Thursday, May 19, 2011

Antique Ford Engine Rod Bearing Weight and Suitability

Rod Bearing Weights and Their Importance to Antique Ford Engine Performance

I have identified at least 32 brand names of 1932 to 1938 Ford V8 flanged rod bearings. Weighing 10 pair of rod bearings on a postal scale, I have observed weights ranging from 177g to 211g.

To achieve perfect engine balance, all parts that rotate or reciprocate must weigh the same as similar parts (e.g. pistons, connecting rods, rod bearings). My arbitrary standard is that any pair of bearings should weigh within one gram of the other pairs in a given engine.

One gram = 1/28.35 oz.

One other preference of mine is not to run uncoated bronze bearings on the steel shaft because the old timers say it will be harsh to the crankshaft.

Best of luck with your antique Ford car or truck,
John W. Shelor

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  1. It is really amazing sometimes how something has small as a rod bearing can have such an impact on how a car functions. A car is seriously like a watch where every piece whether it be big or small must work in unison for it to work right. I am personally restoring a 1938 Ford right now and I can't wait for it to be done.

  2. Hey nice blog post. Good work. Keep it up.

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  3. Classic Truck Accessory - thanks for your comment. It is very important that all the components work in unison.

  4. Thanks for the useful Repair informational post! I have reviewed your blog carefully.
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