Hi
I think that, if not driven in extremely dusty conditions, the increased engine wear caused by breathing unfiltered air is not that great. This considering the average low mileage. Most of us doesn’t use our old motorcycles everyday. But in my opinion a flame trap is essential. I have, personally, seen two, beautifully restored, bikes burn to cinders because of carburettor blowback!
I got one of those Amal “filers”, without the insert, for free. I intend to fit some gauze to that, if no better alternative comes up in the mean time.
If there is no thread on the carburettor maybe one could fit one of those modern conical or cylindrical air cleaners with rubber backside and hose clip. They come in a surprisingly variety of sizes. Might look a bit out of place, but they are mostly not that eye catching.
Best regards
Leif
