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Ahhh, that^^ makes a lot of sense

Hah, thanks This makes most sense to me. Would you say the relative inefficiency is due to the requirement of running through a large range of revs, unlike a generator?

It's a forum right? People spend time here at their own will. It's not like the thread was inappropriately titled to draw in views. Thanks!! :D Very stoked to drive the car again when I get home in August. Plan on keeping the car indefinitely

Okay, understood. I for sure won't be asking about homework.

To be honest I knew it was a bit of a stupid question to begin with. For as long as I can remember I've related displacement and torque output to estimate relative engine efficiency (NA) in my head, just when looking at production cars. I know a BMW S1000RR will make as much torque as VW Up 3...

Wow, thanks for the info jgKRI! Have fun with the new M3! My dad has an e92 M3 ZCP 6MT... that v8 is a bit of a gem. I absolutely love the S54 though. Gotta drive an e30 one day... Anyway, I appreciate the response. I've been learning about friction and what the brake output actually means...

Thanks for the responses guys. I had a feeling I was thinking about it all wrong... I'm actually taking internal combustion engines right now so I know about BMEP and whatnot, I guess the thing I missed is that the torque at the flywheel is resulting from the continual running of the engine...

Hello all, I have a little question about piston engine theory; I was hoping you all could enlighten me. For reference, I am a junior undergrad in mechanical engineering at the University of Illinois (currently studying in Munich-TUM for a semester). I'm a huge a car/motorcycle fan. I'm...