Frontal areas of WW2 aero engines

[Jabberwocky]

I was wondering if anyone has any definitive figures on the frontal areas of various WW2 piston powered aero engines?

All I can find are comparative figures (eg the Griffon has 6% greater frontal area than the Merlin. The Sabre had 24% greater frontal area than the Griffon)

Also, frontal area per hp would be interesting for comparison. I know there are some USAAF and NACA documents comparing frontal drag rations and power/drag ratios for R-1830/R-2800/V-1710 engines out there, I just can't find them anymore...

[krieghund]

This data is from Paul H. Wilkinson’s series entitled “Aircraft Engines of the World”

Engine Type Frontal Area sq ft
Sakae 21 10.6
Atsuta 21 5.4
BMW801D 14.7
Ju213-A 6.3
Db601E 5.4
Db603A 7.0
Db605B 6.9
Db605A 5.5
Gnome-Rhone 14N 14.0
Fiat A74-RC38 11.9
Klimov M105P 5.5
M-82FNW 13.4
AM-38A 5.8
Centaurus 57 16.6
Sabre Va 8.8
Pereus 100 16.6
Merlin X,XX,45 5.8
Merlin 61,63 6.1
Merlin 66,100 series 7.5
Griffon 65, 69 7.9
Allison V1710-C15 6.2
V1710-89,F17 6.1
V1710-131 6.2
Packard V1650-1 5.8
V1650-3,7 5.9
V1650-9 7.5
P&W R1830- Series 12.6
R2000-D 13.4
R2800-B Series 15.0
Wright R1820-G&H Series 16.6
R2600 B Series 16.0
R3350 B Series 17.0
RR Derwent 1, V 10.1
GE I-40 (J33) 14.7
DH Goblin II 13.6
BMW 003 A2 (TL 109-003) 4.0
Junkers Jumo 004 B4 (TL 109-004) 4.9
Hirth He 011 (TL 109-011) 6.4
BMW 018 (TL 109-0113.1
(TL 109-01

I have alot of his volumes unfortunately they are home in storage as I only work in Saudi