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).
Wear in engine bores and pistons for a Chevrolet vehicle.
| Identifier | ExFiles\Box 103\2\ scan0019 | |
| Date | 1st April 1939 | |
| REPORT RE WEAR IN BORES & PISTONS. ===================== Fitter: Haggar Chassis No.: Chevrolet (F.A) Date: 1. 4. 1939 Job No.: Mileage: 23,915 BORE TABLE: BORE | NOMINAL | TAPER | OVAL | M | C | T 1 | 3.3125" | +.004" | .0015" | 2 / 4 2 | " | +.005" | .0005" | 1 1/2 5 3 | " | +.008" | .0025" | 2 1/2 8 4 | " | +.006" | .001" | 3 6 5 | " | +.005" | .001" | 2 5 6 | " | +.0055" | .0025" | 1 1/2 5 1/2 SMALL ENDS:- REMARKS:- PISTONS TABLE: PISTONS | TYPE | TOP | BOTTOM. 2 | Cast iron pistons | | Signature: J.B. | ||