I have been doing some winter maintenance on my 7-70 in my corsair which means I removed the cowl. On an earlier post I discussed the importance of preventing corrosion. My last flight was about 3 weeks ago and two weeks later I happened to turn the prop and the engine felt just a bit "crunchy" meaning there might have been a bit of corrosion set in. I removed a bottom cam follower and the draining oil had that corrosiony smell. What I did was I added much more air tool oil and blu-block and turned the engine with an electric starter. I drained the new oil and added another shot of oil. It was clear and smelled good. I decided to inspect the interior and fortunately it was not corroded but I feel better! I heard some one liked the corsair and wanted to put a new 7-77 in it so here are some photos of my installation. Looking closely I made a ply and cherry stand-off for the engine that was painted with dope. The engine box is not in the correct location for the engine. The two lower mounting holes are fine for blind nuts behind the firewall but the top mounting hole could not be used but the inner one could if you run a bolt from the inside to the front and then use a nut to secure the engine. I hope the photos are useful. -Tom

PS the stand off length is one inch and a sixteenth. The manual for this model was way off.