Quote:
Originally Posted by Romo
Can`t be true
Torque E46 M3 = 365NM =112,44 NM/L
Now if the BMW ///M people do the same for the new E9X M3;
4L*112.44=449.8 NM
Now if you take the torque of the E60 M5, 520 NM*75%=390NM
So something is wrong here, I think the torque will be just fine, and better than predicted......................................
I also believe the torque off the new M3 has to be better than that of the 335i (400 NM ), it would be a shame for the M3 and BMW if it isn`t better............................but I have confidence....................
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It is not very smart to compare the E46 M3 engine to E92 M3 engine - totally different design from bore and stroke to number of cylinders and configuration, etc. New M3 based on E60 M5 engine (+DGI it seems we know now) this means tq/l of new M3 prob. slightly better than M5.
E60 M5 tq = 384 ft lb * 4 l / 5 l = 307 ft lb
335i tq = 300 ft lb (probably under rated like hp might be about 360 ft lb)
I expect max. tq due to design improvements and DGI on M3 to be 325 ft lb maximum. Either way the minimum figure 307 is still better than the quoted figure of the 335i (300 ft lb).
Also many of your conversions and numbers are plain wrong:
1. E46 M3 tq = 262 ft lb = 355 Nm
2. Displacement of E92 M3 / Displacement of E60 M5 = 80% (not 75%)
Last but not least even though the 335i may be putting out about a whopping 360 ft lb tq (about as much as the M5 brochure number) it is still slower 0-60 and 1/4 mi than the E46 M3 with 100 ft lb less torque! hp, high redline and gearing is more important.
Don't worry about the new M3!