174 – Turbo-Normalized Bonanza Exhaust Valve Rescue!

I received an email recently from Spence, the owner of an S35 Bonanza with a Turbo-Normalized IO-520 engine. He included a picture of his #2 cylinder exhaust valve. Here’s what it looked like: At first glance, my reaction was something like, “Oooh, that’s ugly!” The most concerning area is the spot at the 10 o’clock […]