Beginner's guide to telling apart B16A motors
13-Dec-2002, 05:50 PM
#1
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Join Date: Dec 2002
Location: ottawa
Posts: 55
Beginner's guide to telling apart B16A motors
Which is Which
Beginner's guide to telling apart B16A motors
With all the misinformation that has been passed around by word-of-mouth and the internet, quite a few individuals have made the mistake of buying the wrong B16A engine (often not realizing it).
What this page tries to achieve is to clarify some of the doubts when it comes to which B16A is which and hopefully stop retailers passing off first generation B16A's as later generation (92 and up) B16A's.
Comparing only the JDM motors, the first generation B16A has a lower compression ratio (10.2:1 versus 10.4:1) and makes 160ps instead of 170ps of output power. In addition there was a revision of the cam profile and oiling improvements in the second (and later) generation B16A engines.
What to look for
Japanese market (JDM) B16A motors are labelled with a "B16A" stamp. There is NO suffix (e,g, B16A2 or B16A3) like the US, Asian or European counterparts. Hence it isnt easy to tell just by looking at the block stamp.
Absence of a PGM-F1 label on the intake manifold.
1-The Intake manifold has no bulge on the back side (side facing the firewall).
2-Connector plugs on the engine harnesses are grey instead of milky white.
3-Absence of vacuum dashpots on the intake manifold and throttle body.
4-MAP sensor is an integral part of the throttle body, not an external one with a tube.
Externally you will also see:
1-Single 4-wire O2 sensor instead of 2 single wire O2 sensors
2-Both serial numbers start with '5' bit
2nd generation B16A
Grey connectors
One 4-wire O2 sensor
Hydraulc transmission
First generation B16A
Milky white connectors
Twin single wire O2 sensors
Cable transmission
Things to ignore:
Valve covers. It's too easy to change valve covers.
You will notice the same features that tell it apart from a first generation B16A.
The differences do not end there. If you open the oil cap, you should be able to see the oil spray bars. The first generation has cast aluminium oil spray bars while the later generation ones are made of extruded aluminium.
Price issues
The going price of a first generation B16A varies at around $400-$800.USD Sometimes this price includes a cable clutch transmission(Y1/S1/J1). The later generation B16A price is obviously higher, raging from $1500 to $3000USD. For $3000USD, expect a hydraulic clutch transmission (YS21) to be included.
It has come to our attention that some retailers have tried to pass off the first generation B16A as a late model B16A and hence selling them for much more than they are worth. Please be very aware when buying these motors.
Beginner's guide to telling apart B16A motors
With all the misinformation that has been passed around by word-of-mouth and the internet, quite a few individuals have made the mistake of buying the wrong B16A engine (often not realizing it).
What this page tries to achieve is to clarify some of the doubts when it comes to which B16A is which and hopefully stop retailers passing off first generation B16A's as later generation (92 and up) B16A's.
Comparing only the JDM motors, the first generation B16A has a lower compression ratio (10.2:1 versus 10.4:1) and makes 160ps instead of 170ps of output power. In addition there was a revision of the cam profile and oiling improvements in the second (and later) generation B16A engines.
What to look for
Japanese market (JDM) B16A motors are labelled with a "B16A" stamp. There is NO suffix (e,g, B16A2 or B16A3) like the US, Asian or European counterparts. Hence it isnt easy to tell just by looking at the block stamp.
Absence of a PGM-F1 label on the intake manifold.
1-The Intake manifold has no bulge on the back side (side facing the firewall).
2-Connector plugs on the engine harnesses are grey instead of milky white.
3-Absence of vacuum dashpots on the intake manifold and throttle body.
4-MAP sensor is an integral part of the throttle body, not an external one with a tube.
Externally you will also see:
1-Single 4-wire O2 sensor instead of 2 single wire O2 sensors
2-Both serial numbers start with '5' bit
2nd generation B16A
Grey connectors
One 4-wire O2 sensor
Hydraulc transmission
First generation B16A
Milky white connectors
Twin single wire O2 sensors
Cable transmission
Things to ignore:
Valve covers. It's too easy to change valve covers.
You will notice the same features that tell it apart from a first generation B16A.
The differences do not end there. If you open the oil cap, you should be able to see the oil spray bars. The first generation has cast aluminium oil spray bars while the later generation ones are made of extruded aluminium.
Price issues
The going price of a first generation B16A varies at around $400-$800.USD Sometimes this price includes a cable clutch transmission(Y1/S1/J1). The later generation B16A price is obviously higher, raging from $1500 to $3000USD. For $3000USD, expect a hydraulic clutch transmission (YS21) to be included.
It has come to our attention that some retailers have tried to pass off the first generation B16A as a late model B16A and hence selling them for much more than they are worth. Please be very aware when buying these motors.
14-Dec-2002, 01:06 AM
#4
Guest
Posts: n/a
http://tech.hybridgarage.com/tech/b16/index.html
Also technical posts should be added to the appropriate technical forum.
Also technical posts should be added to the appropriate technical forum.
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