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Originally Posted by ian_w
Car engine: 190 * 3.0 = 570 Nm, 4000 / 3.0 = 1333 wheel rpm
Bike engine: 110 * 6.0 = 660 Nm, 8000 / 6.0 = 1333 wheel rpm
So from these calcs, you can see that the bike engine gives a significantly higher peak wheel torque ( 660 vs 570 Nm ) at the same wheel speed, i.e the bike engine will accelerate the car faster.
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i can see you numbers, but in practise its not that simple, for a start transmission losses go up with rpm so a lot of the extra torque the bike engine is supposed to deliver to the wheels wont actually arrive at them.
having raced against bike engined kit cars that weigh half the weight of my car, i would only say they accelerate faster due to the fact they have much less weight to lug around, not to mention an extra cog in the sequential gearbox, they tend to get the jump on me off the line and out the slower corners, but DONT actually accelerate faster because i then reel them in again.
sorry but were not comparing like for like here, otherwise everyone would be building tiny engines that reved to hell and back and just geared them down,
just look at F1 they are slowing the cars down by making them have SMALLER engines which WILL rev higher, or has bernie got it wrong and they should be getting bigger engines, i think not.