fubar57
General
I was querying his RESP: to you
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It's an engine breather....much like the pre-60's auto engines had.....they vented to the outside. In the P-51 the termination of the vent was flush with the skin, so when an engine was tired and had "blow by" it messed up the side of the fuselage. Look closely at some photos and see when clever crew chiefs extended the pipe by about 2-3" and then the 'blowby' wouldn't streak the side of the fuselage. In the attached photo you can see the shadow from the extended pipe.I feel like a total idiot for asking, but on many a Mustang you see, what gives with the massive oil streak starting at about the rear of the engine cowling and arching back down the fuselage?
I know I know, I should know that, I go to penalty box two minutes... feel shame.
It's an engine ventilation exit....internal pressure inside an engine must be vented to the outside....until the PVC valve in the 60's, all auto engines vented to the outside. The P-51 vents out where you noted....however some folks extended the exit a little so the blowby wouldn't streak the side of the fuselage. You can see in the photo that the nearest plane has the extension (see shadow) and the second one does not.I feel like a total idiot for asking, but on many a Mustang you see, what gives with the massive oil streak starting at about the rear of the engine cowling and arching back down the fuselage?
I know I know, I should know that, I go to penalty box two minutes... feel shame.
P-51D-25-NA 44-73105 1946 USAAF 42nd DRS, Transferred to the Italian AF as 4293. It looks like it's carrying the nose markings of the 359th FG, maybe the 486th FS? Also you can see a previous fuselage marking MO*??Original WWII Snapshot Photo - P-51 With Nose Art at Ausbach, Germany | eBay
Baugher; 44-73105 (MSN 122-39564) to Italian AF as MM4293
View attachment 591519
Didn't 486-th FS. belong to 352-nd FG.?P-51D-25-NA 44-73105 1946 USAAF 42nd DRS, Transferred to the Italian AF as 4293. It looks like it's carrying the nose markings of the 359th FG, maybe the 486th FS? Also you can see a previous fuselage marking MO*??
Excellent.....thanks for the information.Didn't 486-th FS. belong to 352-nd FG.?
IMHO the nose markings are those of the 20-th FG. The old code still visible is MC-H. MC is the coding of the 79-th FS.
Check e.g. MC-J for comparison:
View attachment 591542
MC-H was called "Short Snorter":
View attachment 591543
Source for the above photos: 20th Fighter Group – Little Friends – US 8th Army Air Force Fighter Command
These ar RAAF Mustangs - see A68 identifier on both photos. A recent photo (#749) shows A68-187, a photo reconnaissance bird.