Solex 35

André

I have the following kit which I purchased “in case”  many years ago when I had my Légère”. It is now surplus to requirement.

It appears to be complete and definitely has a new needle valve for the float chamber.

I would accept £20 for it.

t

If you are interested in both this and the window mechanism, per other correspondence, I could send them together.

B……

André

Unfortunately, information for this particular carb is not amongst the documents available on the Forum archive.

However, I did find the following on the interweb ….

Solex fai manual –  The Solex FAI is a classic self-starting downdraught carburetor, commonly found on vintage vehicles like classic Rovers and early Peugeots. It relies on a unique bi-starter (choke) mechanism and precise idle jet circuits to meter fuel.

Specific information for the FAI model is detailed in its dedicated Solex FAI Parts & Operators Manual. General operation, tuning, and servicing procedures span several specific areas:

1. The Starting Device (Choke)The FAI has a self-starting mechanism rather than a traditional air-valve choke.Operation: Pulling the starter cable opens a secondary air/fuel passage and bypasses the main throttle.Important: When operating this device during a cold start, the throttle butterfly must remain fully closed. Pumping the gas pedal will cause the engine to stall.

2. Tuning and AdjustmentsIdle Mixture: If the engine surges or stumbles and drips fuel when the throttle is opened, the mixture is too rich.Float Levels: The fuel level inside the chamber is factory-fixed. If you change to higher fuel pump pressures, a smaller needle valve or different thickness washers under the needle valve may be required to compensate.Jets: Standard tuning requires verifying that the correct air and fuel jets are installed for your specific engine size.

3. Maintenance

the ‘float height’ is regulated by the thickness of the washer under the needle valve.

According to items 2 and 3 above, as long as no big change has been made to fuel pump pressure, the combination of washer and valve in a service kit should therefore give the correct shut-off height.

I had fitted an electric pump on thd Légère, mainly for priming purposes.  When running it did not flood the carb, so  I think the fuel pressure is therefore not quite so critical and you are less likely to require a different needle valve height.

B…..

I suggest start by adjusting the mixture which is a slotted & knurled headed screw, which runs through a compression coil spring.  It looks similar to the throttle adjustment screw but goes direct into the carb body.

Screwing it in weakens the mixture, and a quarter turn can make a big diffence.

I think I may have one.

I’m currently enjoying the delights of the 50th Anniversary Dorset Rally but shall check when I get home at the weekend.

B….

…. and, although it is not the route I would choose were I in your shoes, I have a 32PBIC inlet manifold I could sell.

You will have to assemble it to your current exhaust section with a new hotspot gasket and then have the port faces machined to ensure all are flat and parallel.  This will ensure a good seal at all ports, and importantly, eliminate the risk of breaking the manifold flanges if they are any height differences between the two sections.

B….