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My H22A4 to JDM H22A Swap thread.

 
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Old 04-26-2011, 08:48 PM
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My H22A4 to JDM H22A Swap thread.

Well my engine is here. I ordered a JDM h22a OBD 2 from NaganoUsa. It has been raining almost everyday since it came in and I haven't had time to get pics yet but they will come soon. Here are the differences i noticed so far on the JDM h22a:

*Distributor in the h22a has internal coil vs. my h22a4 having an external coil and different type of plugs for the harness than in the h22a.

*Intake manifold has different locations for some vacuum lines and some sensor locations.

* from what I read, the oil pump needs to be swapped from my h22a4 due to crank sensor location in the oil pump of my h22a4 vs the h22a not having one there.

*The harness from the h22a is of course made for a right hand drive car and being that some of the sensors are not in the same place as on my h22a4, I will swap the harness from the h22a4 to the h22a.

I dont have the engine out of my prelude yet so I am not sure of what else may be different but I am sure will find out as I go. I want all of my sensors to have a home in the wire harness when I am done and all my plugs on the harness from the h22a4 to have a seat into their proper place on the h22a when I am done. Hey if you guys know what else I should look out for along the way please chime in.

I have the intake manifold already off of the h22a and the exhaust manifold off of the h22a because I am going to be upgrading to a header. I've already taken the distributor out of the h22a so I can swap the one from my h22a4 when the engine comes out. I ordered a timing belt water pump and seals kit so that I can put in on the h22a before dropping it in. I will include pics of that process as well.

I ordered a clutch kit so I will be doing a clutch and lightweight flywheel install as well. I went with the F1 Racing Xtreme stage 3 kit with lightweight 12lb flywheel because i figured since I was in there I may as well do the clutch as well. I know this probably isn't the top choice for clutches but I've read decent reviews on the Xtreme kits as opposed to the regular F1 kits and for the money it seemed my best option. I thought at least it should hold up better than a stock kit...right??? Guess i will see.
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Old 04-27-2011, 06:14 PM
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Re: My H22A4 to JDM H22A Swap thread.

I just finished the swap, mine was slightly more complicated because I have the SH model, so i found i had to swap out the tranny and the drive shaft aswell, it looks like you have done your research and found out everything i had to learn the hard way. good luck with the build.
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Old 04-27-2011, 08:39 PM
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Re: My H22A4 to JDM H22A Swap thread.

don't have to swap oil pumps. just use as h23 distributor and search for my obd 1 to obd2 distributor swapping guide.
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Old 04-28-2011, 09:43 AM
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Re: My H22A4 to JDM H22A Swap thread.

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Originally Posted by Bustr View Post
don't have to swap oil pumps. just use as h23 distributor and search for my obd 1 to obd2 distributor swapping guide.
i dont even have an h23 distributor. I dont have an h23 anything. I saw the guide on the splicing the wires for the internal coil distributor to fit the h22a4 harness if thats what you are talking about. anyhow Im doing a timing belt job on it before I drop it in so why not just swap the oil pump while im down there to make everything fit as it was before on my h22a4??

got some pics just got to get em loaded. On the h22a: I got the valve cover off, intake manifold, crank pulley, timing belt cover and ready to repaint the valve cover.

Last edited by Oceanblue; 04-28-2011 at 09:48 AM.
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Old 04-28-2011, 11:42 AM
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Re: My H22A4 to JDM H22A Swap thread.

since i just got done doing mine and it's running excellent, i'll try to give a little more info if you'd like:
- intake manifold swap with injectors if you are running the USDM ECU
- manual tensioner swap, i have it didnt swap it since i figured how to get the auto one back on due to timiing belt fitment for the f20b.
- oil pump is a good idea i did it as well
- vtec solenoid as well, your usdm harness has 2 plugs, while the jdm has one, so you'll want to swap those.
- all mounts need to be swapped and i went ahead and swapped my alternator as well.

i could be forgetting something but that's the bulk of what i could remember when doing my swap.
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Old 04-28-2011, 01:42 PM
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Re: My H22A4 to JDM H22A Swap thread.

ok where is the vtec solenoid located at exactly, behind the distributor?
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Old 04-28-2011, 01:54 PM
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Re: My H22A4 to JDM H22A Swap thread.

The recipient:



Look at this crap inside the timing belt cover in the h22a that i ordered...rust n all kinda sh1t. I'm glad i decided to do the timing belt got new water pump and transfering my oil pump over new auto tensioner for it... anything else down here that needs to be replaced before i drop it in?:

better pic of all the top is pretty clean just look like some water sat in the bottom part maybe while the engine was in the warehouse after they cleaned it?


distributor differences:
h22a4 has two plugs(right circle) and external coil wire(left circle):


h22a notice the plug to the harness and no external coil wire hole

Last edited by Oceanblue; 04-28-2011 at 02:14 PM.
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Old 04-28-2011, 02:03 PM
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Re: My H22A4 to JDM H22A Swap thread.

Intake manifold differences I have noticed so far:
h22a4 3 ports for vacuum lines on left side


h22a two ports on left side and one port on right end for vacuum line


I know there are probably more differences in the manifold as to do with sensor locations etc. I haven't removed my engine yet to take note of all of the differences between them so more to come on this one. what else should I look for?

Last edited by Oceanblue; 04-28-2011 at 02:06 PM.
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Old 04-28-2011, 02:30 PM
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Re: My H22A4 to JDM H22A Swap thread.

This is the Vtec solenoid right???? sorry for the bad pic


I checked the vtec solenoid on the jdm h22a and the wire connector looks to be identical? sure i need to swap this too? or am i looking at the wrong part?

Last edited by Oceanblue; 04-29-2011 at 02:16 AM.
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Old 04-28-2011, 04:52 PM
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Re: My H22A4 to JDM H22A Swap thread.

Quote:
Originally Posted by Oceanblue View Post
This is the Vtec solenoid right???? sorry for the bad pic
yep that's it, you'll notice the difference, and it's real easy to swap.
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Old 04-28-2011, 04:58 PM
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Re: My H22A4 to JDM H22A Swap thread.

the jdm manifold is designed for RHD, the easiest way is to swap the old manifold, and injectors to the JDM motor.
The auto tensioner is fine, but is prone to failure. When you start building your motor you'll probably want to go to a manual tensioner, because the auto is less likely to hold and could fail. I've heard the auto tensioner can also cause timing to be off, but i have mine on and will change ot manual when doing a timing belt change.

Last edited by gchampaninh; 04-28-2011 at 05:00 PM.
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Old 04-29-2011, 02:14 AM
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Re: My H22A4 to JDM H22A Swap thread.

painted the valve cover today and got the engine ready to pull out tomorrow. All i lack is the motor mounts to get it lifted out heres pics of the valve cover: need to paint the DOHC VTEC letters tomorrow also:
used aircraft remover to stip it down and this brand paint to spray it. It came out pretty good i think i like it. blue with black accents:





Im gonna paint the dizzy cap black because the one i have on it now is a crap brown color. with the blue ngk wires it should match the cover pretty well.

Last edited by Oceanblue; 04-29-2011 at 02:25 AM.
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Old 04-29-2011, 02:17 AM
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Re: My H22A4 to JDM H22A Swap thread.

Quote:
Originally Posted by gchampaninh View Post
yep that's it, you'll notice the difference, and it's real easy to swap.
the wire connectors look the same to me on this part you sure about needing to swap it? i will look again tomorrow.
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Old 04-29-2011, 02:21 AM
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Re: My H22A4 to JDM H22A Swap thread.

Only real problem i ran into was getting one of the bolts off of the pipe leading to the cat convertor. the impact wrench wouldnt budge it and eventually i stripped it out with the impact. I had to bust out the angle grinder and shave it off. hope i can replace the stud here... anybody know if that stud will pop out so that I can put another one in? it looks to be alot like a lugnut stud type deal. maybe fits in like a splined bolt????:
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Old 04-29-2011, 02:26 AM
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Re: My H22A4 to JDM H22A Swap thread.

more progress pics to come 2morrow

Last edited by Oceanblue; 04-29-2011 at 03:33 AM.
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Old 04-29-2011, 08:51 AM
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Re: My H22A4 to JDM H22A Swap thread.

if the solenoid is the same then it won't be necessary, i have the f20b which had only 1 plug on its solenoid, where as the h22a4 has 2. That's why i had to swap.
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Old 04-29-2011, 09:10 AM
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Re: My H22A4 to JDM H22A Swap thread.

I'd like to see your engine bay with the NGK blue wires with the blue valve cover. Thanks.
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Old 04-29-2011, 11:46 AM
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Re: My H22A4 to JDM H22A Swap thread.

Ok i will have more pics up of it when i am done.
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Old 04-30-2011, 10:40 PM
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Re: My H22A4 to JDM H22A Swap thread.

I got my motor from Nagano also. I have the motor in my 98 sh just hooking up all the electronics. I'm keeping the jdm distributor cause my usdm motor blew up and I don't want to use the oil pump or buy a new one. When I took off my starter to replace the clutch (thought the same thi g you did) I noticed mine had a brand new twin disc carbon exedy clutch and flywheel! Then I took over the distributor and it looks like there is a aftermarket cam! Can't wait to get it started I'll post some pics soon.
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Old 05-01-2011, 04:37 PM
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Re: My H22A4 to JDM H22A Swap thread.

kool thats great wish id got that lucky
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Old 05-01-2011, 04:48 PM
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Re: My H22A4 to JDM H22A Swap thread.

my camera screwed up and i lost all the pics from yesterday but heres what we have done:
got the oil pump from the h22a4 to the h22a-had to drop the oil pan on both engines. swaped the intake manifold over and didnt notice any more differences by looking at the beside a couple of vacuum line ports. got the timing belt on very very carefully as this was my first time doing a timing belt. thanks to the downloaded helms manual. got the distributor swaped from the h22a4 to the h22a.

some pics:
finishing up the timing belt on new h22a:
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Old 05-01-2011, 04:59 PM
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Re: My H22A4 to JDM H22A Swap thread.

this is the coolant line that runs from under the IAC valve to the top port on the thermostat housing notice the differences btween the h22a4 then the h22a. this hose on the h22a interferes a little bit with the bracket for the external coil from the h22a4 if your swapping distributors.

h22a4:


h22a:


instead of swapping out the whole thermo housing we are just going to mount the bracket for the coil as best we can where we can.

update: the coil bracket fit on the h22a thermostat housing with just a little interference on the upper coolant hose just barely touching the hose and not kinking it so, i can say it is safe to stay with the h22a thermostat housing if you are switching distributors from the h22a4 to have an external coil.

Last edited by Oceanblue; 05-02-2011 at 01:49 PM.
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Old 05-01-2011, 05:03 PM
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Re: My H22A4 to JDM H22A Swap thread.

vetc solenoid on the new h22a does not have a sensor that was in the h2aa4. but there was a bolt filling the hole. we took out the bolt and place the sensor from the h22a4 to the vtec solenoid in the h22a. I see what you meant when you said the h22a4 has two plugs and the jdm h22a4 has one. there is an extra sensor in the us version h22a4 that just needs to be taken out and placed where the bolt is in the jdm h22a. see here:
h22a4:

h22a:



jdm h22a left - h22a4 right

Last edited by Oceanblue; 05-02-2011 at 02:05 PM.
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Old 05-01-2011, 05:06 PM
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Re: My H22A4 to JDM H22A Swap thread.

ok gotta get this thing put in back to work i will have more later
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Old 05-02-2011, 02:25 PM
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Re: My H22A4 to JDM H22A Swap thread.

Oil pump differences:
usdm h22a4:

with crank and tdc sensors on:


and the jdm h22a: (notice that there are no holes to mount the tdc or crank sensors. thats why the whole thing has to be swapped instead of just swapping sensors.
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Old 12-31-2011, 03:42 PM
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Re: My H22A4 to JDM H22A Swap thread.

Did you have to swap the CKP and TDC sprockets with the oil pump? wouldn't the jdm h22a need the usdm sprockets as well to get the correct readings from the sensors? I have an obdII h22a on the way and I'm wondering if the oil pump is the only thing you had to swap because of the CKP and TDC sensors. let me know what you did and how your swaps been running. much appreciated
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Old 12-31-2011, 09:30 PM
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Re: My H22A4 to JDM H22A Swap thread.

Hey Im actually swapping my h22a4 for a jdm h22a.
I just got mine in and motor is running, still have to hook everything else up

Everything you need to swap:
Oil pump
Crank sensor and the other one connected to it.
Vtec solenoid
I swapped my fuel rail. Looked to be in better condition
Do not swap the intake manifold. Jdm is suppose to be better
Just swap over your throttle body
U pointed out 2 outlets on the back of the jdm and 3 on the usdm. But the usdm has one of them capped off so no need.
Then the jdm has a side port. Just Cap it off.

Whatever you do do not forget to swap over you sprockets on the crank. The jdm do not have little markings for the sensors.
First sprocket(little one) has a back plate behind it.with 2little tips pointing outwards... Very important. And the balancer sprocket has like 10 thick metal sensor reading thingys. That is very important too. (I didn't notice that and motor would not start with the jdm sprocket for 3 days while my friend came over and asked me if I swapped that. Then bam it fired up.

Put some new plugs in it . The jdm motor will most likely have original plugs still. Mine did. Since it was only at 60k

Distributor needs to be swapped too. Good luck email me with any question martinbpoland@hotmail.com
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