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Old 29 Jul 2013, 11:46 am
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Default What are the difference in specs for a B18C5 and B18A?

Currently have a D16Y8 block in my 97 civic ex, and am planning an engine swap.
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Old 29 Jul 2013, 12:01 pm
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The B18C5 and B18A? Those are world's apart eventhough they are related. First off, the B18A is an older non-VTEC engine. Not sure if that's even legal since it's an older engine. The B18a is OBD1 whereas your car is set up for OBD2. It was used on the 1990-93 Integra RS, LS and GS. the B18C5 is a much later model and was used in the Integra Type R. The differences? 130 horsepower in the B18a vs. 195 hp in the B18C5. The C5 has a shorter stroke and a much higher redline, so it has a higher peak before reaching it's power band, wheras the B18A has slightly larger pistons and is long stroke meaning it has more torque, so it is more responsive at the lower end but it runs out of breath faster. It's a bit more turbo friendly because of the lower compression too. If you weren't meaning the B18 and were consdiering the B18B (used in later model Teg RS,LS and GS), those put out 142 hp stock and the same rules apply as the B18A. There's also the B18C1 used in the Integra GSR which puts out 170 hp and delivers the good similar to the C5 in the GSR. That's the one I'd consider.
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