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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 new and replacement engine components with their corresponding part numbers.

Identifier  ExFiles\Box 169\4\  img146
Date  16th July 1933
  
-4-

Connecting Rods IOP.M.100154.

New set of Bl. End Bearings E.100028 (White metal) fitted to existing Rods E.100026/7 (Forged Type.)

Pistons IOP.M.100158.

New set of Piston Rings E.100037/8 fitted to existing E.100565 Pistons.

Cylinder Head IOP.M.100881 - Lec.3306.

The following New parts fitted incorporating.
Lec.3306 - Strengthened Exhaust Valve.
E.100931 Cylinder Head 6-1 Ratio.
E.100926 Exhaust Valve Guides.
E.1000F1 Inlet Valve Guides.

Valves & Fittings IOP.M.100804 - Lec.3305.

The following New parts fitted incorporating.
Lec.3305 - Strengthened Exhaust Valves.
E.100928 Exhaust Valves-(c/SLV.)
E.100927 Bottom Washers-Exhaust Valve.
2.100929 Valve Stem Packings- Exhaust Valve.
Lec.3352 - Strengthened Push Rods.
R.100665 Push Rods.
Strengthened Bridge Pieces produced in 14 SWG.(.080.) replacing 15.No.(.072.)
E.100195 Bridge Piece.
Existing E.100086 Inlet Valve (S/STD.)

Camshaft IOP.M.100112 - Lec.3223.

New Camshaft E.100883 107º.
E.100892 Cam Form.
replacing E.100882 Camshaft 105º.
Existing E.100110 Cam Wheel(I/C.)

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