Turbo 616 powered Astro Van build
Turbo 616 powered Astro Van build
It will still vibrate Evan if you get the balanced perfect. If it dose not weigh enough that's the problem the 300d 4spd swap guy have running a 240d flywheels. Evan after matching balance on a 240d flywheel to the 300d's original flywheel. There is not enough mass to smooth out the natural engine vibrations on the 617. The 300d manual flywheel has a ring of weight on the out side of the flywheel to move the balance weight to the outside diameter of the flywheel
original om617 manual flywheel picture