The solution to running the No3 bearing on a Triumph 4 cylinder 1500 race engine. Modified from a Kas Kastner original design (as detailled in his book) it's an external direct oil feed. That's what you see on the outside, what's on the inside is a crank specially cross drilled with modified oilways and oil circulation. It's really quite a simple mod in concept but getting there consumed quite a few 1500 cranks!

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