Random Warbird Photos

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It is from one of the Allison Service School Handbooks - and I think most are on this forum if you do a search

I have never seen anything similar covering exhaust stains but tetra ethyl lead stains tended to be off white (and varied due to differing TEL levels and mixture levels and how much oil the engine was consuming) while black indicated the engine had been running very rich.
 
N28SF (4).jpg

N28SF

22 June 2025

Ypsilanti Michigan

Cheers

Jeff
 
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N145WB

22June2025

Ypsilanti Michigan

Last pic for a bit. Annual fishing trip begins tomorrow morning at 03:00hrs. A short 14 hour drive and I start catching fish on Sunday.

Cheers

Jeff

That double oilcone on the borate bomber is living up to its name.

Nice to see one kept as a borater as that is the only thing that saved many turkeys from scrapping.
 

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