Originally posted by Rookie Solara
From what I know...there is a K&N filter, that is servicalbe, that one you can be re-oil, wash and redo it whatever the way you like....MAKE SURE you get the BLACK RUBBER (RU3230) head air filter.....not the CROMN head filter......that CROMN headed one (62-1340 that a lot of LHS and ebay are selling for RC used air filter) is NOT an air filter...it looks better, but that is a CRANKCAST VENTILATION flter for the real car or motor cycle....
About the foam air filter that most RC ppl use.........again, (FOR ME) I will use it for 2 weekend of racing....3 qualifiers and 1 main for 15 or 30 minutes, x2 week...............$7 for 2 filters, that is like $7 for a full month of weekend racing..........I don't see anyone will tell me that is a WASTE or cannot afford that.....even for a $100 made in taiwan engine, I would still keep that 2 weekend racing 1 air filter schedule....not to mention, a lot of ppl have no problem to spend $200 plus on a 3 port engine, but I cannot believe those ppl will have problem to spend $3.5 for a new air filter....
The concept behind the foam filter and oil is it will trap all the dirt / dust into the filter and still let the air flow thru so the carb still be able to suck in clean air without sucking in the dust/dirt........when you are washing it, espeiclaly when you are squeezing and rubbing the foam, you are pushing all the dirt toward the center (inside) of the filter....and you THINK you can pushing them out of the filter...except, you cannot garantee that is always true. Then you put the filter back in the carb, the dirt, might be just hanging at the edge at the center of the fitler, and once the engine started, it will all get sucked in into the carb....
About ppl saying their filter is reuse and never have problem....I BELIEVE that.....but for myself, I would not save my $3.50 and take my chance on my $200 plus motor........when someone said he will use up to 2 filter for 1 day of racing....it is totally personal prefrence........some ppl use a new set of foam tires for each qualifier......there is nothing wrong with it.
If you still don't know what to do with the filter, ask LHS, then local track ppl..........and gather all the information, and make your own decision.....
Again, $3.50 for 2 Sunday racing with worrying and cleanign or whatever.........can you afford that?
so when you race the filter in the second weekend, what maintenance do you perform on in?