He also says it’s an “old wives’ tale” that a properly set up gear drive will transfer undesirable harmonics into the valvetrain.
Wah Wah Wahhhh...busted! Coming from the maufacturer. Its hard to transfer harmonics across a big crack, ie .003 lash. Snow skis use a 'cracked edge' to reduce vibrations sent the the ski itself. to Why dont manufactures use them? Because they are noisy!!! and they are not cheap...
BTW..."..Volume 2 engine masters did a cam drive comparison on a 440 mopar. milidon fixed idler, cat copy of the pete jackson dual idler, comp cams adjustable timing chain set, jesel belt drive.
total hp, timing chain 633.5 hp. Milodon 636.3 hp, dual idler 634, jessel 633 hp.
average hp, chain 596.4, fixed gear 596.3, dual idler 596.3, jessel 594.2..."
