so i got a b16a obdo on my crx and i guess i blew the motor...and i have a b16b ctr motor sitting in my garage and i was wondering if my b16b will work on a obdo harness???PLEASE HELP THANKS

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b16crxtune &raquo;</TD></TR><TR><TD CLASS="quote">so i got a b16a obdo on my crx and i guess i blew the motor...and i have a b16b ctr motor sitting in my garage and i was wondering if my b16b will work on a obdo harness???PLEASE HELP THANKS </TD></TR></TABLE>

I would get the whole thing tuned, you'd need the OBD0 computer from the B16, and you'd have to swap over all of the OBD0 components like the injectors, and distributor.

I'm not 100% on the sensors on the engine, I know some are different though.

 

Use a OBD0 dizzy, your OBD0 harness (MPFI), add vtec wiring. Then get an OBD0 ECU chipped to a CTR fuel/timing maps. It should be exactly like a B16A swap other then that. Remember to use OBD0 injectors, your D16 ones flow the same as your B16B OBD2 injectors.

 

i have a obd0 b16 distributer, pr3 obd0 ecu chipped. $250 shiped

i also have a set of obd0 injectors i think. for $30 ill throw them in if i have them still.

 

Or you could convert the CRX to run the B16B ECU. MANY people are intimidated by this due to the OBDII plugs. But the B16B ECU is really more of a quasi-OBDI ECU (at least if the ECU is pre-1999). In other words, it uses OBDII plugs, but runs like an OBDI ECU. I did this same conversion on my ITR CRX. And it was no harder than any other OBDI conversion.

 

Aso, keep in mind that the B16B doesn't have a VTEC pressure switch. If you want to run it with a different ECU, you are going to need to swap the VTEC solenoid holder from the B16A, as the B16B piece does not have a tapped hole for it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StorminMatt &raquo;</TD></TR><TR><TD CLASS="quote">Aso, keep in mind that the B16B doesn't have a VTEC pressure switch. If you want to run it with a different ECU, you are going to need to swap the VTEC solenoid holder from the B16A, as the B16B piece does not have a tapped hole for it.</TD></TR></TABLE>

If he has a chipped ECU he can just burn a chip that doesn't look for it. If he also has a chipped obd0 ECU he can burn the PCT ecu bin file onto a chip and stick it into his OBD0 ecu.

I wish people knew wtf a chipped ecu really meant and what you can do with it. You can avoid all sorts of wiring and you can eliminate sensors, like O2, vtec oil pressure, knock, you name it. You can even chip a 2 step into it, which would be awesome if you are planning on tracking the beast.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b16crxtune &raquo;</TD></TR><TR><TD CLASS="quote">so i got a b16a obdo on my crx and i guess i blew the motor...and i have a b16b ctr motor sitting in my garage and i was wondering if my b16b will work on a obdo harness???PLEASE HELP THANKS </TD></TR></TABLE>

I think if you're looking for a more simple answer, yes you can.

Just transfer the distributor and vtec solenoid.

It would be in your best interest to get your OBD0 ecu chipped, though.

ludesrv: why can't he just use the OBD2 injectors?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turkishEF &raquo;</TD></TR><TR><TD CLASS="quote">

I think if you're looking for a more simple answer, yes you can.

Just transfer the distributor and vtec solenoid.

It would be in your best interest to get your OBD0 ecu chipped, though.

ludesrv: why can't he just use the OBD2 injectors?</TD></TR></TABLE>

OBD2 injectors don't respond well to OBD0 ecu. They are 2 different types of injectors from 88-91 and 92-present, saturated vs. peak and hold. Use the injectors that your ECU calls for, OBD0 ecu OBD0 injectors, OBD1 ecu, OBD1-2 injectors.

Besides, he could use some D series injectors of an Si manifold, very easy to find.

 

Well correct me if i am wrong, but
--JDM b16's with the PR3 came with saturated (no resistor box)
--while USDM EF's with the d-series are peak and hold injectors(w/resistor box)
--OBDII came with saturated as well (no resistor box)

I only say this because i am running a PR3 on a B16A2 with OBDII injectors. (no resistor box)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turkishEF &raquo;</TD></TR><TR><TD CLASS="quote">Well correct me if i am wrong, but
--JDM b16's with the PR3 came with saturated (no resistor box)
--while USDM EF's with the d-series are peak and hold injectors(w/resistor box)
--OBDII came with saturated as well (no resistor box)

I only say this because i am running a PR3 on a B16A2 with OBDII injectors. (no resistor box)</TD></TR></TABLE>

jdm b16a came with peak and hold (with a resistor box)
usdm obd0 (88-91) came with peak and hold also
obd1 + obd2 came with saturated

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dbiker207 &raquo;</TD></TR><TR><TD CLASS="quote">

jdm b16a came with peak and hold (with a resistor box)
usdm obd0 (88-91) came with peak and hold also
obd1 + obd2 came with saturated</TD></TR></TABLE>

OBD0 are peak and hold. The ECU was programmed around those injectors. Changing the maps don't mean you can change injectors. The wiring system can be effected (burn wires) if you use the wrong injectors. It will also run rich, and be proned to break down.

Doing it correctly and getting the correct injector is the only option. Besides, if he is already MPFI he can use his existing injectors!

 

I stand corrected.

OP, sorry for the side track.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turkishEF &raquo;</TD></TR><TR><TD CLASS="quote">--JDM b16's with the PR3 came with saturated (no resistor box)</TD></TR></TABLE>

Only if the PR3 came from a 1992-1993 Integra.

 

I should also note that I would convert to OBDI or use the stock CTR ECU for gas mileage reasons alone. While CRXs with 1G JDM B16A swaps get mid-high 20s on the freeway, my 1997 ITR swap gets about 30-33MPG using the stock P73 ECU. And with premium fuel at around $3.65 a gallon here in Northern California, this makes a HUGE difference.