[humfrz]

Originally Posted by Archetype

That is true, but I dont have a N/A BRZ/FR-S. I have a turbo'd BRZ soooo Im gonna shoot for higher than your 150 good sir.

Please keep us informed of your progress.

Will the gearing allow your BRZ to go 200 mph?

You may be interested in this (that I stole off the Internet)

Top Speed

The top speed of a vehicle has almost nothing to do with the mass of the vehicle (apart from bearing friction and tyre losseswhich, in terms of power consumed at top speed, are minimal). The two major factors are power and aerodynamic drag. The equation to get a pretty good approximation of top speed of a vehicle is that relating power to drag:-



where P is the power in Watts, r is airdensity (1.3), CD is the coefficient of drag, A is the frontal areain square metres, and v is the velocity in m/s. To see how well this works,lets take, for example, a modern Falcon XR6 and an old 4.1 Cortina.

The XR6 produces about 110kW at the wheels,has a CD of 0.31, and a frontal area of about 2.4 square metres. In the case ofthe Cortina, the numbers are 60kW, 0.48 and 2.2.

To get top speed:



For the XR6, this equates to 66.6m/s or239km/h. The XR6 has been tested at over 230km/h, so this seems prettyreasonable. For the Cortina, the speed is 48.4m/s, or 174km/h, which is prettylineball with the tests for the car. An interesting exercise would be to testthe numbers for your own favorite car, remembering to use power at the driven wheels,not at the flywheel.

And again, note here that it is peak power,not peak torque, which is the important engine performance variable.

Questions ..... ??

What do you figure your car's wheel HP (or in kW's) is?

humfrz