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 components and modifications for Phantom III engine units No. 8, 12, and 14.
| Identifier | ExFiles\Box 155\2\ scan0271 | |
| Date | 18th November 1938 | |
| -4- PHANTOM III NO.8 (SPARE UNIT). Obsolete crankcase. Long type liners. Obsolete 6 port cylinder head. LEC.5320 small base circle camshaft. Half Fescol and half S/ZN cloudburst tappets. PHANTOM III NO. 12 UNIT (SPARE). Standard production unit, incorporating:- Packard type of balance weight crank LEC.5230. L section 2nd. compression rings. B side exhaust valves Sil.XCR. Std. 4 port heads and non hydraulic tappets. PHANTOM III NO. 14 UNIT (DISMANTLED IN SHOP). Standard crankcase modified to suit 1 1/2 engine speed pump and 25/30 dynamo. Strengthened connecting rods with production type big ends. Hall's forked rod and W/M blade rod. 3 in AC.6 and 3 in AC.2 6.5:1 Comp. Ratio Cylinder heads, otherwise 4 port heads with solid rocker gear. R.R Semi-split pistons. Liners A.1, 2 and 3 Std. Sheepsbridge. 4, 5 and 6 R.R. cast iron. B.1, 2 and 3 Hepworth & Grandage. 4, 5 and 6 Brico. Std. prod. camshaft. Magnesium lower half. Reduced section rocker covers. Fine grain idler wheel (Fabroil). Modified I section bottom tappets LEC.5667. Nos. 1, 2 and 3 blocks normal S/ZN plated tappets. Nos. 4 and 5 " Chilled face I/C. No. 6 " " crowned face. | ||