Small
H.P. Technical Articles 1952 thru 2001 (listed here) inquire if one you need
hasn't been scanned Small
H.P. Technical Articles 1952 thru 2001 (listed here) inquire if one you need
hasn't been scanned
(Note the "SCAN" header for "YES" or not).
Click Here For SHP Technical Articles 1952 - 2001 that have been scanned
Click Here For SHP Technical Articles 2002 and newer. (all pertinent have been scanned)
| Issue | Page(s) | Subject | Scan | Notes |
| 52-3 | 45 | 20 HP Starting Carb. Maintenance | Yes | about manifold jet/modifications |
| 53-5 | 108 - 110 | 20 HP article including Tools (Tools19xx files) | Yes | including tool list/pictures |
| 54-2 | 135 | Wheel and Inner Tube Facts | Yes | charts/diagrams |
| 54-5 | 159 | 20 HP Battery Ignition Timing | Yes | |
| 56-1 | 223 | Balancing Rolls-Royce Wheels (three weight type) | Yes | on the car |
| 57-3 | 286 | The 20 HP in Theory and Practice - article | 4 speed shown | |
| 57-4 | 296-297 | Acid Cleaning Blocks and Heads - non alloy | Hydrochloric - see also 310 and 904 | |
| 57-4 | 297 | 20 HP instruments (early) | ||
| 57-5 | 303 | Chrome Plating Radiator | ||
| 57-6 | 310 - 311 | Copper Tube replacement in Heads and Blocks | Yes | Tool Drawings/ procedures |
| 59-1 | 373 | Valve Seating | ||
| 61-1 | 488 - 491 | Automotive Industries Article - 20 HP - 10/26/1922 | ||
| 61-1 | 494 | Head Torquing Sequence | Yes | PII, but applies |
| 61-2 | 500 | Autocar Road Tests - 20 HP - 03/8/1929 | ||
| 61-3 | 520 - 521 | Parts Diagrams and facts | Nuts, bolts, washers, pins, etc. | |
| 62-3 | 593 | Axle Ratios, Tire Sizes, Shaft RPM vs Road Speed | Yes | 20 HP thru Silver Wraith |
| 63-6 | 699 | Spark Plug Tuning | ||
| 64-1 | 715 | 20 HP Servo Notes (see also 1198 and 1212) | Yes | See also 328, 336 on PII |
| 64-3 | 738 | Shock Absorbers (20/25) | ||
| 65-2 | 799 | 20 HP Steering Geometry (early) | ||
| 65-2 | 800 - 801 | Rod Bearings - detailed instructions | Important | |
| 65-4 | 822 | Clutch Adjustments | Yes | Diagramed |
| 65-5 | 836 | Generator Refurbish | Yes | |
| 66-4 | 900 | Starter Drive Clutch | Yes | Including Manual Diagram |
| 66-4 | 904 | Acid Cleaning Heads and Blocks - non alloy | Phosphoric - see also 296 | |
| 66-6 | 927 | Ring and Pinion Backlash - PI | ||
| 67-1 | 934 | Fasal's 20 HP Restoration | ||
| 68-2 | 1051 | Pre War Steering Adjustment | Yes | |
| 68-3 | 1068 | Ballast Resistors | Yes | |
| 69-2 | 1148 - 1149 | Chassis Stands for Rotation Work | ||
| 69-2 | 1152 | Auto Vac Restrictor Valve Maintenance | Yes | |
| 69-4 | 1177 | Blinker Diagram | Modern Add On | |
| 69-5 | 1198 - 1199 | Servo Systems - Working Description - Diagrams | Yes | see also 715 |
| 69-6 | 1212 | Servo Adjust and Overhaul (20/25) | see also 715 | |
| 70-1 | 1232 | Hub Removal Tool | ||
| 70-2 | 1246 | Hub Removal Tool | ||
| 70-4 | 1276 | Brake Cable Details | Yes | |
| 70-4 | 1276 | Starting Carb Procedure | Yes | Close the butterfly to start |
| 71-2 | 1340 | Small HP Water Pump Shaft | Diagramed | |
| 71-2 | 1341 | British Screw Thread Charts | see also 1439 | |
| 71-2 | 1342 | Switch Box Info | ||
| 71-2 | 1344 | 20 HP Tools | Listed | |
| 71-3 | 1352 | Voltage Regulator Facts | ||
| 72-2 | 1435 | Spring Shackle Pins (20/25) | Diagramed | |
| 72-2 | 1439 | British Screw Threads (update) | see also 1341 | |
| 72-5 | 1489 | Cylinder Block Cleaning | Info on tubes | |
| 72-5 | 1494 | 25-30 Engine Overhaul | Yes | 1514, and 1532 |
| 73-2 | 1549 | Steering Tube (seizure) Separation Procedure | oil pressure method | |
| 74-2 | 1641 | Gasket Set Parts #'s - ordering | ||
| 74-3 | 1666 | Arrangement of Pistons "Gosehawk" | ||
| 74-5 | 1698 | 20 HP Chassis Drawing and Body Design | ||
| 75-1 | 1740 - 1744 | Rebuilding the 20 HP Engine (Part I ) | Yes | |
| 75-2 | 1756 - 1760 | Rebuilding the 20 HP Engine (Part II ) | Yes | |
| 75-3 | 1776 - 1783 | Rebuilding the 20 HP Engine (Part III ) | Yes | |
| 75-4 | 1796 - 1807 | Rebuilding the 20 HP Engine (Part IV ) | Yes | |
| 75-5 | 1821 | Full Flow Oil Filter on a 20 HP | ||
| 76-1 | 1850 | Particulars of Cylinder Heads | Yes | 20 HP, 20/25, and 25/30 scanned |
| 76-5 | 1914 | Fitting New Flywheel Gear Ring | ||
| 77-2 | 1960 - 1961 | Errata on 20 HP Rebuild articles | Yes | See pp.1740 |
| 77-5 | 2014 - 2015 | Magneto Servicing | Yes | |
| 77-6 | 2021 | Battery Cables and other Fittings | Yes | |
| 78-3 | 2076 | Radiator Dent Removal | ||
| 78-5 | 2103 | Flying Lady Mascot Dimensions | Yes | Chart of all Models |
| 78-5 | 2110 | Rewire to use Stop Lights | ||
| 79-3 | 2174 | Overdrive for Pre War Cars | Supplier listed | |
| 80-3 | 2270 | Fuses (Wire Sizes) | ||
| 80-4 | 2284 | Lucas Headlamp Hinge Pins | ||
| 81-2 | 2380 | Piston Refurbish | Yes | |
| 81-5 | 2440 | Restoration of Headlamp | ||
| 82-4 | 2578 | Painting Chassis | ||
| 83-2 | 2690 - 2691 | Lamp Recognition Chart & Replacements | Yes | |
| 83-6 | 2812 | Metal Fabrication Ad | ||
| 84-3 | 2876 - 2881 | Re-Wiring and Sources | Yes | |
| 84-4 | 2906 | RROC Ephemera Reprints List | Yes | MS Word File |
| 85-1 | 2980 | RREC Brake Systems Book Review | ||
| 85-4 | 3051 - 3054 | Springs - Semi Elliptic Renewing | Yes | |
| 86-2 | 3142 | Water Pump Woes | Yes | |
| 86-3 | 3159 | Carburetor Low Speed Jet | Yes | |
| 86-4 | 3192 | Wiring Material Source | ||
| 86-6 | 3279 | Small HP Block Freeze Damage | ||
| 86-6 | 3283 - 3284 | Fuses/Wiring & US/British Chart | Yes | |
| 87-3 | 3411 | Carburetor High Speed Jet | ||
| 87-5 | 3496 | Enots for 20 HP Gaiters | Yes | |
| 88-2 | 3619 | Petrol Tank Fabrication for 20 HP | ||
| 88-3 | 3666 | Magneto Mumbo Jumbo | ||
| 88-4 | 3731 | Wheel Restoration Parts | ||
| 89-2 | 3880 | Magnetos - Cont'd | ||
| 89-3 | 3928 | Engine Balance of 20 HP | ||
| 89-5 | 4015 | Intake Manifold Leak Detection - 20 HP | ||
| 90-2 | 4112 | Lucas Lamps | ||
| 92-1 | 4430 | Lucas Lamp Dipping | ||
| 92-5 | 4537 | Wheel Weights | ||
| 94-1 | 4765 | Overdrive on a 1925 20 HP | ||
| 94-2 | 4800 | Water Bypass on a 20 HP | ||
| 94-3 | 4823 | Replica Body and Wings | ||
| 96-2 | 5161 | Pre War Models by Quantity | Yes | |
| 96-4 | 5216 | Plating at Home | ||
| 96-5 | 5242 | Wings- Fabrication, Welding in Aluminum | ||
| 97-1 | 5317 | Bakelite Repair | Yes | |
| 97-3 | 5366 | Cowl Running Lights (a picture) | ||
| 97-3 | 5379 | Exhaust Manifold Repair Process & Products | Yes | |
| 97-4 | 5395 | A 20 HP Pictured | ||
| 97-4 | 5405 - 5407 | Small HP Tech Seminar | Yes | |
| 98-5 | 5621 - 5626 | Electrics - Pre War & Sources | Yes | |
| 98-6 | 5660 | A 20 HP Dash Picture | ||
| 99-1 | 5711 - 5714 | Brake Information | Yes | |
| 99-2 | 5745 - 5746 | Jubilee Clamps & Size Chart | Yes | |
| 99-3 | 5780 - 5785 | Small HP Tranny Rebuild (Part I) | Yes | |
| 99-4 | 5823 - 5829 | Small HP Tranny Rebuild (Part II) | Yes | |
| 99-6 | 5875 | Valve Spring Tool Use | Yes | |
| 00-1 | 5934 - 5939 | Small HP Servo | Yes | |
| 00-1 | 5939 - 5940 | Pinion Seal for Differentials | Yes | |
| 00-2 | 5978 | Key Types | ||
| 00-4 | 6042 | James Young Coachwork | ||
| 00-4 | 6050 | Removal of 20/25 Wheel Bearing Parts | ||
| 00-5 | 6094 | Key Type Errata | ||
| 00-6 | 6135 - 6140 | Vibration Damper | Yes | |
| 01 . 1 | 6170 | Pre War Decoke Seminar | ||
| 01 . 4 | 6326 - 6327 | Rolls - Royce Nuts and Bolts | Yes | |
| 01 . 5 | 6378 - 6379 | Voltage Regulators, Generators, and Batteries | Yes |
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