The JD 466 block is used from a low of 105 Horse power to the high of over 225 horse power. The main difference where the injection pumps, injectors, oil cooled pistons, turbos and intercooling.
So the JD 2555 injection pump is set at one fuel delivery setting and the JD 2755 injection pump is set at a slightly higher fuel delivery setting. also the JF 2555 naturally aspirated injection pump would be set higher than the injection pump on the turboed JD 2555. The Turbo would be more efficient on the fuel it used.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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