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).
Inspection report detailing the condition of various engine components and their associated measurements.
| Identifier | ExFiles\Box 124\1\ scan0114 | |
| Date | 20th May 1939 | |
| -2- HPS{Horace Percy Smith - Experimental Factory Mgr}/RH.{R. Hollingworth}1/BA.20.5.39. Pistons LOP.EB.4318. Pistons chalk tested - free from cracks - Measurements including ring side clearances taken and recorded. Maximum ring side clearances taken .0015". Gudgeon Pins. Magnetically tested - condition good. Cylinder Head LOP.EB.4131. Cylinder Head has been crack tested - condition good. Inlet Valve Guides.- Condition good - maximum wear .0005" - Seats of inlet valves are in good condition. Valves & Fittings LOP.EB.4112. Valves have been acid tested for cracks - condition good. Valve Springs No.6 inner valve Spring (E.86364 P.III type) broken at second coil from bottom. Rocker Bushes - Slightly worn locally. Camshaft & Fittings LOP.EB.4314. Camshaft has been magnetically crack tested - Condition good. Distributor Driving Gear. - Condition good - wear between gears negligible. Bottom tappets. have been magnetically crack tested - condition good - measurements taken and recorded. Water Pump LOP.EB.4208. Main Body - satisfactory condition. Rotor Spindle -(S.K.F. Sealed bearing type, Assembly EB.3930) excessively corroded. Gland.- Internal dia. distorted - may be causing flooding of S.K.F. bearing. Timing gears.- Cam wheel has been chalk tested - condition good. there is .002" backlash between camwheel and crank pinion. HPS{Horace Percy Smith - Experimental Factory Mgr}/RH.{R. Hollingworth} R.H. | ||