Just used the rather usfull performance calculator Matt posted for a rough idea of what the weight difference would do to the 0-60 time etc
Vehicle: Astra Coupe linea rossa
Weight: 1223Kg
Power output: 144 bhp standard
Power at Flywheel (BHP) : 144
Weight without Driver (KG) : 1223
Power to Weight Ratio (BHP Per Ton) : 119.63
0 - 60 (Secs) : 8.75
0 - 100 (Secs) : 25.83
60 - 100 (Secs) : 17.08
Quarter Mile (Secs) : 17.21
Terminal Speed (MPH) : 81.62
Drag Strip Quarter Mile (Secs) : 17.01
Drag Strip Terminal Speed (MPH) : 82.99
Assuming your current manifold weighs absolutly nothing and so with an extra 7kg of weight
Power at Flywheel (BHP) : 144
Weight without Driver (KG) : 1230
Power to Weight Ratio (BHP Per Ton) : 118.95
0 - 60 (Secs) : 8.80
0 - 100 (Secs) : 26.02
60 - 100 (Secs) : 17.22
Quarter Mile (Secs) : 17.25
Terminal Speed (MPH) : 81.43
Drag Strip Quarter Mile (Secs) : 17.05
Drag Strip Terminal Speed (MPH) : 82.79
0-60 difference = 0.05 seconds :lol: not much to worry about there then! :lol:
Now for the power gain...lets assume say 6bhp
Power at Flywheel (BHP) : 150
Weight without Driver (KG) : 1230
Power to Weight Ratio (BHP Per Ton) : 123.91
0 - 60 (Secs) : 8.48
0 - 100 (Secs) : 24.56
60 - 100 (Secs) : 16.08
Quarter Mile (Secs) : 16.93
Terminal Speed (MPH) : 83.02
Drag Strip Quarter Mile (Secs) : 16.73
Drag Strip Terminal Speed (MPH) : 84.42
0-60 difference = 0.32 seconds quicker.
0-100 difference = 1.46 seconds!
Thats not to be sniffed at!! a few bhp here and there and you can substantially bring your 0-60 down. 8)
So with 2.4l intake, 270 piper cams, flowmaster intake, dbilas exhaust manifold, sports cat and good exhaust system....185bhp?? in which case
Power at Flywheel (BHP) : 185
Weight without Driver (KG) : 1227
Power to Weight Ratio (BHP Per Ton) : 153.19
0 - 60 (Secs) : 7.03
0 - 100 (Secs) : 18.54
60 - 100 (Secs) : 11.51
Quarter Mile (Secs) : 15.45
Terminal Speed (MPH) : 91.27
Drag Strip Quarter Mile (Secs) : 15.25
Drag Strip Terminal Speed (MPH) : 92.84
7 seconds!! cheers.. thats more like it!!