The silent shaft 2.6 Mits motor was introduced in the 70's.

Porsche licensed the technology from Mitsubishi. One of the Mitsubishi features included locating the shafts at differant heights to not only cancle out the second order vibration from the differances in piston acceleration of TDC VS BDC but it also it helps to reduce vibration from the power pulse.

Kevin

87 Turbo Intercooled Raider, roller cam, torsen rear diff, LSD front diff, lockup auto with modified converter, V6 brakes, low transfer case gears...