alright i have a automatic dx for my commuter i have a race hatch that is not complete so i want to give this car a little more go. my friend is swapping his 2000 honda civic ex and his car is a automatic so he said he will give me the motor and tranny for real cheap so can anyone tell me what i will need to complete this swap .i have the engine speciications below i think 127hp is alot better than 92!
this is what i have now:
D15B2 1493cc
4 cyl, 16 valve
SOHC
9.2:1 c.r.
PGM-F! (DPFI)
92 bhp @ 6000
Redline: 6800 rpm 89 lb-ft @ 4500
this is what i will have after:
D16Z7 1590cc
4 cyl, 16 valve
SOHC VTEC-II
9.6:1 c.r.
PGM-FI (MPFI)
127 bhp @ 6600
Redline: 7200 rpm 107 lb-ft @ 5500

 

someone help me out!

 

come on help me out someoen out there give me some info!

 

d16z7? I think you mean the d16y8, right? I have a d16y8 SOHC VTEC out of an '99 EX in my CRX. Don't buy the tranny from your friend, it won't work... you can use your civic's tranny or an Si tranny. Do a search on this site for d16y8 and you should find a lot of the stuff that people told me. Also try http://hybrid.honda-perf.org/tech/sohcvtec.html That was also a big help.

 

thanks alot yeah i do mean d16y8

 

what is the difference you feel in your car?

 

one more question willmy automatic work? caus ei dont feel like converting it to a stick i already have my other hatch

 

Huge difference... from a 92hp 1.5 to a 127hp 1.6 sohc vtec

 

what will i need to make the swap complete i can use my tranny right? my axles? it bolts right in right? do i need a wire harness? should i get a vtec controller? damn i really want a better faster commuter

 

I was planning to do the same exact swap in a 89 hatch I just picked up. You have to convert that ex motor to obd1. There is a lot of wiring involved and you need to pick up a vtec ecu. This swap is easy, but w/ a newer motor you run into more problems. It is better to swap in a 92-95 sohc vtec.

 

You convert the ex motor to obd0. It's the same amount of wiring as the 92-95 and the crx/civic's distributor actually fits better on the '96-00 d16y8 with the normal range of adjustment.

 

why wont the ecu on the 2000 civic ex work? can someone send me a webpage on how to wire obd0 thanks alot! why not get a motor with less miles and more power?

 

"better to swap in a 92-95 sohc vtec" *bullshit* It is exactly the same as doing the z6 swap.

Yes you can use your tranny. Yes you can use your wiring harness.....
The reason you dont want to use the obd2 (y8 ecu) is because there is more **** (Sensors, etc) that need to be wired. Plus obd2 ecu's are not reprogrammable.

IF YOU WANT TO ACTUALLY SEE THE FULL 127 HP THIS IS WHAT YOU WILL NEED:

d16y8 motor
p28 ecu (92-95 sohc vtec ecu)
obd0-obd1 wiring harness converter (get with blown90hatch or build your own)
A two prong toggle switch
and some extra wire.

***Mind you this is for a vehicle equipped with MPFI*****
This is assuming you are going to use the y8 intake manifold and fuel rail with the obd2 injectors, and obd2 distributor.
1. Install y8/stock tranny combo into your car. YOU must use the drivers side upper motormount and bracket from your original motor. You will want to grind a little off the edge to prevent the timing belt from rubbing on it.
2. Disconnect fuel injector resistor mounted on the drivers side wheelwell, solder the 5 wires together. (I believe they are black/red if i am not mistaken)
3. remove the fuel injector resistor clips one at a time and repin the two wires with the obd 2 injector clips. Note the common wire on the obd2 is black/yellow vs. black/red from the civic/crx. (At least on the 91's).
4. Repin the distributor. You will notice the colors coming from the distributor are the same color as the engine side harness. (Match like colors)
On the si harness there are two white wires, the thicker of the two wires goes to a black/yellow??? (This is off recollection, it will be the last wire left) wire on the dist side.
5. Plug in obd0-obd1 converter harness and connect p28 ecu.

If you purchase the converter harness from someone (blown90hatch) it comes with the 8 wires needed to connect labeled clearly.
1. run 4 wires from the 4 wire o2 sensor on the exhaust manifold to the ecu
2. run 1 wire from the vtec solenoid to the ecu
3. run 1 wire from the vtec oil pressure switch to ecu
4. run 1 wire from the knock sensor to ecu (I have been told you dont have to connect this??? I did anyways)
5. Last wire from ecu needs to go to pin one of the toggle switch, pin 2 goes to a chassis ground. This way when the switch is on, and there are engine codes the check engine light in the dash flashes.

Then simply plug in the iacv, intake temp sensor switch etc from your motor to the new one.

One problem I ran into was making the crx throttle linkage work with the y8 manifold, so I had to be creative. Also you need to come up with a different air intake tube from the airbox to the throttle body.

Mind you this was going from a 91 si to a 98 y8 motor. So your swap may vary a little bit.

 

Very good info CRBMAN.

 

Forsure He has pretty much summed everything up

 

d16y8 motor (got it)
p28 ecu (92-95 sohc vtec ecu) (need it)
obd0-obd1 wiring harness converter (get with blown90hatch or build your own) (need it)
A two prong toggle switch (need it but why?)
and some extra wire. (need it but why?)
what kind of times you think i would be running with this motor in my 91 hatch w/ intake bored out throttle body header full exhaust adn a chipped ecu remeber it will be a automatic
blown90hatch help me out with some of the items needed if you can!

 

anyone?

 

You will need the toggle switch to check your codes. The OBD0-to-OBd1 conversion harness uses the OBD1 ecu which doenst have the LEd to check the codes, so you need the toggle to check them. There is a wire comming off of my harness that you connect to the toggle switch...when your check engine light comes on, flip the toggle switch and the check engine light on your dash will flash the code. You will need the extra wire to run all the Vtec wires into the engine bay. Also, you will need to convert the DX harness to Si/ZC first. I can help you with the OBd0-to-OBd1 harness and I can covnert the Dx harness as well. LEt me know. Turbo_EF@yahoo.com

JAson

 

Sorry for the huge azz pics. I guess I need to resize them things.

As jason mentioned about the switch, and wiring. You have to add wires to connect the 02 sensor, vtec soleniod, oil pressure sensor, etc to the ecu. These wires were not installed in your 91 cause this stuff wasnt on the 91 motor. You have to run these extra wires from the engine compartment to the passenger side floorboard.

One other note, as you can see in the pics 1 & 2, the air intake tube that runs from the stock airbox to the t/b is not long enough. Short by about 2 inches. I have ordered an aem cai to install in place of it. To extend it an extra 2-3 inches I am going to take the rubber tubing and buy a longer piece from a shop that sells intercoolers and stuff.

One other problem I ran into was with the Intake temp sensor. On the civic/crx, it is mounted in the intake manifold, above the alternator. On the 96+ ex it is a sensor mounted into the air intake tube that runs from the airbox to the throttle body. I purchased the 98 civic ex intake temp sensor from the local honda dealer for 16-18 bucks. All you have to do is drill a small hole into the tube, place the sensor in and silicone it in place. The wiring clip for the 96+ex must be used.

When I started researching this swap, I got some of the same answers "Use the 92-95 motors." I credit blown90hatch, kenji, and stormin matt for the fact that the engine started and still runs just fine. Without their wiring help and expertise, I couldnt have done it.

I have been meaning to put together a how to webpage, but untill my roadrunner connection gets installed this week I am internet less at home . School and work permitting, I will get it up and post links asap, cause I know I have answered several emails regarding this exact swap.

Steven

 

so Blown90Hatch will you get me all the wiring harness's i need to make this swap complete adn if so how much?

 

HondaHb916, I can convert your Dx harness and make you the OBd0-to-OBd1 conversion harness as well. Price is 125 for the Dx conversion + harnesses and 150 for the OBd0-to-OBd1 covnersion harness. Email me for further questions.
Turbo_EF@yahoo.com

Jason

 

Installing the engine is easy. Anyone know where I can get a D16Y8 for a decent price? That's the hard part.

 

blown90hatch where you located?

 

is this the same procedure for a 89 HF? which axles am i suppose to use and i can keep my current wiring harness right? Do i need to change the hubs to a si/dx hub? I'm planning to do this to my HF since i'm getting everything for free. Can I use the tranny that comes with the d16y8? Thanks, i'm a newbie when i comes to hybrids.

 

No you cant use the sohc vtec (d16y8) tranny. The mounting points are different, and it is hydraulicly activated rather than a cable tranny like in your car.

I used my d16a6 (stock crx si) tranny and stock axles. The only thing you are changing is the engine, and the block is almost identical to the 1.5/1.6 that comes stock in the crx. Therefore you could use the HF tranny and axles if I am not mistaken???? Somebody correct me if I am wrong. I dont know what the gearing is like in an hf tranny though????

As far as the wiring harness, if your car is mpfi, yes you use your wiring harness.

Steven