Re: 1970 D crank bearing help please
The bearings on the fan side should be the same size. I have no idea what "looks different" means. Seems like the last ones I used were sealed both sides but they could have been replaced at one times with or without seals. If you are looking at two different places for the fan side seal get the part number and it probably should be the same as the ignition side seal. In other words I see no engine parts diagram with 2 fan side oil seals. However I do see a cam seal in the fan housing which may be what you are referring to. Please send photos or refer to a parts list page or service manual.
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