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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
List of corresponding weights for Merlin engine components.

Identifier  ExFiles\Box 132\2\  scan0090
Date  3rd April 1940
  
Lc/Cr.{Mr Cra???ster / Mr Chichester}/Bnl 7/BT.{Capt. J. S. Burt - Engineer}3.4.40.

MERLIN CORRESPONDING WEIGHTS
TO JUNKERS UNITS.

No. lbs. ozs. lbs. ozs.

1 (Crankcase 176 4 )
(Cylinder block 'A' side 35 14 )
( " " 'B' " 35 14 ) 348 7 1/2
(Liners 'A' " 35 13 )
(Liners 'B' " 35 13 )
(Side water rails. A& B side 19 12 1/2 )
(Reduction gear casing 19 1 )

2 (Magneto L.H. 14 2 1/2 )
(Magneto R.H. 14 2 1/2 ) 28 5

3 (Supercharger rear half 42 6
" front half 21 8
" vane ring 4 9
" guide vanes 1 7
" Rotor 3 15 1/2
" bolts S/C joint face - 13 1/2
" boost control 6 10 1/2
" rotor shaft & fittings 1 6 1/2 ) 82 11 1/2

4 (Ignition wire fittings exhaust L.H.) 8 2 }
(" " " " R.H.) } 16 0
(" " inlet assembly ) }

5 (Fuel pump,not including fuel - - ) 7 9 1/2
(supply pipe. )

6 (Induction pipe 15 3 )

7 (Main bearings Caps.7 off 10 10 1/2 ) 14 4 1/2
(Bearing bushes 7 off 3 9 1/2 )
(Centre thrust brg.2 lbs.1 1/2 ozs.)

8 (Bearing - Con.Rod lower 11 8 )
( " " " upper 7 13 ) 19 5

9 (a) (Connecting rods & pistons including 42 4
(piston rings,gudgeon pins,bolts, 9 7
(nuts,bearing housings,little end 13 5 1/2
(bushes. 11 13
3 3 1/2
2 2
2 14
2 1 } 87 2 1/2
  
  


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