Land-Rover Series One Carburettor
From the beginning the Land-Rover standard fitment on their Series One petrol engines was always the Solex 32 PBI-2 carburettor. That is confirmed on all technical publications such as "Parts Catalogue" (TP111 and TP155) and "Workshop Manual" (PN4291) where we see that Land-Rover also gave their own part numbers to the Solex parts. During the production period of this vehicle (1948 to 1958), 3 types were used according with the engine changes. From 1948 to 1950 with the 1,6 litre engine was the Solex 1513 specification (Land-Rover part number 231275), then from 1951 to 1954 the 2,0 litre siamese bore engine used the 1560 specification (237773) and finally from 1955 to 1958 with the 2,0 litre spread bore engine the 1741 specification (264664) was fitted.
Basically, the carburettors are identical, as their differences only concern the settings of the Choke tube, some jets (Main, Correction, Pilot, Pump and Economy) and the Non-return valve.
So, at first sight and for most of us, they all look the same, but the truth is they perform different and we must take care of that when we want our Land-Rover to run properly, fitting the correct carburettor to the engine we have.
The carburettor can split in 5 parts, each one with it's own function. That's what we are going to see below...
This little master piece of art and engineering is the heart of the carburettor. It's the only part that changes with specification, as we can see on the picture.
This is the bottom of the carburettor that fits on the engine inlet manifold letting the desired mixture of air and petrol be injected to the engine. This part is the one which transmits the command received from the accelerator pedal or the hand throttle control.
This is the top of the carburettor. It is here where either the air and petrol enter the carburettor and go inside the body.
This complexe part pumps the petrol inside the carburettor according with the command got from the rod of the Throttle chamber.
This part manages the level of air on mixture, and as the name shows, is often used on engine start, as it is commanded by the "Cold Start" control.