Shortened oil pans are the state of the art for Subie conversions, and Subie powered sandrails. They are not an issue. They are used by the thousands. Shortened is a subjective term. Because of its engine configuration, Subaru puts a incredibly deep oil pan on their engines. 7 inches deep. They do it because they can. Deep is good. Their engines are shallow vertically so why not? Most commercially available shortened Subie pans are 4 inches deep. Racing sandrails use the same thing, putting out 300-1000 hp and going straight up and down without oil pressure issues. If they needed a dry sump, the racers would be using them. 4 inches is deeper than most modern, stock, 4 cylinder engines. A great comparison - take a ruler to the pan on your WBXer. Take away the cooling fins, and it is 1 3/8 inches deep. 4 inches is still very conservative. John Vanaru.com |
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