As mentioned in my writeup of best mods and features, I Enlarged cooling air exits in bottom of cowling to improve engine cooling. I opened the exits approx. 4-6 sq inches per exit and that has kept my engine temps within range during all flight regimes, and all outside temps. It really has been the key to keeping the engine cool and happy.
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The old clutch is on the left, the new on the right. There are some minor differences visible, but otherwise appear interchangable.
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Updated: 20 Feb 16