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300 HP Miller 4 cylinder engine Coolspring 2007

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Uploaded by on Oct 21, 2007

This is a video of the 300 HP 4 cylinder opposed Miller engine in operation at Coolspring, Pa. It was filmed at the 2007 October show. Originaly this unit was belted to a large IR air compresor where it supplied air pressure to run steam engine powered oil field wells. Although the video only shows the engine, the original air compressor is in the engine builing and will be belted to the engine in the future

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Autos & Vehicles

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Uploader Comments (wgrenning)

  • Beautiful! Do they run it all the time?

  • It runs several times each day during the June & October Shows

  • Yes, This is a natural gas engine made by Miller engine Co Ohio

Top Comments

  • must be scary as hell when one of those throws a rod

  • As big as that flywheel is, I bet that beast runs for half an hour after the fuels been shut off!

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All Comments (32)

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  • Imagine the amount of torque that puts out, not to mention if an engine that size ran away out of control!

  • @Torvikholm

    It's not a Boxer engine. In a Boxer engine, the connecting rods on opposing cylinders are not connected to the same journal. 

  • It's certainly a magnificent piece of machinery.

    Thanks for sharing it with us.

  • interesting machine. sounds good too!

  • how about putting that Boxer into a Porsche? 

  • wow, she moves

  • Considering what the pistons and the connecting arms weigh, it amazing to think they are moving with such velocity: from an instantaneous dead stop to maximum acceleration then back to a stop in a blink of the eye! It was also amazing what our fore fathers created with the tools they had... thanks for posting and sharing these historic examples of Americana! Roy Lewis Atlanta, Georgia USA

  • what kind of car would that be put in to?

  • Belt up a 20 ft. fan blade to that sucker and you'd never need air conditioning.

  • Omg I wonder if anyone ever hit that big wheel.. Instant death :O

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