O.S. GT33 Gas Engine on PSP Test Stand
I just started breaking in this GT33 on Sunday 6/3/12 on a PSP Vibration Dampening Test Stand. The engine is impressive and doesn't vibrate very much. It has very good power after only 32 ounces of fuel and runs very well. I have to hand start it as my small low speed starter doesn't have enough torque.

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O.S. GT33 with Tuned Silencer

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OS GF30 2

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O.S. GT33 Tuning and Testing - Part 1 - Header Only

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This Engine Breaks ALL the Rules

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