|
Stock intake manifold vs. Extrude-Honed intake manifold |
|
|
|
|
Dynamometer Tests
|
|
Powerstack short-ram intake, race header, no catalytic converter, side-exit race exhaust, modified fuel tables with stock intake manifold (test #5220) vs Powerstack short-ram intake, race header, no catalytic converter, side-exit race exhaust, modified fuel tables with extrude-honed intake manifold (test #5232). Tested on 97 S Series DOHC with stock internals. Measured at the flywheel.
| 5220 includes Powerstack short-ram intake, race header, no catalytic converter, side-exit race exhaust, modified fuel tables | | | | | | | | | | | | X>14.7=lean | | 5232 adds extrude-honed intake manifold | | | | | | | | | | | | X<14.7=rich | | | | | | | | | | OIL TEMP | WATER TEMP | AIR FLOW | % LAMBDA | A/F Ratio | | | RPM | 5220 TQ | 5220 HP | 5232 TQ | TQ GAIN | 5232 HP | HP GAIN | DEG F | DEG F | SCFM | 1/AF RATIO | (X:1) | | | 4000 | 125.8 | 95.8 | 118.7 | -7.1 | 90.4 | -5.4 | 188.5 | 181.5 | 112.7 | 0.871 | 12.80406 | | | 4100 | 127.2 | 99.3 | 120.7 | -6.5 | 94.2 | -5.0 | 189.0 | 181.5 | 116.6 | 0.870 | 12.79084 | | | 4200 | 127.7 | 102.1 | 123.6 | -4.1 | 98.8 | -3.2 | 189.0 | 181.5 | 119.8 | 0.881 | 12.9518 | | | 4300 | 128.6 | 105.2 | 125.7 | -2.9 | 102.9 | -2.4 | 189.0 | 181.5 | 124.8 | 0.889 | 13.06301 | | | 4400 | 130.3 | 109.2 | 126.9 | -3.4 | 106.3 | -2.9 | 188.5 | 181.5 | 129.0 | 0.880 | 12.93875 | | | 4500 | 132.3 | 113.4 | 127.8 | -4.5 | 109.5 | -3.8 | 188.5 | 181.5 | 134.5 | 0.871 | 12.80156 | | | 4600 | 133.8 | 117.2 | 128.8 | -5.0 | 112.9 | -4.4 | 188.0 | 182.0 | 138.8 | 0.874 | 12.84434 | | | 4700 | 134.6 | 120.4 | 130.1 | -4.5 | 116.4 | -4.0 | 188.0 | 182.0 | 142.9 | 0.878 | 12.90017 | | | 4800 | 134.5 | 122.9 | 130.9 | -3.5 | 119.6 | -3.2 | 188.0 | 182.0 | 148.4 | 0.880 | 12.93765 | | | 4900 | 134.1 | 125.1 | 131.2 | -3.0 | 122.4 | -2.8 | 188.0 | 182.0 | 151.2 | 0.879 | 12.92376 | | | 5000 | 133.3 | 126.9 | 131.6 | -1.7 | 125.3 | -1.6 | 188.0 | 182.0 | 154.3 | 0.871 | 12.79765 | | | 5100 | 133.1 | 129.3 | 131.7 | -1.5 | 127.9 | -1.4 | 188.0 | 182.0 | 159.1 | 0.867 | 12.7429 | | | 5200 | 132.7 | 131.5 | 131.7 | -1.0 | 130.4 | -1.0 | 187.5 | 181.5 | 163.7 | 0.862 | 12.67511 | | | 5300 | 132.1 | 133.3 | 131.4 | -0.8 | 132.6 | -0.8 | 187.5 | 181.5 | 166.7 | 0.860 | 12.64587 | | | 5400 | 131.2 | 134.9 | 130.7 | -0.5 | 134.4 | -0.5 | 187.0 | 181.5 | 171.9 | 0.858 | 12.61757 | | | 5500 | 130.8 | 137.0 | 129.7 | -1.1 | 135.8 | -1.2 | 186.5 | 182.0 | 174.6 | 0.857 | 12.59917 | | | 5600 | 130.7 | 139.3 | 129.6 | -1.0 | 138.2 | -1.1 | 186.5 | 182.0 | 178.5 | 0.861 | 12.6618 | | | 5700 | 129.3 | 140.3 | 129.4 | 0.1 | 140.4 | 0.1 | 186.0 | 182.0 | 183.9 | 0.864 | 12.70369 | | | 5800 | 127.4 | 140.6 | 129.3 | 1.9 | 142.8 | 2.1 | 186.0 | 182.0 | 189.0 | 0.875 | 12.86502 | | | 5900 | 125.6 | 141.1 | 129.3 | 3.7 | 145.2 | 4.1 | 186.0 | 182.0 | 193.6 | 0.886 | 13.02115 | | | 6000 | 124.6 | 142.3 | 128.4 | 3.8 | 146.7 | 4.3 | 185.5 | 182.0 | 198.5 | 0.894 | 13.13835 | | | 6100 | 123.7 | 143.6 | 126.7 | 3.0 | 147.2 | 3.5 | 185.5 | 182.0 | 201.9 | 0.907 | 13.33584 | | | 6200 | 121.5 | 143.4 | 125.5 | 4.0 | 148.1 | 4.7 | 185.5 | 182.0 | 207.4 | 0.923 | 13.56219 | | | 6300 | 119.3 | 143.1 | 124.4 | 5.1 | 149.2 | 6.1 | 185.5 | 182.0 | 210.8 | 0.925 | 13.59848 | | | 6400 | 116.7 | 142.2 | 122.9 | 6.2 | 149.7 | 7.5 | 185.5 | 182.0 | 213.0 | 0.920 | 13.52945 | | | 6483 | 114.3 | 141.4 | 121.2 | 6.9 | 149.6 | 8.1 | 185.5 | 182.0 | 217.5 | 0.920 | 13.52122 |
|
; "Image")
