I'm building a Banvill 197 with a 9e engine that ran fine 20 years ago, currently waiting for bottom end to return from alloy welding. But looking at the top end & comparing it to photo's of the Greeves it was previously fitted in I'm concerned about the length of the carb inlet, it's 3 inch long plus a 3/8" fibre spacer see photo. with the air filter I've bought I don't think it will all fit in the frame loop. I have no problem shortening the inlet but just wondered if anyone had seen one as long as this as previously I had Villier's carbs on other engines.

It used to be a popular mod to lengthen the inlet tract to improve low end performance. Actually it's of little value and you won't notice the difference with a much shorter one. Most people now have the carb bolted virtually direct to the barrel

Brilliant thanks.