Hey guys,

I am kinda new around here i was hoping some one can point me in the right direction with this i have my stock 1989 civic SI *Obd0* that i have got a D16y8 in but not running the Vtec and i want to try and get this going, looking for the most Cost effective, Most reliable. any help would be Greatly appreciated

 

Canada eh.
alright, get an obd0-obd1 jumper harness, p28 ecu, distributor from a 92-95 civic non vtec mpfi. instructions come with the jumper harness to install and hook up vtec. running the injectors in the d16y8 means you need to delete the resistor box, unless you've already swapped in the d16a6 injectors or whatever. this is the most reliable means of doing it, probably cheapest depending on where you get the parts from.

 

I know that the Motor came out of a CRX so i would think the injectors have been changes yes? so i will have to Get a obd0-obd1 jump harn. and a p28 ecu and a 92-95 non vetec dist. why a non vtec one if i may ask? does the jumper wire in the solenoid?

 

Most cost effective?

Find a chipped 90-91 PM6 ECU, have a chip burned with a vtec switch on the AC signal line at any RPM you choose, plus you can raise the rev limit to 7800 while you're in there.

Or keep an eye out for Zdyne OBD0 ecus on Ebay that already to it.

 

for the d16y8, it is technically a obd2 motor
the 92-95 non vtec distributor bolts up to the y8 with no mods
the d16z6 distributor doesn't fit right

 

so im looking for the TD-41U distributor??

 

D16A6 dist works too on a Y8, from what I've read.

 

yeah that is what is on it right now my stock dist.

 

there is a specific reason for not doing that... can't remember off the top of my head... my research told me not to though... if i remember to, i'll go check out what the part # is on my dizzy.

 

As said above, my mechanic had a Zdyne box for sale awhile back might still have it. I have also had friends use chipped B16 obd0 ecu's PR3 PW0

 

so im looking at this dist and this wiring adding the vtec/4 wire o2 plugs. and something along the lines of this ecu anyone confirm that i m on the right track? does the Ecu have to be chiped on no if no ill just grab on from the Wreckers. ??

 

do it right. convert to obd1 using a conversion harness of your choice, get a 4 wire o2 sensor, p28 manual ecu (or convert an automatic ecu to manual, not hard), and the y8 dizzy so everything is PROPER.

the injectors in your car will work fine now, if you currently have a resistor box leave it, if not then you're running either obd1 or obd2 injectors already and either way you don't need the resistor box.

either buy a dizzy adapter harness or make one your self, or like i did de pin the obd0 plugs and re pin the obd2 plug so it's plug and play.

the obd0-obd1 conversion harness should come with enough wires to completely by pass the obd0 o2 sensor, so you can make a seperate harness for your vtec plugs and 4 wire o2, i'm using an ebay conversion harness for almost a year now and it works fine gets the job done no problems.

 

obd0 pr3 your a6 dizzy bolts up and wire the vtec

 

do you mean use an obd-0 jdm b16 ecu? if so he'd have to get custom o2 sensor bungs welded to his header since the ecu uses 2 o2 sensors to control the a/f ratio, one read's cylinders 1&3, the other reads 2&4. he may have to wire up his knock sensor since i believe that ecu looks for knock? not certain on that, i have never owned or worked seriously on any b series engines yet.

then there's the issue of the fuel maps are for a different motor, different compression, two cams vs one, higher rev limiter, etc.

o/p i forgot to say no the ecu does not have to be chipped you can run a stock p28 just fine.

 

Convert to OBD1 and do it right, like DCRB said. No you don't need a chipped ECU, a regular P28 will be fine. Boomslang makes harnesses and they have good instructions as well.

 

yeah its the obd0 b16 ecu he said the most cost effective way and that would be it he don't need a new dizzy or ecu or jumper if u run a p28 its still not the original y8 computer so you maps will still be off

 

OH OF COURSE it makes a huge difference, that is why most people run them when doing a Y8 swap, since it is so damn similar to a Z6.

obd0-obd1 conversion harness
either y8 dizzy or 92-95 obd1 non vtec dizzy
p28 ecu

I bought my harness from streetlightz on eBay. comes with good instructions too. and he doesn't sell harnesses to fund his k20 swapped CRX or whatever (not a massive markup)

 

hey guys i came Across A td-41U dist(free of charge ) from a 92-95 but i cant get the car to fire with is i have re pinned it to my Obd0 wiring but still no go could this be because i don't have the p28 ecu and then ecu that is in there sending/Receiving the wrong signals from the dist?

This dist should bolt right up as-well yes?

 

that dizzy should bolt up, it is obd1. you need an obd1 ecu to run it.

I don't understand what you're saying...
d16y8 is not firing because you're trying to run it with an obd0 ecu with an obd1 dizzy???

 

lol it started up for A bit ran Terrible but thanks for the info i will have to get me a P28 seeing how i'm getting a p28 i'm just going to get the d16y8 dist instead of this td-41u i was just trying to get it to run so i can save some money for the ecu/wiring because my Truck costing me around 400$ in gas a month where my civic would be around 120$

 

hey boy's

Quick little update need a some input aswell got my chipped P06ecu from rywire aswell as the wiring harness and vtec/4wire o2 sensor Harness. trying with The TD-41u dist. Started up right away but my Idle is around 2000. And i cant Rev past 4000 hits like a Rev limiter. (limp mode Perhaps Not spitting Error codes at this time need to hook up a switch so i can see them.) any thoughts would be helpful


Thanks