imported_Samiam

hey guys,

This may be common knowledge, but i've searched the web and can't find a straight answer. Most swap info on the web is about a non-vtec to vtec swap..

Can these engines (D15b7 ('93 LX) and D16y7 ('98 DX)) be swapped as a direct bolt in? no wiring issues etc? seeing that the D16y7 is also a non vtec would the wiring be the same? D16y7 engine i can get comes without the ecu and harness...can i use the ecu/harness off the D15?

any help would be appreciated...

Thanks

imported_InVaDeR_HB

I think the 92-95 motors are OBDI and 96+ are OBDII so u might run into some problems....not to sure tho....

porser

Hi Guys, Looking for the exact same info.
I have a 94 Civc auto and my D15B7 with 409k on it needs a head gasket. I can get the D16Y7 motor cheap.

If I use the original distributor will it be a straight swap?

Any help Greatly appreciated.

bbarbulo

iTrader: (2)

no you cannot

need the engine harness, and then have your ECU chipped with the D16Z6 program sans the VTEC

jmiles242

OK, this is something I am interested in also, but mainly whether a mount kit is required to drop a D16Y7 into a 92-95 chassis?

bbarbulo

iTrader: (2)

no, using the mounts from the two cars should work just fine. I'd advise to have both sets of mounts handy if you can, but I see no problem here.

porser

Hi guys, Thanks for your quick replies.
However I spoke with the guy that has the motor and its not a
D16Y7 but it is a D16Y8 127 hp V-TEC-II motor.
Now will this thing bolt in or am I loking at a fist full of changes?
Would I be better off trying to trade for the original D15B7?
I dont mind doing some minor modifications because I do like a little horsepower.
Ex vehicles include Kawasaki KZ 1100R With 1260cc Big Bore
High 10s quarter 138 mph in street trim minus mirrors.
Also 1987 Buick Grand National Purchaced new.
Alas I am older and slightly more responsible and should try to keep my license valid.
Please Help!!

bbarbulo

iTrader: (2)

The D16Y8 is a popular swap. Again the wiring will be slightly more involved, you'll have to wire up VTEC in the car and you can use a Si 92-95 computer to drive the motor. You'll just have some splicing to do, that's all.

bbarbulo

iTrader: (2)

If he does have the ECU... then you'll have to get the adapter harness to plug it in. Depending on the harness, you'll likely still have to wire up VTEC on your own. The GN is a sweet car, why in the world would you go to a Civic from a GN monster. As I kid I had always dreamt of owning one... all black and shiny. The thought of it is bringing back a lot of memories.

porser

Hi Guys,
Again Please treat me as if I was a complete idiot.
Where would I be able to get the harness adapter and ecu?
Does the VTEC have to be wired in right away or can I get the thing mobile and then make the wiring changes later?
I am a controls technician so I'm not afraid of wires.
Would looking into the "mini - me" help me out any?
Roughly $500 in the budget.

bbarbulo

iTrader: (2)

$500 for the whole swap, or $500 for the mini-me?

if you are no noob to wires, then it would be possible to simply get the ECU plug and do the wiring yourself. It would save you some money IF you are able to just obtain the plug .

You can make the thing run and make the changes later. However it won't be pretty

porser

I've got $500 budgeted for the whole swap.
I can get the complete engine for $100.
So that leaves me with $400 for the rest.
Is there a website that would give me detailed info?
I am confused(too many late nights at work), when you stated
that I would need a harness adapter, is that for the ecu or just for the oil pressure sensor?

bbarbulo

iTrader: (2)

ECU man

Ok, there are two ways to go.

1. use your ECU and have it flashed with new software

2. use the new ECU and rewire the car

your ECU and the new ECU have different plugs. That's why you need an adapter.

Now, depending on what engine you decide on, it may eliminate some choices. So decide first, D16Y7 or D16Y8... or D16Z6? What are you gonna get? It's too much work and too confusing for you if I start explaining each one.

porser

Its a D16Y8.
Where would Iget it flashed?
or where can I buy the harness adapter?
Which way is cheaper?
Thanxs

bbarbulo

iTrader: (2)

Ok, now that you chose an engine, that eliminates the possibility of using your stock ECU since it doesn't have provisions to activate VTEC.

Now you have two other options.

Use a D16Z6 92-95 EX or Si ECU or use a D16Y8 ECU. The first one will be a direct plug in, and will only require a couple of wires to be added in order to run the motor... like knock sensor and VTEC solenoid. It will be easy, since you can buy a virgin ECU for about $100 or so and then pick up the wiring diagram for both cars (D16Z6 and D16Y8) and then just match up the pinout. The D16Z6 ECU shares the same plugs are your car, so it plugs in. You'll have to splice the engine harness into your chassis harness making sure you hook up every wire to the pin it's expected to be at by cross-referencing the two wiring diagrams. There may be one or two sensors on the D16Y8 that you won't be using possibly since you are going to an older ECU, which is fine. The D16Z6 ECU will run the D16Y8 perfectly.

This way you don't have to worry about flashing the ECU nor getting an adapter. You just have to splice the engine harness to the chassis harness and plug everything it. This is a great swap and is very easy to DIY.