Originally posted by Tony D:
But that approx 10hp loss is huge in an atx! Or is that number off?
HP isn't lost by weight. A 200 HP engine has 200 HP whether it has a 300 lb flywheel or a 3 lb flywheel. The heavier one will just accelerate slower. (being picky here I guess, but an intake mod may increase HP, but not a weight change)
However, The loss in acceleration results in 1/4 mile time reduction which could be compared to an equivalent HP loss. I doubt the DMD affect on accelleration could be measured. And since vibration is an energy loss, reducing it provides more energy for other things, like acceleration. Of course, your mileage may vary.
For practical purposes, it would be interesting to see a consisent driver compare DMD and non-DMD times. A smoother engine may keep traction longer, have more HP available for acceleration than a non-dmd. Of course, I may be wrong, but I don't think you can just weigh the DMD and declare a 1lb increase will decrease peformance without considering the other factors that affect the motor positively.
