Useful Sources: Services, Parts, and Advice
Listed below are parts suppliers, maintenance and restoration services, technical forums, and documents that may be of general interest to the caretaker of a small horsepower Rolls-Royce. If you wish to correct or add something to this pare, please contact us.
Topic specific materials will be found under the relevant category listed on the Resource page.
Sources for Technical Information
RREC Pre-war Technical Forum
In addition to posting technical queries in this section of the forum, members' attention is drawn to the many useful documents that are available for download free of charge at the bottom of the forum (direct access to documents: https://forum.rrec.org.uk/viewforum.php?f=28).
The Sir Henry Royce Foundation - Technical Library
This is the Technical Information Access Point for the The Sir Henry Royce Foundation - the archival resource and repository for all Rolls-Royce and Bentley heritage material in Australia. It includes a Technical Library proudly provided for all Rolls-Royce and Bentley enthusiasts by the Rolls-Royce Owners Club of Australia and kindly hosted by Richard Treacy.
RREC 20HP Register: Resources and Articles
The definitive source for 20HP manuals & parts lists, newsletter index by part or function,technical information, technical tips, photographs, etc. Pay particular attention to the section titled “ Members Technical Tips for the Rolls Royce 20hp.”
Documents, Studies, Tech Sessions, Videos, and the Like
Rolls-Royce and Bentley Motor Cars - Chassis Numbers Booklet
Rolls-Royce Club of Australia. This booklet provides information on chassis numbers, year of manufacture and specification changes during the production of Rolls-Royce motor cars until the end of the Silver Shadow II series cars and derivatives, and of Bentley motor cars from 1933 until the end of the Bentley T2 series cars and derivatives.
Rolls-Royce Pre 1940 Chassis Series
This document a list of chassis series and numbers with some information about the series. Unkown source and date.
RROC Judging Manual, Early Small Horsepower, Class 106
This Manual was developed by RROC members knowledgeable in Early Small Horsepower Cars (20 HP & 20/25 HP). Special thanks is extended to Lee P. Haacker, MD for his research and work in developing the technical information contained in this Manual. The purpose of this Manual is to assist you in restoring and preparing your car for Class Judging in the Rolls-Royce Owners' Club. Publication date: 1989
How to Guestimate the Year of Manufacture of a 20hp
Many changes were introduced during the period of manufacture of the 20hp (1922-1929). Some of these can be seen by the outward visual appearance, some by looking into the cabin and some from looking at the engine. This is a guide to guessing the year. Unknown source.
The 20-Ghost Club - Workshop Hints
This is a link to the website with information from a variety of technical workshops. Topics include: cooling systems, brake servo, rewiring, hubs/brakes/wheel bearings, and engine oil.
Technical Articles by RROC Member Gil Fuqua
This is a link to his website with several technical reports he has authored. They have often been published in the Flying Lady. Topics include: engine oil, engineering drawings, lighting, wheel bearings, etc. Individual reports are also included under the relevant category on the Resource page. Used with permission.
Guide to Late Small Horsepower Rolls-Royce Motor Cars, RROC Class 107
The purpose of this treatise is to give owners a basis for evaluating and restoring Late Small Horsepower [25/30 HP & Wraith] motor cars. It may also serve as a starting point for the preparation of the chassis for this type of motor car for judging. For convenience, the various parts of the cars will be considered in the order used on the RROC Class 107 Judging Score Sheet. Lee Hacker, 1995
East Midlands Section Pre-War Small hp Workshops
The East Midlands Section of the RREC periodically holds tech sessions designed to help RREC members gain experience and the confidence to tackle jobs themselves. Attendance is limited, so sign up early. You’ll find notices of the next workshop in the RREC Spirit & Speed newsletter and the East Midlands newsletter. The sessions are held in Derby, UK.
Rolls-Royce Foundation Tech Session, 2026-03-26
A prewar tech session covering many aspects of the motorcars, including changing split-rim tires, Autovacs, valve timing, harmonic balancers, and more.
Timothy Jayne R-R, YouTube Videos, @D-JMI
Working on pre-war Rolls-Royce and Bentley motorcars has been a full time occupation for Tim Jayne since 1988. He has have learned from some incredibly skilled craftsmen, most of whom are now gone. The knowledge and skills have been disappearing at an alarming rate. These helpful and informative videos hopefully assist people in learning about these cars and how to care for them.
A Shameless Plug
Parts, Supplies, Tools, and Equipment
Fiennes Parts, Ltd
Over many years the inventory of new parts has grown to number over seven thousand separate items for pre-war Rolls-Royce and Bentley vehicles. Tamworth, UK
Dennison-Jayne Motors, Inc.
The parts source for Antique Rolls-Royce and Bentley Motorcars. West Chester, Pennsylvania
Accents Unlimited
Accents Unlimted has been supplying high quality leaf spring gaiters (covers) for over 28 years to automobile enthusiasts worldwide. As a captive shop of “Rudy’s”, a former seller of pre-war Rolls Royce and Bentley parts and accessories, it is now independent and can offer spring gaiters made of leather, Everflex (as used on Springfield Rolls-Royce) and metal.
Brillman Company
Cloth wiring.
Restoration Supply Company
Authentic, hard to find restoration supplies and accessories for the antique automobile and marine enthusiast.
Services - UK
Ristes Motor Company
Ristes Motors are specialists in all aspects of Bentley and Rolls-Royce servicing, repair, restoration, and parts.
Genuis of the Lamp
World class leaders in vintage lamp restoration, with their help, advice, expertise and painstaking attention to detail, your lamps are returned to their former glory.
Services - US
The Vintage Garage
At The Vintage Garage, generations of Rolls-Royce, Bentley, Brass-era and classic marques have received a new lease on life. Now under the leadership of Pierce Reid, The Vintage Garage continues this tradition of excellence in service, restoration and support.
Vintage & Auto Rebuilds, Inc.
With extensive facilities located in NE Ohio, the company is fully equipped to handle all aspects of vintage automobile maintenance, care, and restoration.
A list pulled from a long lost case study
This list does not contain live links, but you may find links or an actual document hidden elsewhere on our website.
A-Z British Coachbuilders 1919-1960, by Nick Walker, 2007 Herridge & Sons Ltd., Devon, UK.
Bentley 3 ½ and 4 ¼ Litre 1933-1940 in Detail, by Nick Walker, 2002,Herridge & Sons, Devon, UK
Bentley Driver’s Club Technical Manual XXX
Derby Bentley Authenticity Guide, 2012 Edition, Derby Bentley Society RROC
Early Small Horsepower Judging Rules, 1990, Rolls - Royce Owners’ Club
Faults and Remedies Rolls-Royce and Bentley Cars 1925-1955, by J.B.M. Adams, Adams & Oliver Inc.
Handbook for 25-30 Rolls-Royce Car, Condensed Edition No.XVII, published by Rolls - Royce Ltd.
Judging Guide to Late Small Horsepower Rolls-Royce Motor Cars RROC Class 107, by Lee P. Haacker M.D., 1995 , at one time available through RROC.
Maintenance Notes on the 25/30 made at the Rolls – Royce School of Instruction July, 1937, by chauffeur H. Ray at one time available through RROC.
Opportune Excursion, the manufacturing and social biography of a 1938 Rolls – Royce 25/30 hp. car , Peter Brown, 2012, BradleHouse,Shaftesbury Rd., Gillingham, United Kingdom
Rolls-Royce 20HP, 20/25, 25/30 & Wraith in Detail – 1922-1939, by Nick Walker , 2009 Herridge& Sons Ltd., Devon, United Kingdom
Rolls-Royce Small Horsepower Engines, by R.Haynes and M.A. Grigsby, 1977 – The Rolls-Royce Enthusiast’s Club
Pre-War Rolls-Royce Service Handbook Containing Service Instructions, available from the Rolls-Royce Owners’ Club in the United States.
The Twenty, John Faisal
50 Years with a Rolls – Royce Twenty - A Mechanical Miscellany, David G. Davis, Published by the Sir Henry Royce Foundation, Australia, 2010
Survivor –An Owner Workshop Guide for the 20HP & 20/25 Rolls-Royce, Charles Vyse , Printed in Great Britain.
The Rolls-Royce 20/25 H.P. ,Tom C. Clarke, 3rd Edition 2009,Complete Classics, Coulsdon, Surrey,U.K.
The Rolls-Royce 25/30 h.p. and Wraith, Bernard L.King, 1998, Complete Classics, Coulsdon, Surrey, U.K.
The Rolls-Royce Wraith, by Tom C.Clarke, 1986, Burgess &Sons, Abingdon,Oxfordshire,UK
Useful Accessories, a brochure published by Joseph Lucas Limited, Birmingham, England, Publication No. 300E, October 1937. ( old reprint by RROC )