QUOTE(930cabman @ Jun 5 2021, 05:52 PM)
Thinking out loud, our 914/4 will never use the heating function, why would we not close off the rectangular outlets in the aluminum fan housing and divert additional cooling air over the cylinders?
Thanks
There was a lot of debate about this in the early mid 2000's, Jake Raby did some temp tests and found leaving them off and open actually cooled better. The other thought was to smooth over the interior duct openings and the common opinion was to block them off the traditional way.
My opinion is to build the engine properly so it doesn't overheat to start with.