Can anybody answer this??

[H22accord]

Does anybody remember the accord swap that SCC mag did in november 03? In the article it says to stay away from an h22a4 outta a 97-01 lude USDM. Does anybody have any idea why?

[H22Inside]

I'm not certain, but I think it might have something to do w/ the "open deck design" of the H22 from those particular years. An H22 engine from prior years had a "closed deck design". I don't really know what the difference is or what benefits either one has above the other. The following is from h22a.org:

"The 97, which began the open deck design (the 93-96 was a closed deck design), had a new, three-layer, two-bead welded head gasket that compensated for reduced rigidity of the block. The new piston design for the H22A features a full-floating crankpin which contributes to quieter engine operation by allowing a closer fit between the pin and the piston, thereby reducing any clatter when the engine is cold.
The 97, aside from other changes, gains an internal coil distributor instead of the older H22's external coil."

Like I said, I don't really know what benefit one has over the other.
Here's the link if you're interested.


www.h22a.org/specifications.htm (http://www.h22a.org/specifications.htm)

[matts]

its because of the ecu. newer ludes, 97 and up have obd2, while our accords, and any honda before 96? have obd1. you can do the swap, but you'll need a conversion harness or a whole lot of time to wire the thing. skunk2 is the only manufacturer that i have seen that makes the harness.

[H22accord]

Thanks guys that question has been irking me for awhile now.

[R33_Accord]

So if you had a 97 accord then youd want the 97 or newer lude engine right?

[vasponger]

correct....

[H22accord]

Here is some info I found on another site.........It has info on a obd2 engine on a 90-95 accord.


H22/accord swap faq's

H22 Swap Faq's

Updated 9/30/03

General Swap Info

Use the accord wiring harness and lengthen/modify the harness to fit the H22.

ECU Wiring For Obd1 ecu's
vtec soleniod: Pin A4
vtec pressure switch: Pin D6
knock sensor: Pin D3
Secondary Intake Soleniod: Pin A17

Use accord axles

Buy a manual for the year prelude your H22 came from, the year of the ecu you have and the car.
ex. 97H22 with p13 obd1 ecu into a 94 accord. Get a 97 prelude helms,
a 93 prelude and a 94 accord helms manual. Goto www.helminc.com to get them

Air Conditioning
To keep ac take the bracket off the F22 and put it on the H22 and use the accord compressor

For 5TH gen Only
Use 92-96 prelude timing belt side mount, keep in mind that you will have to grind it down to fit, and the rest accord mounts

Swap pin A6 with pin A11, the accord is unique from other hondas. those 2 wires control
the o2 sensor heater and egr control soleniod. They are backwards in the accord

The exhaust must be reduced in length and it is reccomended that you get a cat to match the year
header you have. (ex. if you have a 94 h22 header get a 94 prelude cat, etc) the 97+
header is different and the cat isnt the same.

To keep the Powersteering you must have a custom line made using the lower 1/2 of the accord line and upper 1/2 of the prelude line OR use a 97 prelude pump and bracket

For 4TH Gen Only
Use all accord mounts
The exhaust bolts up to 93-96 Prelude header
No pin swaping is required
There are 2 ways to do the powersteering.. either use all the accord stuff, bracket, hose and pump.. or use all prelude stuff. the prelude stuff looks and fits better but if your in a bind the accord stuff will work.. however one of the bolts on the bracket wont line up so only 2 bolts hold the bracket on.

obd2 engine in a obd1 car
ex. 97+ H22a4 into 90-95 accord
You must get an obd1 ecu, obd1 injectors and obd1 distributor.

obd1 engine into obd2 car (5 Spd Only)
ex. 93 H22a into 97 accord
Get your favorite obd2-obd1 conversion harness, skunk2, hondata, jdavis etc
Repin the distributor connector using the obd1 plug that should have come on the engine, put

Internal/External Coil Issues
If your car came equiped with an internal coil then the jdm h22 distributor will plug right
in no problem. However, if your car had external coil then you will have to modify one plug.
The plug you will need to modify is the plug that went to the stock coil. There are is a yellow
and a yellow/black wire, splice those 2 wire together. The green wire is useless, dont worry
about it

What Cap To Use
For JDM internal coil use 00 civic SI or 90-93 accord ex cap and rotor
For USDM internal coil.... DUHH!!! use 93-95 prelude vtec cap

MSD Install
For External Coil equiped cars
Cut the Plug that went to the stock coil off, splice the yellow and yellow/black
wires together, and you will also need to hookup the small red wire from the MSD
to these 2 wires.

The green wire is the trigger, connect it to the White wire on the MSD box or
the negative side of the coil if you are only adding a coil

For Internal Coil cars
You will need the MSD conversion distributor cap.
Take the coil out of the distributor. Run the 2 wires that orignally connected
to the coil out through the hole in the cap, rember which one is negitive and positive.
Connect the positive to the small red wire and the negitive to the white wire.


ApexI VAFC Settings
These settings are different for each car, use these as a baseline and get your car on a dyno

-2 from 0-4800 wide throttle
-5 from 4300-8000 wide throttle
vtec low<>high 4700
Vtec high<>low 4600
Throttle point low 10 high 50

1/4 Mile times for your Hybrid
It really depends on how well you can drive and the condition of your engine. We have seen
anywhere from mid-low 14's to 16's in accords with H22 swaps.



6TH GEN TECH
There isnt much info on 6TH gen swaps. Aperantly the timing belt side mount is an issue as
well as the immobilizer

[whoaitslen2]

Umm... Stay away from 97+ USDM motors becuase the ECU has an IMMOBILIZER! If you have a OBDII+ car and want to stick with OBDII get either a 96 H22A1 ECU, JDM P13 (JDM ECU dont have immobilizers), or chipped ECU. You may also do a OBDII to OBDI conversion but you wont be street legal. Oh and also the Type SH models have ATTS which well... sucks. Other than the immobilzer situation and complicated ATTS hookup theres nothing wrong with a USDM 97+ motor. Just the ECU and ATTS equipped trannies are what you want to worry about.