Cuninlyngus

Hey, I'm currently researching engine swapping and would like to put a b18c5 type r engine into a 91 civic sedan. I've never done this before. I'm wondering if anyone could tell me whats required to do one of these procedures..I know id need a compatible transmission, what else is needed? also should I go with this engine or is the b18c1 a cheaper easier route to start with?

.Grimace

It's sadly not possible. B series swaps have been around since the early 2000's in EF cars there just isn't any info about it.

HondaPartsHero

What trim is your car, EX, LX, etc?

4drEF

Lol!

Heaven forbid that anyone try searching in Google.

.Grimace

What's a "Google"?

Cuninlyngus

I know that its possible I've seen plenty around the internet...it would be most likely be dx I don't have it yet

Cuninlyngus

I just wanted to know what other parts have to be changed besides the engine and tranny for it too work

Cuninlyngus

i think i figured it out if i order one from hmotors they should include everything i need. and from reading some threads they seem legit

HondaPartsHero

You'll need a bit more. Your car is a DPFI, you'll need to swap over to MPFI and convert your alternator,injector and distributor plugs to OBD2. You'll also need to wire up VTEC and knock sensor along with adapting the fan switch to the thermostat housing. You'll also need to add wiring for the 4 wire 02 sensor.
EF Swap Guide.
CIVIC4G.COM - Honda Civic 4th Generation (1988-1991) Forum ? View topic - Engine swap guide, FAQs and Index thread

Cuninlyngus

thanks man!^

Cuninlyngus

In regards to switching to obd2 I would need a conversion harness right? Also I heard going from obd0 (which the car has) to obd2 can be tricky? Is it possible too convert to obd1 and get a chipped ecu? if so what ecu would I get? Soooo many questions hahaha

ferio-ichi3

Youll need a b series ef post mount. I have one if you need it. Just have to find it lol.

HondaPartsHero

You can convert to OBD1 at the ECU very easily with an adapter harness, however the connectors at certain sensors need to be swapped to OBD2 in order to plug an play, this is after your DPFI harness is converted to MPFI. There are some harness makers out there that will do this for you and add whatever connectors you need to the harness but its pricey. If you are super comfortable with wiring, soldering, etc you can do it yourself. In the FAQ there are a lot of write ups for it.

Cuninlyngus

thanks you're all a great help! I'll let you know if I end up needing that post mount ferio don't try finding it yet haha

Cuninlyngus

I'm browsing Rywire right now for this swap would I need the following: alternator adaptor, some sort of b series harness, a distributor adaptor, and ecu jumper, and injector adaptors?
I'm basically looking for some assistance in what to buy for the wiring part of the swap.

Cuninlyngus

would i also need a 4 wire o2 sensor?

Cuninlyngus

http://www.hmotorsonline.com/shop/sc...age&item=30010

if i order that which includes a whole bunch of stuff. what else would i need to get?

HondaPartsHero

Instead of all the adapters I'd contact them or monotech and see how much a DPFI to OBD2 engine harness would run.

Cuninlyngus

that way it would cut down on all the wiring and be a little cleaner?

HondaPartsHero

Yeah definitely

Cuninlyngus

okay thanks for help man appreciate it ill be contacting Rywire once I have the money