14 hp increase from a driveshaft swap
14 hp increase from a driveshaft swap
(OP)
undoubtably an inertia dyno
http://www.coastdriveline.com/NEW_Mustang.htm
http: //www.coas tdriveline .com/Press Releases/C oastPRs/Mu stangDrive Shaft/Imag es/HiRes/M ustangDyno _HiRes.jpg
The hi res hp/torque chart confused me. the HP and torque scales are shifted. The displayed values near 2500 rpm indicate a 30 lb-ft increase (the ad only takes credit for 16), and a 14-ish Horse Pressure increase, which is correct for 2500 rpm. That "torque increase" amounts to about 10%, so my first thought was the original 2 piece steel driveshaft inertia represents about 20% of the driveline inertia. I've started wondering if maybe an aluminum flywheel was added between dyno runs too
http://www.coastdriveline.com/NEW_Mustang.htm
http:
The hi res hp/torque chart confused me. the HP and torque scales are shifted. The displayed values near 2500 rpm indicate a 30 lb-ft increase (the ad only takes credit for 16), and a 14-ish Horse Pressure increase, which is correct for 2500 rpm. That "torque increase" amounts to about 10%, so my first thought was the original 2 piece steel driveshaft inertia represents about 20% of the driveline inertia. I've started wondering if maybe an aluminum flywheel was added between dyno runs too





RE: 14 hp increase from a driveshaft swap
In my experience, lightening up the the rotating mass of the power train did not get me a lot of extra hp and tq, but sure made a big difference in accel and decel rates, big time.
As an aside, our Lotus Cortina came OEM with a two piece. I switched to a single and after only a few races switched back because of accelerated front 'U' joint wear. Never saw any change in power on the chassis dyno...NONE!
Rod
RE: 14 hp increase from a driveshaft swap
now I'm daydreaming about what might have contributed about your front U-joint wear
RE: 14 hp increase from a driveshaft swap
Rod
RE: 14 hp increase from a driveshaft swap
ISZ