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Homepage. This page: Original 1920s/1930s instruction book published by Solex Limited, Marylebone Road, London.
Vintage & classic car reference section

The Solex Thermostarter carburettor.

Cover of the Solex carburettor publication
The Thermostarter was Solex' idea of a carburettor whereby the usual task of managing enrichment from a cold start, was managed automatically by the carburettor rather than the driver. In principle it sounds like a good idea, an early interpretation of the automatic choke that would be standard fitment on cars in years to come. A bi-metallic strip, incorporated within a thermostat permanently attached to the car's exhaust or manifold, controlled the enrichment procedure. Diagrams and text visible in the scans of the booklet explain how it works, and how it would be installed. A leaflet promoting the benefits of the Solex Thermostarter, may also be found at OCC on this page.
(As an aside, this leaflet used to live at Welland's Garage, which is the establishment shown at the head of this page).
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The Thermostarter Solex Carburettor.

  • Published by Solex Limited.
  • Date: 1920s/1930s.
Diagram of the Thermostarter carburettor

(Page 1. Introduction to the carburettor.)
Introduction to the carburettor
(Page 2 & 3. Key components & diagram)
Components in the Solex carb
(Page 4 & 5. The Thermostatic Box)
The thermostat described
(Page 6 & 7. Exploded diagram of the Thermostatic Box)
Thermostat diagram
(Page 8 & 9. The starter in operation)
The thermostarter in use
(Page 10 & 11. Fitting and adjustment)
Fitment and adjustment

Please note.

Information presented in this section is provided as an aid to classic and vintage car owners only. It shouldn't necessarily be taken as gospel, more of a useful series of pointers. It may be that since these period instructions were created, better ways have since evolved to tackle work on the components being considered. Tips and advice may be given in these period articles, but inclusion doesn't necessarily suggest that anyone involved with OCC endorses the methods portrayed. A certain level of mechanical know-how will be required in undertaking work as described in these pages, and anyone unsure of their own abilities is advised to seek further assistance. Delve into your car's inner workings only if you feel confident in your own abilities, after all - a little knowledge can be dangerous, as the old saying goes.
No-one at OCC can be held responsible for breakages and injuries that might occur, while working on a vehicle following a read of pages hosted on the site. Dabble at your own risk. Where possible, the source(s) for the data shown will be given. If the accreditations are incorrect, or contravene your copyright, please let me know.
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