Hey whats up,
I just got done pulling my h23 out of my 92 today, and I already have a h22a4 to be swapped in from a base 5th gen lude. I just wanted to know what problems am I gonna run into when I put the h22 in my lude tomorrow? Like what electrical problems, and vacuum problems etc, because I know the motor I am swapping in is obd 2 and my chassis is obd 1 so what connector differences, am I in order for a adapter harness and a obd 2 ecu? Or what would be the best and easiest way to go about wiring, i want to do very little! Yea so I took some pics, sorry if they are a lil blurry they are taken from my phone.

Oh just incase your wondering, the only reason I am swapping this motor in is because I blew my h23 up and I had the base 5th gen sitting in my backyard, and I am just doing it cuz it only has 50k on it and my h23 had 215k and I wanted to do the 5 lug conversion, plus my cv's were out so I could use the ones off the 5th gen bla bla bla u get the point.









that last one is just so u guys can make fun of my rust.

 

use your h23 distributor and all the h23 wiring, then all you have to do is run the two wires for vtec. you'll also need an obd1 ecu though.

looks like you got some cleanin to do too

 

So If I use the h23 engine harness will it plug right into the h22 motor even though it is obd 2? Also, I know there must be a couple more sensors on the h22 but it wont matter because my ecu wont be looking for them right? I am using the stock ecu i think p14?
Anywho thanks for the reply I appreciate it.

 

Also, why is it that I might have to use a p13 ecu from a 4th gen vtec prelude? I know because the fuel map is different but wont it be looking for sensors that arent wired up?

Also would the plugs be all fine and everything, like would they not throw codes or anything?

 

well you need the p13 vtec ecu but afaik the only real difference is the obd2 uses crank sensors fromt he oil pump AND the distributor rather then just the distributor like the obd1. But all YOU have to do is run the obd1 distributor with the h23a1 engine harness and your set. (except for wiring vtec)

My first engine swap was a 96 obd2 motor into a 92 lude just like you have so I was once in the same boat.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jason-K &raquo;</TD></TR><TR><TD CLASS="quote">Also, why is it that I might have to use a p13 ecu from a 4th gen vtec prelude? I know because the fuel map is different but wont it be looking for sensors that arent wired up?

Also would the plugs be all fine and everything, like would they not throw codes or anything?</TD></TR></TABLE>

the fuel map is totally different since it has vtec. its looking for all the same sensors as the h23 plus the addition of the vtec solenoid and pressure switch.

 

the shitty part is that your car is a 92 so those vtec wires will have to be ran all the way back to the ecu, which isn't a huge deal if you know what you're doing.

 

I mean but there is no way I can run the p14 ecu until I can get a p13? I know my motor wont run as well with the different fuel map, but what I am saying is, Is it possible and If it is, how much worse will my motor be running with the p14 ecu?

 

also what do you suggest I clean my engine bay with? Its nasty in there as you can tell!!!

 

i powered washed mine, then used some engine degreaser to get the gunk out of the harder to reach spots. wipe it all down with a junk towel.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jason-K &raquo;</TD></TR><TR><TD CLASS="quote">I mean but there is no way I can run the p14 ecu until I can get a p13? I know my motor wont run as well with the different fuel map, but what I am saying is, Is it possible and If it is, how much worse will my motor be running with the p14 ecu?</TD></TR></TABLE>

I have been running my JDM H22 for almost a year now with my P14. I have had no problems at all. Dont sweat it. If you cant afford a P13 than the P14 will work fine.

I did the motor swap because i needed to use my car (H23 threw the Tbelt). Not just because i wanted an H22 so i havent been in any hurry to get ahold of a vtec ECU. I want one though, i have yet to feel vtec in my lude but if you just need a car to get around it will work fine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rosko &raquo;</TD></TR><TR><TD CLASS="quote">the shitty part is that your car is a 92 so those vtec wires will have to be ran all the way back to the ecu, which isn't a huge deal if you know what you're doing. </TD></TR></TABLE>

My '92 is pre-wired for VTEC. I would assume that his is as well.

 

well if I dont have the p13 then vtec wont work at all? Even if vtec is wired up, it wont work?

 

Also, what mounts am I gonna need to use to install the new motor? Can I use the same ones off the 4th gen or should I use the new mounts off the 5th? Or can someone tell me what to do please?

 

Vtec will not work without a Vtec ECU, and same mounts.

 

hahaha...how often to you see a 5gen just chilling in the backyard not running with an h22

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by red92si &raquo;</TD></TR><TR><TD CLASS="quote">

My '92 is pre-wired for VTEC. I would assume that his is as well. </TD></TR></TABLE>

really? mine didn't, I had to add pins to my ecu harness and everything

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rosko &raquo;</TD></TR><TR><TD CLASS="quote">really? mine didn't, I had to add pins to my ecu harness and everything </TD></TR></TABLE>

Yeah... The wire is attached to the passenger side shock tower, capped with rubber and marked with blue tape.

I beleive that some 92 Preludes came pre-wired and some did not. I have found over the 7 years of ownership that 92's slightly differed from each other whether it was early or late in the production line. The lighted ash-tray, and pre-wiring for VTEC are good examples of this.

 

capped and marked with blue tape? I thought that was a test plug for something. wtf???

If it is for vtec what does it go to? the oil pressure switch or solenoid?

also, what is the point of wiring vtec to the ecu if it wont even work without the p13?


Modified by Jason-K at 3:55 PM 5/9/2007

 

sorry to jack your thread. but I also have a 92 si and I'm in the market for a h22. was wonderin if you could shed some light on the pre wired for vtec comment. what does the lit ash tray have to do with this?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 218luder &raquo;</TD></TR><TR><TD CLASS="quote">sorry to jack your thread. but I also have a 92 si and I'm in the market for a h22. was wonderin if you could shed some light on the pre wired for vtec comment. what does the lit ash tray have to do with this?</TD></TR></TABLE>

The ash tray light has nothing to do with this, it is just one of the things that some preludes had in 92 that others didnt. I guess the same thing is with vtec, some were wired for vtec and others werent.

I have that test plug on my passenger side shock tower but I dont know for sure if that has anything to do with vtec and if it does what does it even go to ya know?

Anyways someone who knows something please post away

 

bumpety bump

 

someone plz...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by red92si &raquo;</TD></TR><TR><TD CLASS="quote">

Yeah... The wire is attached to the passenger side shock tower, capped with rubber and marked with blue tape.
.. </TD></TR></TABLE>

That is incorrect. The one with blue tape is the RPM test lead.

 

Thats what I thought it was because when I installed my remote start it said I could wire the tach wire to that plug or to any injector wire. Yea I knew it was wrong but anywayz...

I am looking for the knock sensor plug on my h23 harness and I cant find it
So can someone please tell me which one it is? like what color and how many wires go to it?