Which air filter for a Predator 420cc engine

[Helipackmech]

For those of you running the Predator 420cc engine, what air filter are you running? I have the stock square foam one right now. I want to buy a few spare filters so I can change them out as I'm sawing. I was thinking of getting some paper filters but then I see you can convert over to a round stock style. Or should I just stick with the oiled foam style? I don't think I really want to switch over to a k&n style. I did a search but didn't come up with anything.
This is a hobby mill and not a production mill.
Thanks in advance!

[Coltbodi]

I don't know anything about these engines, but I do know that oiled foam filters are great for keeping out dust. That's the type of filters you run a dirtbike that is always running in the dust. The filter should last a while, especially on a hobby mill. So you shouldn't need to change it very often. I tried to look up the filter for those motors to get and idea of what you have and all I could pull up a performance upgrade filter which was a paper filter. If it was me I think I would keep the oiled foam just because they work so well with dust.

[bandmiller2]

HPM, your not cutting commercially and oil damp foam is efficient why mess with success. If you can find several foam filters keep some clean and replace often. I don't think the difference in engine longevity due to air cleaners will amount to a row of peas. After break in I would use synthetic oil and add a small amount of two cycle mix to the gas as air cooled engines run hot and dry in the head. Frank C.

[Helipackmech]

Thanks for your advise guys1 This is kind of what I was thinking as well. I tend to over think things  sometimes though! 

[Coltbodi]

Does it have a pre-filter around it? Those are very cheap and extend the life of of your filter

[Helipackmech]

No, right now it has just a square piece of foam 4 7/8" x 5 1/4" x 7/8"