Quote:
Originally Posted by t-head
Good question.....Yes, it probably is an oil tank as early racing cars leaked and burned a lot of oil. The air pump on the cowl no doubt pressurizes this tank with air. An oil line was run from the tank to a valve accesible from the cockpit which would allow you to put as much oil in the engine as needed.
On some engines that were set up with a dry sump system, a tank like this could also have been used to hold the oil, cool it and then it would return to the engine.
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Thanks T-head. Very much like what the salt flats guys did. Guess this is where they(salt flats guys) got it from.