92 Civic CX with D15b2 swap?
Hello,
My buddy just purchased a manual 92 CX to commute to work because of the good gas mileage. I'm looking at the motor and it's a 16v d15b2.
That's the motor out an CRX/EF civic, isn't it?
Is this a step back?
What kind of MPG can he expect?
Is there different ecu running for the OBD0.
Motor/exhaust looks stock? Will he have problems with CA smog?
Any input would be appreciated.
My buddy just purchased a manual 92 CX to commute to work because of the good gas mileage. I'm looking at the motor and it's a 16v d15b2.
That's the motor out an CRX/EF civic, isn't it?
Is this a step back?
What kind of MPG can he expect?
Is there different ecu running for the OBD0.
Motor/exhaust looks stock? Will he have problems with CA smog?
Any input would be appreciated.
Found in:
1988–1991 Honda Civic GL/DX/LX
1988–1991 Honda Civic Wagon Wagovan/DX
1988–1991 Honda CRX DX
1992–1995 Honda Civic LSi Hatch/Saloon (European Market)
1992–1995 Honda Civic DXi Hatch/Saloon (European Market)
1990–1995 Honda Concerto (European Market)
Displacement: 1,493 cc (91.1 cu in)
Bore and Stroke: 75 × 84.5 mm (3.0 × 3.33 in)
Rod Length: 134 mm
Compression: 9.2:1
Power: 92 hp (69 kW) at 6,000 rpm (US)
90 PS (66 kW) at 6,000 rpm (Europe)[9]
Torque: 88 lb·ft (12.2 kg/m, 119 Nm) at 4,700 rpm
Valvetrain: SOHC (four valves per cylinder)
Cam Gear: 38 tooth
Piston Code: PM3
Fuel Control: OBD-O DPFI and OBD-1 MPFI
Redline: 6,500 rpm, 7,200 rpm rev limiter
Head Code: PM5
ECU Code: PM5/P04
1988–1991 Honda Civic GL/DX/LX
1988–1991 Honda Civic Wagon Wagovan/DX
1988–1991 Honda CRX DX
1992–1995 Honda Civic LSi Hatch/Saloon (European Market)
1992–1995 Honda Civic DXi Hatch/Saloon (European Market)
1990–1995 Honda Concerto (European Market)
Displacement: 1,493 cc (91.1 cu in)
Bore and Stroke: 75 × 84.5 mm (3.0 × 3.33 in)
Rod Length: 134 mm
Compression: 9.2:1
Power: 92 hp (69 kW) at 6,000 rpm (US)
90 PS (66 kW) at 6,000 rpm (Europe)[9]
Torque: 88 lb·ft (12.2 kg/m, 119 Nm) at 4,700 rpm
Valvetrain: SOHC (four valves per cylinder)
Cam Gear: 38 tooth
Piston Code: PM3
Fuel Control: OBD-O DPFI and OBD-1 MPFI
Redline: 6,500 rpm, 7,200 rpm rev limiter
Head Code: PM5
ECU Code: PM5/P04
I'm genuinely curious RonJ, how do you know it's an OBD0 motor/ECU? I don't see anywhere that the OP mentioned exactly what ECU he's running, and if the motor was swapped, I think it's a perfectly reasonable assumption that the PO put in an EDM OBD1 motor, since EDM is evidently the new hotness now.
I'm genuinely curious RonJ, how do you know it's an OBD0 motor/ECU? I don't see anywhere that the OP mentioned exactly what ECU he's running, and if the motor was swapped, I think it's a perfectly reasonable assumption that the PO put in an EDM OBD1 motor, since EDM is evidently the new hotness now.
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OP, what is the date code stamped on the head?
That's the head code from a D16A6 off a '90 SI, not the date code. The date code is two circles with two numbers in each, most likely near the head code. On the plus side, you've indirectly answered my question.
That also tells us that this motor is a mish-mosh of parts. Awesome.
Out of curiosity, what ECU is the car running on, and has the head been MPFI converted?
This combination of factors is probably going to make smogging the car a royal PITA.
That also tells us that this motor is a mish-mosh of parts. Awesome.
Out of curiosity, what ECU is the car running on, and has the head been MPFI converted?
This combination of factors is probably going to make smogging the car a royal PITA.
Look here:
http://www.ramscyl.com/honda.htm
This site states that the PM3-1 head comes from a 93-95 D15b2 engine. This presumably is the Euro D15b2 you mentioned.
http://www.ramscyl.com/honda.htm
This site states that the PM3-1 head comes from a 93-95 D15b2 engine. This presumably is the Euro D15b2 you mentioned.
Look here:
http://www.ramscyl.com/honda.htm
This site states that the PM3-1 head comes from a 93-95 D15b2 engine. This presumably is the Euro D15b2 you mentioned.
http://www.ramscyl.com/honda.htm
This site states that the PM3-1 head comes from a 93-95 D15b2 engine. This presumably is the Euro D15b2 you mentioned.

So in that case, OP, I go back to my previous question. Find the date stamp on the head and post it. That'll help us tell you if it'll be difficult, or impossible to get smogged.
Ok here's all the info:
Head is a pm3-1 stamped as 1990
ECU seems to be the stock p05
Block is a d15b2
How can I tell if the head has been converted to MPFI?
Thanks for all your help so far guys.
Head is a pm3-1 stamped as 1990
ECU seems to be the stock p05
Block is a d15b2
How can I tell if the head has been converted to MPFI?
Thanks for all your help so far guys.
Is the CEL on? Does the CEL work? Basically, assuming everything is mechanically sound, your friend should be able to get this passed.
Turns out the car smoged less then 90 days ago anyway...lol didn't need a smog to register. I don't think the smog ref would know it's an older motor as long as it has right the right equipment.
Last edited by 91crxturbo; Jul 8, 2012 at 10:24 PM. Reason: sd
If he looked at the date stamp (like what HPH posted) he would easily know it's an older motor, but we're only talking what, a year older? Any ref would have to have a HUGE stick up their *** to fail as long as it's the same generation, and falls within spec.
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