On some of the Cummins 4BT charts, the difference in compression ratio is only .5 for turbo vs. non turbo pistons. For what you are doing, just run it without the turbo, just the exhaust pipe and you'll be fine.
If you talk to older mechanics you will hear stories of engines that ran for years or goodness knows how long before they found out the turbo was stuck and not spinning.
The biggest thing you may notice if you get pulling a heavy load is more diesel smoke from some unburned fuel out the exhaust pipe. Under a light load the turbo does not add much boost anyhow if you watch a boost gauge.
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Today's Featured Article - Tractor Profile: Farmall M - by Staff. H so that mountable implements were interchaneable. The Farmall M was most popular with large-acreage row-crop farmers. It was powered by either a high-compression gas engine or a distillate version with lower compression. Options included the Lift-All hydraulic system, a belt pulley, PTO, rubber tires, starter, lights and a swinging drawbar. It could be ordered in the high-crop, wide-front or tricycle configurations. The high-crop version was called a Model MV.
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