In a previous article, Orval Fairbairn said:
What we found (and corrected):

1. The oil cooler had insufficient airflow (both in and out). Remember
-- any cooling MUST provide an exit path for the air, as well as an
entry path. This installaltion had neither.

2. There was no blockage of cooling air in the nose bowl behind the
spinner, allowing air to exit behind the spinner. We installed the
appropriate baffles and seals there.

[etc]

Ok, this is where I get confused. I'm not a builder (yet). Don't the
plans or kit instructions tell you how to do all this? Do people diverge
that much from the plans, and if so, why?


--
Paul Tomblin http://blog.xcski.com/
Microsoft: bringing the world to your desktop -- and your desktop to
the world.
-- Peter Gutmann