This is the installation of an 0-320 engine with Hal Hunt exhausts and a Elllison Throttle Body. I originally planned on an 0-235, but after discussing this with several EZ operators the O-320 came highly recommended. I had not installed the engine mount extrusions yet, so it was easy to switch to the larger ones. I also had the engine mount beefed up for the heavier engine.

Lower Engine Mount Extrusion	Lower Engine Mount Extrusion
Upper Left Extrusion	Upper Right Extrusion
Engine mount extrusions through Firewall	Engine mount extrusions through Firewall
Upper Left Attachment	Upper Right Attachment
Lower Left Attachment	Lower Right Attachment

Engine mount straight on

Engine Left Side	Engine Right Side
Trimmed and Fit	Trimmed and Fit

This was Featherlite Coweling. I have trimmed and fitted as well as installed the fasteners. I still am deciding on up-draft or down-draft cooling. I am leaning toward the down-draft, but will continue to watch Waiter’s www.iflyez.com down draft installation for ideas and how it comes out. 

Down Draft Cooling 

10-28-09 

I decided on the down draft cooling. I wanted the intake mod to be completely on the upper coweling for easy removal and replacement, plus less work. I liked what Nick Ugolini did, so I decided to do the similar mod. Used two part liquid mix for the foam. Caution, a little bit goes a long way. I had foam one foot above the cowling, but carving and shaping it was easy.

Ready to carve the foam	Right inlet carved. Left is ready
Right side glassed	Right side glassed
Down draft inlet	Down draft inlet
Cut out for inlet	Foamed and ready to be taped 11-15-09