Re: Engine rattle

Posted by HH56 On 2008/12/20 16:42:22

When the original Ultra was developed, it started in high and made the transition to direct drive only. Low was available but almost not used for anything but hills or stump pulling. While it was a very smooth takeoff, you could almost walk as fast as the car accelerated. People wanted faster acceleration so would start in low and manually shift to high without letting off the gas which usually caused major damage to trans in short order. Late 54, the twin ultra was designed to do the shift automatically 1-2 2-direct drive like a convention 3 spd (D button or position). The original high to direct only was left in (H position or button) for those that still wanted the smooth shift. D is the performance mode, H is the conventional.

Timing is distributor adj.

Good that there is no runaway as that was one of the major issues when shifting manually as the high range clutch plates burned..