i have a usdm h23a being swap to jdm h22a how can u use the h23 crank sen. do i even need this for this engine i also have the p 13 but it is a usdm ecu can this work please help me this is my first swap from usdm to jdm any info will help

 

are they obd1 or obd2?

 

i think it is a obd1 is this right in a 1996 prelude the usdm 13 came out of a 95 h22 prelude this is the same computer as the 4th gen or is the 96 diff.

 

the 96 should be obd2 and the 95 is obd1. On the either the h22 or h23 are there wires coming out on the backside of the engine, near the crank pulley? If so, is it the one in the car or the one you are putting in?

 

i thought that the 92-96 prelude are all the same didnt they change in 98 that makes no sense why would they change it a year before the stoped making this style 92 - 96 are the same please help me with the crank sen. like i asked

 

Take it easy brad, all this info is in the archive.

Use the search to figure it out. My best advice to you is to get an obd2 oil pump for your h22, and install the sensors and obd2 h22 crank and balance gears, as well as the obd2 distributor.

 

what about the usdm p 13 will this work with the jdm motor an the crank sens that is not on the jdm motor or will it just not work thanks for your help

 

the ecu will work fine, you'll just need an adapter harness

 

still need help on the crank sennsor do not know how to mount it on the jdm h22a motor does it need this to run i also changed the injectors in the intake man. to run the h22a so it would be on the right side do u think this will work

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mgags7 &raquo;</TD></TR><TR><TD CLASS="quote">Take it easy brad, all this info is in the archive.

Use the search to figure it out. My best advice to you is to get an obd2 oil pump for your h22, and install the sensors and obd2 h22 crank and balance gears, as well as the obd2 distributor.</TD></TR></TABLE>

.

He already answered your questions.

JDM h22a does not have a mounting spots for the crank sensor. You have to swap to an OBDII oil pump, OBDII timing gear, and OBDII balancer shaft gear. This is the because the TDC sensor uses the timing gear to determine cylinder 1 tdc and the CKP sensor uses the balancer shaft gear to determine where the crank is in relation to cylinder 1.

these sensors are required.

 

https://honda-tech.com/zerothread/2084037

thats for a 5th gen, but your 96 shares the same concept other than the intermediate shaft.

 

it sounds as if you are putting an obd1 engine into an obd2 car with an obd1 ecu.
if that is the case why are you messing with the crank sensor?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by v4lu3s &raquo;</TD></TR><TR><TD CLASS="quote">it sounds as if you are putting an obd1 engine into an obd2 car with an obd1 ecu.
if that is the case why are you messing with the crank sensor?</TD></TR></TABLE>

the OBDI engine harness will not plug into the OBDII subharness. The plugs are pinned differently as well. A 96 h23a should have a crank sensor on the oil pump which means that he will either need to make a harness which runs from the CKP/TDC engine harness connector to the OBDI 8pin distributor plug and convert the harness for an internal coiled distributor.

or he can swap to the OBDII parts (which he would need to purchase), use the h23a harness and simply add vtec to the harness.

if the car was 92-95 he wouldnt have any of these problems.

 

beacuse i got a 96 jdm h22a complete motor an pulled out a usdm h23 96 an did not see how this would work i have the jdm dizzy an the crank an also the oil pump i was just wondering an needed help with this an help is useful thax for all that u have givin still need more so if u know any thing eles i mite need please tell me . thanks brad 225

 

if its a 96 h22 (OBDII) it should already have the crank sensor on the oil pump.

JDM, USDM only matters with the distributor (internal, external coil respectively)

The YEAR engine is what matters most in this case. 92-95 have all the sensors in the distributor. 96-01 have the CYP sensor in the distributor and TDC/CKP sensors on the oil pump.

 

but will this work with a usdm p13

i also change the inter coil to the external from my h23

 

are you not comprehending what we are saying? we are giving you all the information you need to fix the situation.

If the engine is OBDII and has the crank sensor on the oil pump, use your h23 harness and add vtec to it.

if the engine is OBDI, you have a couple options:

get an H22a4 oil pump, crank timing gear, balancer shaft gear and distributor

or

use the JDM distributor and convert it to external coil and make a harness that runs from the CKP/TDC sensor connector on the engine harness and run it to the distributor at the respective pins.

 

all that matters to the ecu is that it sees the sensors. Doesnt matter where they are.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98vtec &raquo;</TD></TR><TR><TD CLASS="quote">

the OBDI engine harness will not plug into the OBDII subharness. The plugs are pinned differently as well. A 96 h23a should have a crank sensor on the oil pump which means that he will either need to make a harness which runs from the CKP/TDC engine harness connector to the OBDI 8pin distributor plug and convert the harness for an internal coiled distributor.

or he can swap to the OBDII parts (which he would need to purchase), use the h23a harness and simply add vtec to the harness.

if the car was 92-95 he wouldnt have any of these problems. </TD></TR></TABLE>

I guess I see it as easier to convert to obd1, but then again thats easier than when i converted a 1978 civic to obd0 fuel injection.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by v4lu3s &raquo;</TD></TR><TR><TD CLASS="quote">

I guess I see it as easier to convert to obd1, but then again thats easier than when i converted a 1978 civic to obd0 fuel injection.</TD></TR></TABLE>

that just takes more work than its worth. I have the pinouts for the OBDI h23a1 engine harness connectors posted in the faq, but i highly doubt they are the same for the 96. Which means he would have to do a lot of reading and making charts. It helps to have a service manual to give you the wire colors and what each pins function is at the ecu. Then all you have to do is trace the wires from the ecu to the engine-subharness connection and label them. Also helps to have a basic idea of how the wiring schematic is done.

I have all the charts and diagrams written out to convert a 5th gen to an OBDI engine harness but it just wouldnt be the same.

The OP needs to figure out if its a 96+ or a 92-95. If the engine does not have a crank sensor on the oil pump, it is 92-95.

When the OP is asking the kind of questions he is now, i would not suggest any kind of conversion without some sort of actual (not online) supervision by someone who has a clue.

02 cents.

 

thanks alot almost done with my honda prelude 96 jdm h22a its a beast

 

easiest way to do it is just cut the harness open little sections at a time, and move those wires all the way up to the dist. then just pin them all into an 8-pin connector