I've searched and searched everywhere. I was wondering if anyone has seen or can make a "How-To" manual for the B20B swap to the EG chasis. I'm going to attempt the swap myself in a couple months. I know the parts needed for the swap but was wondering if anyone has done the swap themselves I could ask questions to?
I'm just going to stick with the non-vtec set up for now. Plenty of power for what I'm used to, a puny D15B8...

Thanks guys.

Parts needed-
B20B
LS Tranny ( with replaced clutch and flywheel)
LS axels
B20B wire harness
B20B ECU
LS shift linkage
LS intake manifold
B-series header
LS motor mounts
Upgraded Radiator

Anything I'm missing?

 

it a straightforward swap. You will be amaze at how easily it come together. Your pretty much have everything there. Keep in mind that the b20b earlier year have a taller intake manifold it will not fit in your civic hood. When you order your engine or if you have it already, make sure it come with a p75 manifold (basically an ls manifold.

If you are planning to stay obd1 (recommended), read the following.

Your b20b is an obd2. You have and obd1 car. You will need an nonvtec distributor or repin the obd2 distributor that come with the motor using your old civic distributor plugs.

You CAN use your exisiting harness to save some money. It will work. Also, swap in your civic injector in for the newer b20 injector.

If using your vx/cx harness, convert the single wired o2 sensor into a 4 wire ones.

Don't forget to get an 94-95 p75/pr4 ECU manual. Reading from your signature, you have a cx hatchback,correct me if i m wrong. Your old ecu will work but it is best that your get the p75 to be able to fully use the potential of your new motor. The fuelmap of the cx ecu is lower than the ls. Low end, you will get more horsepower (very little though) using the cx/dx ecu but you will lose high end. Just get the p75/pr4 obd1 ecu. There is a significant different driving with those two ecu.

I think that's it. OH....GET A HELMS . it will show you everything you need to know. best 75 buck you can spent. Keep on reading for other mistaken on the hybrid section.

Good luck ...let me know if you are still confuse about everything. I have done this swap twice. Took me about 5 hours to complete everything, not including tranny rebuild.

Anthony





Modified by ProJectCvic at 9:26 PM 5/28/2004

 

hey i got linkage, intake manifold and mounts

 

one more thing i forgot....your b20 alternator won't work with the cx harness. Get one from the teggie.

 

the ls intermediate shaft fits? i cant remember which one it was that works...

 

94+ teg intermediate shaft is all the same. Even the b16 work also.

 

i still have my stock EG raditator

 

dude i swapped in a b20z in my hatch dont listen to anyone the b16 or b18 interediate shaft WILL NOT WORK!!!!! you need to get a 90-93 intermediate shaft ive done this swap 2 times now !!!!!!!!!!!!

 

Do you mean swap my civic injectors for the B20 injectors already in the fuel rail? Aren't the B20 injectors bigger?

Why would I want to switch to a 4 wire O2 sensor? I know the 4 wire sensors have the heater, but why switch?

The intermediate shaft is the "axel" right behind the block tha attatches to the axels, right?

Thnaks for all the info guys.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eghatch4sale &raquo;</TD></TR><TR><TD CLASS="quote">dude i swapped in a b20z in my hatch dont listen to anyone the b16 or b18 interediate shaft WILL NOT WORK!!!!! you need to get a 90-93 intermediate shaft ive done this swap 2 times now !!!!!!!!!!!!</TD></TR></TABLE>

i m confused now. I have a b20b in my civic with a b16 tranny. The bracket from my itr intermediate do not sit flush with the block. I though i have a deffected one. It didn't sit flush with my b18 block either.

I know my friend used a gsr intermediate (94+) with here b20/gsr tranny and many of honda-tech member have use the 94+ also.

The 90-93 intermediate have the same length as the 94+. The only difference is that it have both male end as opposed to the male/female end of that on the 94+ intermediate. If we were to use the 90-93, well will have to 90-93 driver side axle, which is shorter in length than that 94+ driver side axle. I have heard of axle issue with this combination.

Please explain your situation more. I would like to know


Modified by ProJectCvic at 12:34 PM 5/29/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lewis7789 &raquo;</TD></TR><TR><TD CLASS="quote">Do you mean swap my civic injectors for the B20 injectors already in the fuel rail? Aren't the B20 injectors bigger?

Why would I want to switch to a 4 wire O2 sensor? I know the 4 wire sensors have the heater, but why switch?

The intermediate shaft is the "axel" right behind the block tha attatches to the axels, right?

Thnaks for all the info guys.</TD></TR></TABLE>

Suprisingly they have the same cc. I forgot the exact number. The plug style for obd2 injector are different from the obd1 injector on your civic. If you want to use your old harness, switch injector. No problem at all. I use my dx injector in my b20b motor.

The intermediate as you mention is correct. Sometime people refer them to half-shaft.

 

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

Suprisingly they have the same cc. I forgot the exact number. The plug style for obd2 injector are different from the obd1 injector on your civic. If you want to use your old harness, switch injector. No problem at all. I use my dx injector in my b20b motor.

The intermediate as you mention is correct. Sometime people refer them to half-shaft. </TD></TR></TABLE>

i forgot to mention about the o2 sensor question

Like i say, if you want to use your old harness, switch to the 4 wire o2 sensor. The obd1 pr4/p75 ecu will look for a 4 wire o2 sensor. You will throw a code. Your harness have a single wire o2 sensor. That is why you should switch. Check it out on your motor.

it is not very hard to do as i have heard.

 

Right on, thanks again.

Now the LS B18B came in OBD1 and OBD2 right? I'll be usuing the OBD1 parts, like you said to keep it all the same. What year is the OBD1 B18B Integra's from?

My stock EG radiator will keep the B20B cool enough? I figured I'd have to upgrade at least to a Del Sol dual core?

I knew I had a one wire O2 sensor, but I just replaced it about a month ago with another one wire sensor. Oh well. That makes sense about the ecu looking for the 4 wire, duh...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lewis7789 &raquo;</TD></TR><TR><TD CLASS="quote">Right on, thanks again.

Now the LS B18B came in OBD1 and OBD2 right? I'll be usuing the OBD1 parts, like you said to keep it all the same. What year is the OBD1 B18B Integra's from?

My stock EG radiator will keep the B20B cool enough? I figured I'd have to upgrade at least to a Del Sol dual core?

I knew I had a one wire O2 sensor, but I just replaced it about a month ago with another one wire sensor. Oh well. That makes sense about the ecu looking for the 4 wire, duh...</TD></TR></TABLE>

94-95 is obd1, 96+ is obd2.

Personally, my small civic radiator is not working for me. I will be upgrading to a dual core one from the del sol or go will the teggie and get rid of ac. I can't decide now.

I have heard many honda-tech member use their stock radiator. Mine is not enough. mine is too old

 

the purpose of using a double core del sol vtec radiator is simple. B series rubber hoses are bigger then D series. It will fit better (hoses) and won't leak (even if its a tiny bit) if you use a del sol vtec double core rad. It's gonna stay cooler as well, and it will fit bolt on.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by STN_Pat &raquo;</TD></TR><TR><TD CLASS="quote">the purpose of using a double core del sol vtec radiator is simple. B series rubber hoses are bigger then D series. It will fit better (hoses) and won't leak (even if its a tiny bit) if you use a del sol vtec double core rad. It's gonna stay cooler as well, and it will fit bolt on. </TD></TR></TABLE>

plus it bigger too