electrokid wrote:I was chatting with Andy (Andy's Autos, Woking - ex Citroen, likes the BX, and always does a v. good job on mine) - Solex and Weber were fitted at various times on various models. Sometimes when a car was being supplied to a good regular customer and it turned up with a Solex they would swap it for a Weber at the dealership - not straightforward though - it's a change of manifold to accomodate the new carb.
I you're thinking of making an adapter section to fit a Weber make sure there is a reasonable length of inlet between the carb and the manifold and it's in a reasonably warm place to aid vapourisation. Also make sure that all the coolant system is completely clear of crud - the auto choke is driven by the coolant temperature. Replace the anti-stall diaphragm because the slightest leak will interfere with calibration. Adjust, or get your local garage to adjust the mixture to within a gnat's b*****k of maximum CO at tickover and you'll get excellent MPG without sacrificing performance.
Hope that helps.
Bugger!
I have a weber carb ready to go on my blue 16TRS, no manifold though it came of a 86D 16TRS auto.
I think the main difference is the number of bolts holding the carb onto the manifold - a short adapter tube should do the job but I've no idea how easily that will fit in - I've only ever found diesel engines under BX bonnets so I just don't have the experience to suggest anything.
The carb will still work well even with a short tube and you'll get 'normal' mpg. The longer tube was fitted as standard to some cars and was a feature of some of the 'high mpg' carbs
