Here is the detail of the weight info
for my pusher 20B (265hp) installation. The first column includes
EVERYTHING (including coolant) back to the prop flange. The right hand
column is the number that is a reasonable comparison to what Lyc publishes for
an IO 540.
|
Engine/Ancilliaries
|
|
|
|
|
|
|
|
|
|
Engine
|
260.0
|
|
260
|
|
Water Pump (inc. )
|
|
|
|
|
Alternator (inc.)
|
|
|
|
|
Air Pump
|
0.0
|
|
|
|
Oil pan
|
4.5
|
|
4.5
|
|
Induction Sys (comp)
|
10.0
|
|
10
|
|
Exhaust Man/Muff
|
12.5
|
|
12
|
|
Sec muff/Exit pipe
|
3.5
|
|
|
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Mount brackets
|
3.5
|
|
|
|
Coils w/bracket
|
4.5
|
|
|
|
Starter
|
7
|
|
|
|
Re-drive
|
43
|
|
43
|
|
Main mount
|
15.0
|
|
|
|
Radiator 1
|
4.5
|
|
4.5
|
|
Radiator 2
|
6.0
|
|
6
|
|
Aux cooling fan
|
0.0
|
(none)
|
|
|
Oil cooler
|
10.0
|
|
|
|
Expansion tank
|
0.6
|
|
2.5
|
|
Fuel pumps/filter
|
3
|
|
|
|
Lines/fittings
|
4.5
|
(Est)
|
|
|
Coolant
|
18.0
|
(Est)
|
18
|
|
Exhaust baffle
|
2.5
|
|
|
|
Misc
|
3
|
|
|
|
|
|
|
|
|
Total Powerplant
|
415.6
|
|
355.5
|
These numbers are reasonably consistent
with John’s weight of 304# for the 13B when you take off the roughly 90#
for the additional rotor and the heavy center housing of the 20B; and a couple
of other things he didn’t include.
Al