Quote:
Originally Posted by Dimman
170 lb-ft is completely possible at 210 psi BMEP, about the same as the new Porsche 3.8L gets (less actually the 3.8L makes 211.7 psi BMEP at its torque peak).
It's the rpms that don't match up.
BMEP maxes out at torque peak and tapers off. The Porsche motor makes 211.7 psi BMEP at 5600 rpm. At its power peak 1800 rpm later, it has tapered down to about 90%.
For the mag numbers to make sense the FT86's BMEP can't drop after torque peak, which is impossible.
For it to make 200 hp @ 6500 rpm instead of 210 it would only be allowed to drop to 95% of peak BMEP over a 2500 rpm spread. This would be astounding.
Realistically I would say the 210 psi max BMEP (creating the 170 lb-ft) IS possible. But for it to make 210 hp with it dropping to 90% BMEP over, say, 2000 rpm (similar to the Porsche motor) the rpm numbers will be different.
210 bhp @ 7200 rpm and 170 lb-ft @ 5200 rpm (possibly as high as 5400 rpm) would be a more realistic guess for a 210 psi BMEP figure.
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its possible on paper, but i'm looking for a real life example of a 2.0L 4 cyl engine that makes 170 ft lbs in production form. anybody have examples?
Quote:
Originally Posted by KevinDuMa
Honestly if the Hyundai Veloster can weigh 2600lbs, so can the Ft-86
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yeah, the miata with PRHT and all the options weighs a little over 2600. how much crap would they have to add to the FT to make it 2800? not happening...