Hey Markus, is there any kind of element behind that? Do you have the measurements of the Tecumseh housings, diameter and length? Thanks, Nate
the rock guards are just open behind them, spaced out a bit so the air can draw in. Tec air cleaners typical for mini bikes were 2 3/4-3" long overall and about the same overall width wise in both the round and oval styles. They look a bit large on a WB the ovals not so bad and have a vintage look, but they do pull air from the front,
I dunno how good a paper element would be in the application, it will probably saturate the element quickly, thats why the period correct ones are stone or metal weave a lot of times on those, things of the past that got replaced with the foam style (oval tec air cleaners do use foam).
you could cut an oval cleaner down, if its like the one I have and the cover is dimpled in then it just has holes drilled in the body for them to sit in to hold it. So you could knock it down a bit drill the holes for the detents and cut the open cell foam element shorter (note my ruler measures a 1/4" short!)
If you are handy you could make the metal weave element type if you can come up with the base and hat maybe off something else. some perforated metal (like your pull start air intake screen) on the inside and then tightly wrap the element around it. I found the metal weave filter material at the hardware store, it was an air filter for a window shaker a/c unit I use it for my Briggs velocity stacks:
Maybe a little hot rod air cleaner could be used for the bases :shrug: and come up with something like the one on my WB700: