93 series LS B16A conversion problem

[FEL12X]

Hi guys
need some help here

got a 93 LS B18A

engine loom seems to be OBD1 on the car now

and i have a B16A from 90 CRX..(just engine, no loom , no dizzy just ITM, HEAD, BLOCK)

P30 ECU (i think its OBD1) from EG B16A (EG6)

what is the easiest way and cost effective way to do up this car?

was thinking just chuck the old engine out (too many KS) and put B16A in, but will my loom and ECU match with it?

any help will be good
:thumbsup:

[FR33K]

dude im not sure if you got my PM but you cant put an older engine in a newer car

[tinkerbell]

swap the sensors of the old engine onto the B16A block and swap the B18 engine harness onto the B16A

it should be fine...

FR33K - you can put and old engine in a newer car, as long as it uses the newer emmissions controls that came on the car...

[tinkerbell]

might be better with a B16A gearbox, but you can use the B18 one, it will jsut feel gutless as teh B16 has too little torque...

[FR33K]

oh ok.. interesting.. didnt know that

i thought the head was stamped with the year model of the engine, therefore you couldnt go backwards ?

[FEL12X]

hm...far as i know GPC did many engine conversion and pretty sure plenty of cars using engine from older car but dont know if they legal or not...

i was going to use the std gbox first as i dont have enough $$$ atm

how about if i just use the head on the b18A block...
will that still consider using an older engine on a newer car?
thanks for all the info tinkerbell

[tinkerbell]

hm...far as i know GPC did many engine conversion and pretty sure plenty of cars using engine from older car but dont know if they legal or not...

i was going to use the std gbox first as i dont have enough $$$ atm

how about if i just use the head on the b18A block...
will that still consider using an older engine on a newer car?
thanks for all the info tinkerbell

sounds like you need to speak to the RTA if you want it to be 100% legal...

[ECU-MAN]

make sure you get a OBD0 distributor if you have an OBDO engine.

[tinkerbell]

hmmm, but he has on OBD1 car ecu-man? why does he need a obd0 anything?

[ECU-MAN]

hmmm, but he has on OBD1 car ecu-man? why does he need a obd0 anything?

he says he has a B16A from a 90 CRX, sounds like its OBDO,if it is OBDO a OBD1 distributor will not work on his engine.

[tinkerbell]

why not? seriously?

if the dizzy matches the harness & ECU, the engine is of no relevence...

[ECU-MAN]

if the dizzy matches the harness & ECU, the engine is of no relevence...

have you ever tried to make a OBDO dizzy fit a OBDI engine ?

I did once, to no avail. swapped connectors and all.

the OBDO distributor has the hole drilled out for the cam runner about 30deg out than the OBDI dizzy,

engine will idle but run like shit and timming way way out.

dizzy bolted up no probs, just could not get the timming with in spec.

[tinkerbell]

i think you have seriously misread the whole post...

it is:

OBD0 - B16A block
OBD1 - distributor
OBD1 - engine harness
OBD1 - ECU
OBD1 - B18A

swap any OBD1 sensors off the B18A onto the B16A and you are set to go...?

[dc2rrrr]

we did the same conversion with my girlfriends 90 ls integra. It was a obdo b18a motor loom ecu etc factory. Simply fitted a eg obd0 b16a retained standard b18a loom and added a vtec wire to a jdm ls obdo vtec ecu.
piece o cake. Still using b18a box. Yes is very long and slow box. Will be fitting a b18c box shortly. Good luck

[tinkerbell]

90 LS is different to 93 LS

it is an anomaly Honda...

[ECU-MAN]

i think you have seriously misread the whole post...

it is:

OBD0 - B16A block
OBD1 - distributor
OBD1 - engine harness
OBD1 - ECU
OBD1 - B18A

swap any OBD1 sensors off the B18A onto the B16A and you are set to go...?

how so


what Im saying is the OBD1 distributor wont work in a OBDO engine with OBDO camshafts.

not electronicly but mechanicly.

[tinkerbell]

well, FYI i used an OBD0 dizzy + ITR camshafts in a OBD0 B16A head...

without a problem?

EDIT - or are OBD2 different to OBD1 as well?

[tinkerbell]

AFAIK - you need to match the 16 tooth dizzy to the OBD0 and the 24 tooth dizzy to the OBD1...

that is the most important *mechanical* difference i know between OBD0 & OBD1...

EDIT - and this ends up being electronic in the end anyways...

[FEL12X]

so , i cant use my obd1 dizzy from my b18a on the b16a?
and hows my ECU? i can still use that or not?

[tinkerbell]

so , i cant use my obd1 dizzy from my b18a on the b16a? well - i reckon you can
and hows my ECU? i reckon it's fine i can still use that or not?

see bold...

need to wait on ECU-MAN to confirm or deny...

[FEL12X]

thanks heaps guys

need this to be done as my B18A is dying

[NTR16N]

hey dave..
im still waiting to get my b20 up and running again..
reason being i have to wait for my OBD0 dizzy to come back..

My 92/93 LS has the OBD1 harness as well.. one off year model..
head and dizzy OBD0..
solution.. an OBD0 dizzy with and OBD1 plug on the end..

Hope that helps anything

[ECU-MAN]

see bold...

need to wait on ECU-MAN to confirm or deny...


I got a OBD0 dizzy here,

Ill compare it to a OBD1 dizzy tomorow and see if its the same as what I experienced a while ago.

Ill get back to you on Sun

[tinkerbell]

hey dave..
im still waiting to get my b20 up and running again..
reason being i have to wait for my OBD0 dizzy to come back..

My 92/93 LS has the OBD1 harness as well.. one off year model..
head and dizzy OBD0..
solution.. an OBD0 dizzy with and OBD1 plug on the end..

Hope that helps anything

yes, but u r running microtec to suit a 16 tooth obd0 dizzy ;)

that is why you need obd0 dizzy...

[Edgeauto]

the LS changed from OBD0 to OBD1 in the 92-93 model . Would be better to use the B18 intake manifold as is has a bigger throttle body and the injectors are different than the Gen1 B16.Just use trailer wire to add the extra wires(vtec and ks)

[FEL12X]

thats so complicated man..

before i was just thinking i can use the obd1 dizzy from my car, but seems like i need a obd0 ones....still waiting for the result from ECU MAN

also, i dont think i can use the B18A intake right? seems to be a different head and it wont fit, am i correct?

[Edgeauto]

as far as i am aware all B seriers have the same intake manifold stud pattern except B18C3 (VTiR INT)If you use the OBD0 injectors you will need to use the resistor block too!

[tinkerbell]

B18A manifold on a B16A is a v.bad idea, if it actually could be fitted...

[ECU-MAN]

a while ago ( about 10 years ago ) we fitted a OBD0 dizzy on a AUDM OBD1 CRX, I swapped the connector to suit the OBDI harness. the engine started and ran poorly, timming was way out and we couldnt get the timming right.



the bellow picture is of a OBDI dizzy on a OBDO B16A

http://b16a2.kicks-ass.net/tech/OBD0-V-OBDI009.jpg



the engine is set to spot on TDC. you can see the rotor isnt center with the position of lead 1.

this may be the problem why we couldnt use the OBDO dizzy, or it could be the fact that the OBDO dizzy has 16t CYP like tinkerbell has mentioned.

since this bad experience I havnt mixed and matched dizzy with the thought in my mind that it would not work.

maybe it would work if you used the correct ecu for the Dizzy.

just be carefull with your distributor choice is what I was trying to say in my 1st post in this thread.

[FEL12X]

thanks heaps guys

will see what dizzy i can get

so i better off a OBD0 dizzy, ?

[tinkerbell]

so i better off a OBD0 dizzy, ?

**** no.

[tinkerbell]

swap the sensors of the old engine onto the B16A block and swap the B18 engine harness onto the B16A

it should be fine...

to run with VTEC, you will need to use a VTEC ecu and run 3 additional wires (VTEC solenoid, VTEC pressure, Knock sensor)

[FEL12X]

thanks angain tinkerbell, u been very helpful

ok i will stick with my obd1 dizzy

also can i tell from the engine number to see what year model and what car the engine from?

my engine number B16A 53xxxxx

[tinkerbell]

http://home.exetel.com.au/tinkerbell/teg.headmarks.jpg

those numbers on the front side of the head (exhasut side) can tell you how old teh head castign is...

see it has 9 1 in the circle?

that means it was cast in 1991... it gives a verry rough idea of how old it it...

[FEL12X]

thank you x N times

[FEL12X]

anyone know if the side plastic cover for the timing belt is the same as B16 and B18A?

[tinkerbell]

i *doubt* it, because they have different sized heads, and the B16A deck height is 7mm shorter than B18A...

but not 100% certain ;)

[FEL12X]

i just got my engine strip yesterday,
the b16A plastic cover is broken and need replacing
i want to know if the B18A can use or not
and..
any difference in horse power for the early B16A and late model ones?
and what little things i need to do before i chuck it in?