I have a blown B18B1. I found a B18A for cheap.
I have seen so many variations of engine numbers, on not just this car but all hondas.
what do they mean? I do understand that the 18, in this case means the litre displacement.

and furthermore, would this B18A drop right in, in place of the B18B1, with out any changes to anything?

I have been a technician at a Jeep dealer for six years and doing Toyota work for the past 10. Only done general repair and maintanence to hondas.

Now im getting into hondas, Or they're getting into me. I have a few of them.

I dont know much about the engine numbers:
I have a D16Y7, D15B7, B18B1, H23A1. I also bought a delsol with a B18 (gsr?) head on a CRV block. does that sound right? its ugly as sin, but it hauls ***.

Would you webwrenchers please explain to me what the meaning is to all the letters? Thanks!!

 

I did read the FAQ (just now, flame on)
It seems the 'A1' and 'B1' means the difference of generations, And OBDI and OBDII. I would imagine you couldnt drop in the OBDI engine into the OBDII car without mod to the ECU, right? Or any mods, for that matter.
So, is it possible to keep my B18B1 head, and bolt it to the B18A1? and avoid changing back to old gen stuff?

 

woo this will be a long one. But since you seem like a nice guy I'll give a little input even though I should be studying.

The search function is also really helpful as well as the FAQ that is stickied at the top of this forum.

{letter}{number}{letter}

the first letter usually signifies the overall design and series of the engine.

D series engine are all SOHC, and were found in civics.
B series engines are all DOHC, and were found in the civic Si, integras, crv, and something else.
H series are DOHC and were found in the prelude (I dont know much about the H series engines)

the number signifies the displacement of the engine roughly.

16 means 1.6 liters, 18 means 1.8 liters and so on.
So D16 means a D series 1.6 liter engine.

the B18A and B18B engines are both the same engine with basically, although i believe the B18A is OBDI and B18B is OBDII.

the B18C is the VTEC engine which was found in the GSR and Type R. B18C1 is the USDM GSR engine, and B18C5 is the USDM Type R engine. That last number is just to differentiate the different B18C engines (there are differences internally).

that delsol probably has a B18C1 head on the B20 block. That is called an LS/VTEC engine, it was never made by honda, and is done by people who dont have complete VTEC engines but want VTEC. It is where you put a VTEC head on a non Vtec Block, there are some changes you need to do internally for it to work (oil pump etc).

This was by no means at all an end all introduction, I highly suggest you search the forum for more answers, I know other people have explained it better and MUCH more in depth. I hope I could help.

 

For your specific question:
B18A - 90-91 Integra ALL - OBD0
B18A1 - 92-93 Integra RS, LS, GS - OBD1
B18B - 94-01 Integra RS, LS, GS - OBD2 (edited last year based on HondaDC4Integra's information. Thanks.)

To avoid any potential problems, you woulds want to match the ECU from the same OBD to swap these engines. It is not required though, as I have a B18B in my 90 Integra which is OBD0. The trick in my case is that I am using an OBD0 distributer for the B18A.


Modified by mc-integra111 at 4:04 PM 3/20/2008

 

hey....not all D series are/were single cam.....you forgot the D16 in the first gen integra. it was twin cam.....lol.... o yeah and the b18b ran in the tegs till 01

 

so what does the last number mean? and what gen would a 95 civic ex vtec be? im guessing a d16?? idk really?

 

Correction the 94-95 B18B found in the RS, LS, GS is OBD1 not OBD2 .

Back to the OP's question. What vehicle do you have? There is a difference, although slight, in the B18A and B18B between OBD's. Namely the B18A has the fan switch on the back of the block where the B18B has it on the thermostat housing. Also OBD1 B18B's and B18A's don't have the CKF sensor on the block that the OBD2 B18B's have. Also a major item would be that the OBD0/1 B18A/B have the oil catch can on the back of the block where as the OBD2 B18B's don't.

 

90-93 integra: B18A1 (92-93 were equipped with OBD-1 diagnostics)

94-01 integra: B18B1 (94-95 were OBD-1, 96-99 were OBD-2A, 00-01 were OBD-2B)

 

the b18b1 head flows alittle better, cams are alittle better you can run a b18b1 head on a b18a1 block just bolt and go.

There are d16 that were dohc... gen1 tegs, and D16ZC motors were dohc

you can run an OBD0 to OBD1 jumper with the 94-95 b18b1 ecu and its pretty cheap... you will see alittle jump in power