This swap happened a long time ago for me but i will give a rundown of everything that was swapped in order to make this work correctly to the best my memory can serve me.

You are essentially making the external parts of the JDM H22a, OBDII.

This means taking the following parts from the USDM OBDII motor and swapping them to the JDM h22a:

complete intake manifold (fuel rail, injectors...etc) - unless you want to use th 345cc injectors and wire the injector clips and resistor box in.

Exhaust manifold
distributor
COMPLETE oil pump assembly including the CKP (crank sensor)
lower timing cover
oil pan and baffle
intermediate shaft (halfshaft) - the one that bolts to the block
and if i remember correctly, we swapped the thermostat over as well.
OBDII balancer shaft gear

If you are going to use AC and power steering, the pump and the compressor along with their respective mounting brackets will need to be swapped over as well.

While i did this conversion i also swapped to the h23 manual tensioner which i recommend people to do since you already have to take everything apart.

For others who have done this swap, if i left anything out let me know.

NOTE:

it is your choice to run the OBDII ecu or to convert to OBDI via conversion harness. However, if you decide to convert to OBDI, GET THE ENGINE TUNED.

Do not put a chipped ecu in there without setting a tuning appointment. Whether it be street or dyno tuning, preferably both.

25 Hondas and Counting!

I would definitely switch to the obd2 oil pan, the aluminum one is way better than the steel crap on the 4g.

Its easier to just swap over the manifold than it is to swap rails and injectors over then wire the OBDI clips onto the OBDII harness. The lower timing cover doesnt fit correctly once you swap over the oil pump.

The intermediate shafts are different but i cant remember about the thermo

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OBD2 4g oil pumps should be different due to the crank sensors.

Blake, obd2 injectors should fit in the obd1 rail/manifold.

i was just wondering if the 98-up pump could be used for some reason, there is a local dude parting a 2000 model, and i was hoping the crank snout where the oil pump slides on would be similar, but the crank seals are different numbers too...damn 97 car

25 Hondas and Counting!

of course they fit, when i was running the blacktrax spacer, i was using a JDM manifold.

i'm saying that since the engine is already out, its easier just to take off the 10 or so nuts and swap everything in full and be done with it.

i am running a 98 pump on my block.

My bad, yea I meant 96.

92-95, 96-97, 98-01 oil pumps are all different.

Please help one of our own

good call

HUGE H22 partout sale and other h-series parts
http://www.hondamarketplace.co...44636

Please help one of our own

update...

Melling m232 pump for 96 h22a1...WILL NOT WORK...

it is mislabeled, and is for SOHC F-Series engines....it has no provision for the H-series auto tensioner...

25 Hondas and Counting!

yeah, the whole emissions thing is my problem too. i still have yet to get a confirmed answer and don't want to be the te$t dummy on this one...

Quote, originally posted by John Bell »

I'm gonna poke you if you don't wake up.

Oil Pump and crank sensor

Thermostat

Alternator

and I bought a conversion wiring harness instead of hacking it up

I also replaced all the seals and timing belt tensioner along with the timing belt

Other than those things shes been running like my old stock H22A4 without having to switch the intake manifold, Now im just a little bit curious as to why you did that??