The old chevy you referred to had 14 psi oil pressure to mains etc and the rods were fed through a pressurized dipper system. Talk about engineering. GM had a tool to align the nozzles spraying those dippers. No way of knowing how much pressure the rods actually received with a spray of oil coming at them when that engine was turning over. Chevy claimed a lot of pressure due to the dipper collecting that spray of oil, but was not unusual to knock out a rod bearing. Had a couple of those engines.
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Today's Featured Article - New Life for an Old Allis - by Tyler Woods. My friend Jon, has an old '39 Allis Chalmers B. He thought it a marginal tractor that had long since served its time. She smoked terribly and never had much power but he couldn't afford another so he was limping along with what he had. Jon's Allis has a small front loader and though it doesn't carry much, it serves his needs. It was the hard starting and low power that made him think it was time to replace the old girl. Jon called me to help him discover why his tractor wouldn't start
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