Originally Posted by greekthang
Why do you say its weird. The Euro car is 300lbs lighter with a LSD diff. The 330ci had 3.15 but no LSD plus lighten flywheel and M5 clutch combo. Raced them many time and every time was the same. A loss for the 300ci so its not weird. Its fact. That euro would beat a E46 M3 as well.
330ci weight only 140lbs more than 328is(with stock engine)
2.8l engine weight 308lbs
3.2l eurospec weight around 345lbs
I dunno, but I hope you would agree with me that 6spd tranny weight more than 5spd. So lets just be modest and say it weight 10lbs more.
so 328is with his swap would be around 3190lbs
Stock 330ci is 3285lbs. Lets say supercharger added another 30lbs so 3315lbs
now lets see
317hp - 3190 - (euro engined 328) 10lb/hp
286rwhp(or around 335hp) - 3285lbs - (sc 330) 9.8lb/hp
So, power to weight ratio is pretty much the same, but now lets look at the torque.
euro engined 328 - 258lb/ft, so 12lb per lb/ft
330ci SC - 262lb/ft at the wheels which is about (306lb/ft) 10.7lb/ft.
330ci has an advatage here.
So that race should've been even, or 330ci slightly pulling away.
P.S. I know all this calcutalions wont change the outcome of the race, 330ci lost and its simple as that, but I'm surprised why it happened. I'm not doubting the outcome, I just find it a bit wierd.
P.P.S Stock 3.2l euro m3 WILL NOT beat stock E46 M3. Just go on any european BMW forum and ask. Maybe your buddy got more than just euro m3 engine? just like you got only 2.8l engine
P.P.P.S How much boost is 333ci running?