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).
Valve timing, tappet clearance, valve lift, and tyre specifications for the 22-EX model.
| Identifier | ExFiles\Box 13\4\ 04-page004 | |
| Date | 14th July 1932 guessed | |
| 22-EX Valve Timing. .020" Tappet Clearance. I.O. .35" PTDC 2.60 E.O. 6.75" BBDC 50.20 I.C. 7.2" PBDC 53.60 E.C. 1.25" PTDC 9.40 Inlet valve lift = .451 + .005 clearance Exhaust " " = .450 + .009 " 7 x 20 tyres - 104.25" 7 x 21 " - 107" with 50 lbs pressure. | ||