Re: crank shaft counterweight removal

Posted by Owen_Dyneto On 2017/12/1 20:12:40

If you're planing a regular diet of speeds in excess of what these cars were designed for, by all means consider inserts and/or high speed ring and pinion or overdrive. I stayed with babbit on my 1934 Eight and with the stock rear axle ratio my comfortable cruising speed is 40-50 mph. My original poured bearings had a service life of 82,000 miles. I've done many thousands of miles touring in this car and honestly, I enjoy avoiding the Interstate highways.

Poured bearings are more gentle on the crankshaft journals due to their ability to imbed particles, the also have more latitude with respect to resizing the crank, and they directly provide the rod thrust faces which require other solutions if going to inserts. But, and a big BUT, is that poured bearings won't give great service life if subjected to a steady diet of today's highway speeds without at least the benefit of overdrive or a high speed rear axle.