Can one of you experts explain how the RS4 will deliver it's power?
05-25-2005, 05:20 AM
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Can one of you experts explain how the RS4 will deliver it's power?
I know we are expecting 414 HP and 317 TQ, but how exactly will the engine differ from the current S4 engine? Thanks
05-25-2005, 05:38 AM
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Correct. Small(er) displacement, so it needs lotsa revs.
Upgrade the parts, shorten the throw, and rev the **** out of it. That, with FSI, should give some decent power. But the real "genious" behind 417HP is 7900 rpms.
05-25-2005, 05:40 AM
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By running at 8000+ rpm.
Power is essentially torque/time:
HP = Torque x rpm / 5252
So if the engine can make the same torque at 8000 rpm that another does at 6000, it will generate 25% more power. This is how F1 engines make such incredible HP per liter, since they turn at 18500 rpm. The RS4 engine will have moving parts that can handle higher revs (8250) and intake and exhaust tuned to allow the faster flow of air. This is also why it generates more HP, but pretty much the same torque. Personally, I don't think the engine is going to be that much more drivable than ours, but it will be sweet on the track.
Useless trivia: all enignes generate the same HP and torque at 5252 rpm.
HP = Torque x rpm / 5252
So if the engine can make the same torque at 8000 rpm that another does at 6000, it will generate 25% more power. This is how F1 engines make such incredible HP per liter, since they turn at 18500 rpm. The RS4 engine will have moving parts that can handle higher revs (8250) and intake and exhaust tuned to allow the faster flow of air. This is also why it generates more HP, but pretty much the same torque. Personally, I don't think the engine is going to be that much more drivable than ours, but it will be sweet on the track.
Useless trivia: all enignes generate the same HP and torque at 5252 rpm.
