i just bought a 91 civic hb it came with a dohc zc but it had a spun bearing in it. no problem. he gave me a extra block and crank. now i have a 90 crx i did a ODB0 to ODB1 converstion so i know how to do it and what in turns. i will be putting itb in my crx so and i have an extra set. it's easier to tune a ODB1 so my question is...

how difficult it is to convert a DOHC ZC ODB0 to ODB1? and do you have to do almost the samething as if you was doing it in a SOHC.

thank you.

 

the hardest part will be finding a obd1 dohc ZC distributor they are pretty rare.

 

ya you swap it like any other obd0 to obd1. just need the dizzy like which said above is rare but available. its a TD-43U kinda pricey aropund 200 + and ya cant get them at the parts stores atleast not around here just type in TD-43U into google it will bring up some sites.

 

basically same as converting SOHC to OBD1 - you just need a TD43U distributor - the best ECU is the JDM P29 which uses a one wire O2 sensor - anything else, like P06 needs 4-wire O2

good distributor price here:
http://www.tigerjapanese.com/i...mid=1

 

thanks everyone. for the input. the price dosen't bother me. the question here is if it's ODB1 will i be able to use crome or etune?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jlicrx &raquo;</TD></TR><TR><TD CLASS="quote">basically same as converting SOHC to OBD1 - you just need a TD43U distributor - the best ECU is the JDM P29 which uses a one wire O2 sensor - anything else, like P06 needs 4-wire O2</TD></TR></TABLE>
i'm a bit puzzle cause when i swap to ODB1 i lose the injector relay. if i do chip my ecu(since it has the PM7 chipped) will i lose the injector relay.

i think i should ask does anyone can link me to diy type link/thread?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by remoer &raquo;</TD></TR><TR><TD CLASS="quote">thanks everyone. for the input. the price dosen't bother me. the question here is if it's ODB1 will i be able to use crome or etune?

i'm a bit puzzle cause when i swap to ODB1 i lose the injector relay. if i do chip my ecu(since it has the PM7 chipped) will i lose the injector relay.

i think i should ask does anyone can link me to diy type link/thread?</TD></TR></TABLE>
if you use the OBD0 injectors, you need the resistor box - if you use OBD1 injectors, you don't use the resistor box - you can use either type injectors

 

thats pretty sweet thank you again jlicrx.