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).
Engine specifications for a 1937 Buick 30 HP - Model 40.
| Identifier | ExFiles\Box 125\3\ scan0023 | |
| Date | 13th October 1937 | |
| 1049 1937 BUICK. 30 HP. - MODEL 40. Valve Springs. Two springs per valve. Outer springs close coiled. 3 out of 7 coils Free length 2.30" Inner spring 9 coils. Free length 1.90" Valves. Inlet Valve. Ni. Cr.{Mr Cra???ster / Mr Chichester} ) These do not foul the Exhaust valve. S/SLV. ) piston if stuck open. Valve Timing. I.O. 13°E; I.C. 68°L; E.O. 55°E; E.C. 22°L. Firing Order. 1 - 6 - 2 - 5 - 8 - 3 - 7 - 4. Performance. 100 BHP at 3,200 R.P.M. Bore 3-3/32" Stroke 4⅛"; C.R. 5.7"; Piston Top of piston crown .060" below top of block. Gasket "Hallite" type .052" thk. Tappet clearance. .015" Push Rod. Tabular type. .400" diameter x 13" long. Bottom tappets. Wraith type. In I/C with lightening or oiling holes in the sides the cam appears to run the full width of the follower. No wear was discernable. | ||