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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).
Revised specification for Chassis 58 G.N. Engine Unit Q.R.25, listing completed work and incorporated parts.

Identifier  ExFiles\Box 18\3\  Scan366
Date  10th October 1932
  
To. Hs{Lord Ernest Hives - Chair} from RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel}
c. Hd.{Mr Hayward/Mr Huddy} (Records)
c. AJL.
X7960.
RHC{R. H. Coverley - Production Engineer}/WSC{W. S. Cassel}9/AP10.10.32

CHASSIS 58 G.N. ENGINE UNIT. Q.R.25.
Specification of the above is revised as follows:-

WORK COMPLETED 7.9.32

Cylinder (5.25 Comp. Ratio) LeC.2993.

5.25 Comp. Ratio Cylinder Head fitted incorporating:-
LeC. 2993 - Double Valve Springs.
E.{Mr Elliott - Chief Engineer} 82455 Cylinder Head - Mod. to E.82960.
E.{Mr Elliott - Chief Engineer} 83094 Exhaust Valve Guides.
E.{Mr Elliott - Chief Engineer} 82958 Inlet Valve Guides.

Valves & Fittings LeC.2993.

The following details fitted incorporating:-
LeC.2993-Double Valve Springs.
E.83095 - Exhaust Valves.
E.82957 - Valve Stem Packings opened out to suit.
E.82458 - Inlet Valves.

Hs.{Lord Ernest Hives - Chair}688 & Hs.{Lord Ernest Hives - Chair}665 - Valve Springs.
Ex.8896 - Top Valve Spring Washers.
Ex.8899 - Bottom Valve Spring Washers - Outer.
Ex.8895 - " " " " - Inner.
Hs.{Lord Ernest Hives - Chair}502 - Tappet Springs.

Camshaft.

E.82448 Camshaft - 114° between Cams.

Spring Drive LOP. E.79915 - LeC.3104.

The following details fitted incorporating:-
LeC.3104 - Strenghted Friction Plate.
Ex.8680 - Friction Plate.
E.79729 - Damper Wheel - Mod. to Ex.8679.
E.76620/1 - Driving Dogs - " " Ex.8681/2
Con:-
  
  


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