95civicex95

I recently bought a b16a long block from a local guy and when i bought it he said it was a obd1 motor but they took it out of a crx. I have a 95 civic ex and am planning on putting it in that and was wondering how do you tell if its obd 0 1 or 2. The block says B16A on it. Im asking because i dont want to spend all this time putting it in my car and it not work. I bought it because i couldnt pass up the price. This is prolly a stupid question but i dont know the answer so i figured i would ask. Thanks.

crx2fast

How to tell the difference between an SiR and an A2/A3/SiR II

* SiR is PGM-F1, clearly labeled on the intake manifold, andA2/A3/SiR II are MPFI
* SiR valve covers have "DOHC" written in a larger font size than "VTEC"
* SiR uses a cable tranny- 5th gens are hydraulic
* SiR has a lower compression ratio, 10.2:1 and makes 160ps
* SiR has cast aluminum oil spray bars while the A2/A3/SiR II are made of extruded aluminum.
* A2/A3/SiR II have a higher compression ratio at 10.4:1 and make 160hp (A2/A3) or 170ps (SiR II)
* A2/A3/SiR II motors have a better cam profile
* A2/A3/SiR II have better oiling functions, keeping things better lubricated
* A2/A3/SiR II have a single- 4-wire O2 sensor instead of 2-single wire O2 sensors
* A2/A3/SiR II MAP sensor is an integral part of the throttle body, not an external one with a tube.
* A2/A3/SiR II harnesses are grey. SiR has cream colored ones.
* A2/A3/SiR II valve covers have "VTEC" written in a larger font size than "DOHC"

Additional Information

88-91 B16A's are known as the SIR 1. It uses OBD0 Ecu's, and cable tranny's. The engine serial number is usually 1xxxxxx.
92+ B16A's are known as the SIR 2. It uses OBD1 or OBD2(2b), and hydraulic trannys. The engine serial number is usually 5xxxxxx
The #'s at the end of the block code tell where the engine originated from. The Americas, Europe, Austraillia, etc.....
ALL Japanese engines, generally do NOT have a number after them. (** see below)
SO, if you have a B16A1,2,3,4, or 5. It is usually NOT a true JDM engine. Don't mistake a B16A1 as being a cable unit, because it could be a hydraulic. There are other ways to tell what year it is exactly.

**NOTE: There is ONE exception to this rule. In 90-91, the Civic/CRX SiR came with a B16A1, but they are SUPER rare, and came 160HP with 10.4:1 compression. Their counterpart of the same year was a 158HP, 10.2:1. They are very difficult to tell apart.

http://www.mainstreamtopics.com/foru...php/t2149.html

B16aJunkY

as u see here DOHC is bigger then vtec. but then couldn;t they just get the valve cover and change it so it looks like that? and say its a real jdm?

shifter

it's a obd0 forsure =)

95civicex95

well on the intake manifold it says nothing. the valve cover has big VTEC and little DOHC. the bock says b16a no number after it. this is a long block so weather its obd 0 1 or 2 can i put it in my 95 civic if i put a hydro tranny on it and im putting turbo on it so it will have 450s for injectors and someone told me just to put a b16 obd 1 dist. on it and it will be fine.