A Cooling question for you guys using a YS 160-70 in a Shinden. I'm in the process of completing my Shinden with a YS 160DZ. What cooling holes need to be made in the Cowl to allow enough air out to keep things cool? I can install the cowl over the engine and everything clears but I'm concerned that I'll have enough exhaust air escaping from just the hole to access the glow plug. How big and how many holes need to be cut to get the air out? Any baffles needed?
Thanks,
Dave Burton