Pure Grunt
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Jeff Jacobs at Dougan's Racing Engines pointed out that the Iron Eagle is intended for race applications with dry-sump oiling and therefore does not come with oil-drainback holes in the lifter valley. Since ours is a trail engine with drainback and cam-oiling needs, he drilled these holes, positioning them to ensure they did not intersect the bottoms of the lifter bores. View Related Article
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