Hi to all interested in old aero engines, I have made further progress to the Lion engine recently, the cylinder block assembly’s are also complete and the engine carrier has been started.


Andy
Hi Rlangham and all,
I will be there also, pack your sunblock.
Andy
Hi David and all,
I also went over and got a couple of piece’s.
Andy
Hi Creaking Door and all,
The Lion has 5 roller bearing’s and a plain bearing on the crank, the rear bearing in the photo and the front are smaller than the middle three.
The rod’s when first removed,

and after a clean,

Andy
Hi Creaking Door, well done,
Close enough, Napier Lion rear crankshaft bearing, reconditioned ready for rebuilding.
Andy
Hi Pete,
Packard “X” ?
Andy
Hi Pete and all,
The bearing is a recon unit.
I used to run a maximum boost of 34psi, but at anything over 28psi it would wheelspin in 5th !
Hi topspeed, is it a Dyna-cam barrel engine ?
Andy
Hi Pete, Creaking Door and all,
one for you,

Andy
Hi Pete,
The only engine that modern of that period I can think of is a Green ?
By the way, what does “200 inches of manifold pressure” equate to in modern speak ?
Andy
Evenin Pete,
is the first a Siddeley-Deasy ? the last a Napier Nomad ?
Andy
Hi Pete,
What are you doing on here, you need to spend more time in the workshop ! have you had an hour off lately !
I like the aeroporn, Germanic by any chance ?
Andy
Hi ZRX61,
I have one,

Andy
Leonides ?
Hi Roger and all,
Both engines have decompressor linkage fitted which indicates they are early, probably series II or IIB, the older of the 2 has a gas starter system, the more recent a fuel primer and a hand crank.
I haven’t got the expertise to comment on why the engine numbers are so far apart for a pair of aircraft built together.
23812
24541
The Smithsonian museum were very helpful with information and photo’s.
Andy
Hi roger and all,
I have found further information regarding the 2 Lion engines with the Smithsonian museum, they are from a pair of Blackburn Swift “F” aircraft No.s A6056 and A6057, built in 1923 and on test at the US Navy base at Anacostia.
A6056 had a minor accident in October 1924 and spent 2 hours in the sea before recovery, this aircraft was then used as spares for A6057.
All the information has come from the Smithsonian and the excellent “Blackburn Aircraft since 1909” by AJ Jackson.
Andy