Re: lightweight crank pulley-d14/d16
Posted: Sun Apr 29, 2012 2:29 pm
here are a few old videos of the engine revving in idle with the Fidanza and lightweight pulley [0.8 kg pulley vs 3.5 kg stock]:
http://www.youtube.com/watch?v=52RgyRfb8-g
http://www.youtube.com/watch?v=Cv3uPKkVRQA
http://www.youtube.com/watch?v=lbewGF8XfTA
the revs do drop slightly quicker but I just shift quicker to compensate. other than that, I felt an *increase* in wheel torque and not a decrease as several people keep saying. the reason being that a lesser proportion of torque is needed to accelerate the flywheel and hence more of it is available at the wheels.
here are a couple of VBox plots before and after the pulley and fluwheel change.
before: http://www.d-series.org/forums/attachme ... 0_vbox.jpg
after: http://gearheads.in/attachment.php?atta ... 1314548721
http://www.youtube.com/watch?v=52RgyRfb8-g
http://www.youtube.com/watch?v=Cv3uPKkVRQA
http://www.youtube.com/watch?v=lbewGF8XfTA
the revs do drop slightly quicker but I just shift quicker to compensate. other than that, I felt an *increase* in wheel torque and not a decrease as several people keep saying. the reason being that a lesser proportion of torque is needed to accelerate the flywheel and hence more of it is available at the wheels.
here are a couple of VBox plots before and after the pulley and fluwheel change.
before: http://www.d-series.org/forums/attachme ... 0_vbox.jpg
after: http://gearheads.in/attachment.php?atta ... 1314548721