number of hours to swap engine?

GeorgeC

GeorgeC

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GeorgeC
What is a SWAG on the number of hours it would take an A&P to perform an engine swap on a 1940s-era aircraft?
 
Think Cub/Luscombe/120/140/etc.
 
Cub should be done in a single day, 120/140, two days at the most. This is with the assumption that the mechanic has everything needed in the way of hardware at hand and it's just a just a straight swap.
 
Lots of variables. I wouldn't expect a Cub swap
in 8 hours. More like 12. Cessna not much
longer. If the old engine's been in there a long time it'll take longer for old oil lines, stuck
nuts, etc.
 
Craig said:
Cub should be done in a single day, 120/140, two days at the most. This is with the assumption that the mechanic has everything needed in the way of hardware at hand and it's just a just a straight swap.
Click to expand...

Thanks!
 
Lol. The OP made my mind jump to WW2 aircraft when I saw "1940s-era". That would be a far different discussion and answers. :)
 
Identical engines? Are the cowls already off? Prop? There's often more to the swap than just substituting the old engine for the new.
 
GeorgeC said:
What is a SWAG on the number of hours it would take an A&P to perform an engine swap on a 1940s-era aircraft?
Click to expand...
I've owned a cub , 2 140s and two taylorcrafts. Also a champ. All took over one day , usually two or three, maybe a week. Reasons usually included mechanic did not have replacement part, found muffler to have a leak, had to take off and repair, rubber shocks that bolt to engine mount not in stock, one cylinder compression very low, replaced, etc. etc. ( all these aircraft had been rebuilt and were in very good condition but when aircraft are 50-70 years old things happen. ) two were trophy winners.
 
I have swapped an engine in 8 hours or less. A lot of time is spent safety wiring baffling and accessories. If you don't have to swap baffles and assesories it can be done in less time.
 
GeorgeC said:
What is a SWAG on the number of hours it would take an A&P to perform an engine swap on a 1940s-era aircraft?
Click to expand...
My engine rebuild on the 120 it took 1 hour to remove the engine and put it in my jeep. to put it back on after over haul required 4 hours.
On the 170 that got tipped up at AWO I took it off in 3 hours because the cowl was messed up really bad, after rebuild putting it back was a full day because we had to re-fit the new cowl.
When you are not disassembling the engine on the mount, it is simply a throttle cable, 1 fuel hose, mixture cable, generator 2 leads, oil temp probe and oil pressure line, then any thing fouling the mount, and the mounts them selves. then pull it.

Got the right tools? easy do in 4 hours.
 
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