better than me. I was wondering if I would be able to mount the OBD2 crank sensor, if I reused the stock H22A4 oil pump housing and parts.

A Blue Lude

If you're fine with swapping over oil pumps then you won't have any problems...CKP/TDC just mounts to the oil pump housing. Make sure to use the US balancer shaft belt pulley.

I was lazy and didn't want to swap pumps, it's possible to work around it depending on what ECU you want to run the car with.

DaInFaMMuS1

i <3 this thread lol, lots of good info. The stock cams on this motor are just usdm/jdm cams right? I got a basemap from phearable.net to run mine to 8k, which from reading on here i shouldn't be doing, is that correct? Or if i keep my A/F ratio correct and install the stage 2 cams/valvesprings/retainers i have i should be ok?

Also the stamping on my head is slightly different from ESP's, what head would i be most likely running if the motor was out of a 99 accord SIR wagon w/H23?

TwizT

I guess the JDM engine importers swap heads onto these JDM H23A VTEC blocks? I'm just curious, I'm pretty sure the angle of the valves in the Type S head are on a different angle than the JDM H22A, is this the same for the H23A VTEC head?

Man...someone's got to really crack this motor open and tear it down and take pics!

DaInFaMMuS1

I was just looking at the camgear cover that came with my motor, it lines up with the head codes of other members with H23's. Mine's out of a 99 it looks like, still had belt driven power steering back then cuz my crank has the pulley for it.