Rolls-Royce Archives
         « Prev  Box Series  Next »        

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).
Comparison of engine valve timings and durations for various vehicle models including Cadillac, La Salle, Standard, and Bentley.

Identifier  ExFiles\Box 173\3\  img213
Date  31th January 1934
  
Top Left Corner: LB-NO. IN:

Main Table:
DURATION.
INLET | EX:
204 | 206 | CADILLAC V.12
197 | 196 | CADILLAC V.16
210 | 210 | LA{L. A. Archer} SALLE LINE 8.
213 | 230 | STANDARD 20/25
234 | 238 | BENTLEY 3 1/2 LITRE

TIMINGS .020 TAPPET CLEARANCE.
Ex: O | Ex: C | In: O | In: C
25° B | 1° A | 15° A | 39° A
23° B | 6° B | 15 A | 31 A
30° B | T.D.C | 11 A | 41° A
44 B | 6° A | T.D.C | 40.5 A
47 B | 11 A | 1 B | 52.5 A

Vertical Text at Bottom (Legend for graph plots):
ENGINE
MOD. & SERIAL NO.
TEST DATE
POWER & ECONOMY
OBJ. CORR. B.M.E.P. CURVES
CADILLAC 452 CU: IN: V-16
DUPLEX DOWNDRAFT
CARBURETTERS - 6.49 C.R.
CADILLAC 368 CU: IN: V-12
STD: UPDRAFT
CARBURETTERS - 5.59 C.R.
*G.M.C. CORRECTION 60° F
LA{L. A. Archer} SALLE 8 CYL.
240 CU: INS: 8 CYL.
DUPLEX CARB.
LATEST S.U. CARB
20/25 S & C/R 222 CU: INS:
S.U. CARB
BENTLEY 6-4
C/R DUPLEX CARBS
222 CU: INS:

Axis Labels:
Y-Axis Left: H.P.
Y-Axis Right: LB./HP-HR. (FUEL .100), PER CENT (x10)
X-Axis Bottom: R.P.M. (+100)

Bottom Left Corner: 1-31-34 Moyer

Bottom Right Corner: SHEET OR PAGE NO., REPORT NO.
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙