wjb
Well Known Member
I went with a mini-duct per a later DanH post ..it was easy to make and gives more cross sectional area for the air to get through. YMMV, but my #3 has no cooling issues. I did a similar thing on the front of #2, tucked behind the IO-360 snorkel. The only cooling mod I had to do after break-in was to remove the dam in front of #1.
(photos prior to sealing with RTV)
(photos prior to sealing with RTV)