Lifespan of refurbished Austin 7 engine

[Bob Culver]

It always surprises that efforts were not made to fit air cleaners early on in motoring history. In 1929 NZ had very high car ownership, after only USA and Hawii, but only 3 % of roads were sealed. Near all cars had open updraught carbs.

When driving through short dust clouds I coast as this reduces the draw through the cleaner. Some argue that oil wetted gauze just spreads the ingestion. On my Seven with the export "filter" far more dirt accumaulted on the front. Some sort of shield  would seem helpful.