Reply To: Ex Air ministry Alcon Pumps

[andyfrost]

David , the groove you refer to was an idea/design that JAP toyed with for a short period , it was also used on 4/3 , 5 models , but was quickly dropped. So in it’s original format that engine would have been fitted with a carb with the JAP logo cast into the fuel bowl , it was a very similar looking carb to the Zenith13. Traces of yellow paint on the carb in one of your pics tells us quite clearly that it is a mixture of old/new bits and pieces.

Andy