4x5"oval inlet, about 17 sq in. Close
to ideal diffuser.
CX Racing 11" 25 row knockoff. 2" thick, 76" sq in area.
So far no oil temp problems, but then I don't think I've gotten
close to my 190 HP target. Overpropped for climb. (76x88 prop)
Max engine RPM straight and level about 6,400 @ 5,000' and 65F
OAT. 170mph TAS. Engine monitor showed14.7 GPH, but looks like
that's 50% higher than actual. So more like 10 GPH and 120 HP.
That produced 210F oil temp in and 225 oil pan oil temp.
RV-4 with no gear leg fairings nor wheel pants, so looks
promising.
Note that I don't fully trust oil in temp; probe is mounted in
alum bock mounted on engine close to coolant passages, so could be
subject to some heating by engine block.
Finn
On 5/13/2021 5:00 PM, Matt Boiteau
mattboiteau@gmail.com wrote: