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).
Weight comparison of valve gear components for Chevrolet and Wraith models.
| Identifier | ExFiles\Box 6\6\ 06-page224 | |
| Date | 18th June 1937 | |
| 600 18.6.37 CHEVROLET AND WRAITH VALVE GEAR. WEIGHTS CHEVROLET WRAITH. Inlet Valve........ 3.8 ozs............3.2 ozs. Exhaust valve...... 3.2 ozs............3.25 " Push rods.......... 3.25 ".............2.4 " Spring washers..... .66 "..............0.87 " Bottom tappets..... 2.75 ".............3.44 " Rocker complete.... 5.5 "..............4.6 " Total..............15.46 " Inlet Valve Mech 14.44 " "..................14.86 " Exh. 14.5 | ||