This page stolen from http://www.g-speed.com/pbh/b16a/
| Honda first stunned the world with the introduction of B16A in 1989. A
mass-produced normally
aspirated engine that hit the magic 100 hp/liter - 160 hp out of 1.6 liter of displacement.
B16A has been the benchmark of 1.6 liter engines since then. As of today, you can pretty
much classify B16A into four distinctive era. I am going to call them B16A G1, B16A G2,
B16A G3, and B16B 98 SpecR. B16A G1 - The original motor introduced in JDM 1989
Civic/CRX (EF body) and JDM 1989 Integra (DA body) B16A's close DOHC VTEC sibling |
|
| Engine | JDM B16A G1 (USA B16A3) | JDM B16A G2 | JDM B16A G3 | JDM B16B 98 spec.R | USA B17A | USA B18C | USA B18C spec.R | JDM B18C 96 spec.R |
| Type | Water-cooled 4 stroke | Same | Same | Same | Same | Same | Same | Same |
| Cylinder Arrangement | Inline 4 cylinder, transverse | Same | Same | Same | Same | Same | Same | Same |
| Block Height ** | 263 mm (10.354") | Same | Same | Same | Same?! | 270 mm (10.630") | Same | Same |
| Bore x Stroke | 81.0 x 77.4 mm (3.19 x 3.05 in) | Same | Same | Same | 81.0 x 81.4 mm (3.19 x 3.20 in) | 81.0 x 87.2 mm (3.19 x 3.43 in) | Same | Same |
| Displacement | 1595 cc (97.3 cid) | Same | Same | Same | 1678 cc (102.4 cid) | 1797 cc (109.6 cid) | Same | Same |
| Compression Ratio | 10.2 | 10.4 | 10.4 | 10.8 | 9.7 | 10.0 | 10.6 | 11.1 |
| Valve Train | Belt driven, DOHC w/VTEC, 16 valves | Same | Same | Same | Same | Same | Same | Same |
| Maxinum Output | 160 ps @ 7600 rpm | 170 ps @ 7800 rpm | 170 ps @ 7800 rpm | 185 ps @ 8200 rpm | 160 hp @ 7600 rpm | 170 hp @ 7600 rpm | 195 hp @ 8000 rpm | 200 ps @ 8000 rpm |
| Maxinum Torque | 111 lbs-ft @ 7000 rpm (15.5 kgm @ 7000) |
16.0 kgm @ 7300 rpm | 16.0 @ 7300 rpm | 16.3 kgm @ 7500 rpm | 117 lbs-ft @ 7000 rpm | 128 lbs-ft @ 6200 rpm | 130 lbs-ft @ 7500 rpm | 18.5 kgm @ 7500 rpm |
| Specific Output (output/liter) | 100 ps/liter | 106.3 ps/liter | 106.3 ps/liter | 115.6 ps/liter | 94.1 hp/liter | 94.4 hp/liter | 108.3 hp/liter | 111.1 ps/liter |
| Engine | JDM B16A G1 (USA B16A3) | JDM B16A G2 | JDM B16A G3 | JDM B16B 98 spec.R | USA B17A | USA B18C | USA B18C spec.R | JDM B18C 96 spec.R |
| Intake/Exhaust Valve Size | 33.0 mm/28 mm | Same | Same | Same | Same | Same | Same | Same |
| Intake opening (BTDC) | 10 | 15 | 15 | 18 | 10 | 10 | 15 | 15 |
| Intake closing (ABDC) | 40 | 45 | 45 | 45 | 40 | 40 | 45 | 45 |
| Intake duration | 230 | 240 | 240 | 243 | 230 | 230 | 240 | 240 |
| Exhaust opening (BBDC) | 40 | 40 | 40 | 45 | 40 | 40 | 45 | 45 |
| Exhaust closing (ATDC) | 7 | 7 | 7 | 10 | 7 | 7 | 10 | 10 |
| Exhaust duration | 227 | 227 | 227 | 235 | 227 | 227 | 235 | 235 |
| Overlap | 17 | 22 | 22 | 28 | 17 | 17 | 25 | 25 |
| Intake valve lift (mm) | 10.6 (.417") | 10.7 (.421") | 10.7 (.421") | 11.5 (.453") | 10.6 (.417") | 10.6 (.417") | 11.5 (.453") | 11.5 (.453") |
| Exhaust valve lift (mm) | 9.4 (.370") | 9.4 (.370") | 9.4 (.370") | 10.5 (.413") | 9.4 (.370") | 9.4 (.370") | 10.5 (.413") | 10.5 (.413") |
| Intake/Exhaust Valve Springs | Dual/Single | Dual/Single | Dual/Single | Dual/Dual | Dual/Single | Dual/Single | Dual/Dual | Dual/Dual |
* All cam timing figures are the high rpm lobe. All figures from Honda, which are based
on 1 mm (.0394") lift at valve
** Block height measured with steel ruler from deck to bottom of oil pan rail. - Louis DeVirgilio
*** It seems that the above engines do not all have the same rocker arm ratio! That means
the same cam will have different lift at valve depending on which rocker arm is used.
People always ask if parts are interchangeable between the above motors. The answer is yes on most parts (valves, valve springs, cams, rocker arm, crank, head). There are only few exceptions like all intake manifolds are interchangeable except B18C. The tranny's for the above motors will also bolt up to each other. But newer ones are hydralically operated while the older ones are cable.
