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Small Cam/Big cam Cummins

40655 Views 19 Replies 12 Participants Last post by  Ambrosepiu
Whats the difference between a small cam cummins and the big cam cummins engine?
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I'm not sure pump oil pressure plays a very large part in keeping journals and bearing surfaces apart anyway. Do the math, the load is thousands of PSI across the bearing surface, and the thing that keeps them separate and oil in between is viscosity and the "wedge effect" of a plain bearing filled with oil....
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