PSA: Check your air filters people!

go to a motorcycle shop and get the spray-oil for motorcross bikes' foam filters. works 10 times better than k&n stuff but you have to apply it very lightly as it was made tackier for foam.
 
go to a motorcycle shop and get the spray-oil for motorcross bikes' foam filters. works 10 times better than k&n stuff but you have to apply it very lightly as it was made tackier for foam.

Typical Foam Air Filter

Lack of surface area hinders air flow and dirt holding capacity. Open cell foam usually saturated with oil.
Dirt builds on outside and blocks the openings.
Higher vacuum pressures distort the cells drawing dirt deeper into the filter.
Airflow is reduced as cells become blocked.
Turbulent filtered air.

afffig4.gif




K&N

airflow.jpg
 
Back in my RX7 days people were running richer with the foam filters than with the K&N.

Of course that meant that the guys with K&N filters were popping their engines more without the right mods and tune.

I guess the foam filter was that restrictive to save the RX7 guys a trip to the shop.....
 
Thanks for the reminder. Changed oil, filter and cleaned air filter + lightly oiled after changing the oil in my Triumph Daytona 675.
 
i clean mine once a year, but i keep on forgetting where i put that damn filter cleaner kit!! I would look for it mid year to make sure I have just to lose it again when I needed it.
 
Boy this is so true to check them every 3-4 months. Check mine out after about 14 weeks:eek: I use the Uni Foam Filter Oil after cleaning and can be purchased at most Cycle Shops for about $6.95 for a 5.5 oz can.
 
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Typical Foam Air Filter

Lack of surface area hinders air flow and dirt holding capacity. Open cell foam usually saturated with oil.
Dirt builds on outside and blocks the openings.
Higher vacuum pressures distort the cells drawing dirt deeper into the filter.
Airflow is reduced as cells become blocked.
Turbulent filtered air.

afffig4.gif




K&N

airflow.jpg



notice i said to get the spray for foam filters and to use it on the k&n, not to replace the k&n with foam filter. you strike again batman.
the k&n oil is really the right stuff for fabric filters BUT it is a very light oil and it gets pulled off the fabric allowing dirt to enter the airbox, meaning that you have to service your filter ALL THE TIME which we usually do not (i do mine monthly). the tackier spray-on oil for foam filters is made to saturate the foam, obviously, but if you use it lightly on the fabric filter it will not hinder the airflow yet last much longer than the k&n oil.
 
notice i said to get the spray for foam filters and to use it on the k&n, not to replace the k&n with foam filter. you strike again batman.
the k&n oil is really the right stuff for fabric filters BUT it is a very light oil and it gets pulled off the fabric allowing dirt to enter the airbox, meaning that you have to service your filter ALL THE TIME which we usually do not (i do mine monthly). the tackier spray-on oil for foam filters is made to saturate the foam, obviously, but if you use it lightly on the fabric filter it will not hinder the airflow yet last much longer than the k&n oil.


Did I say something about the foam replacing the K&N filter?
 
if thats not the case, then i find post #27 very confusing as connected to the quote, thats all..
 
On that note of air filters - where are the ones for the A/C and cabin if I want to replace/clean those?
 
On that note of air filters - where are the ones for the A/C and cabin if I want to replace/clean those?

The filter for the cabin is at the base of the windshield underneath the trim that covers the wiper motors... there is an aftermarket part that has a HEPA filter that I'm thinking about getting. Especially when there are fires in SoCal... eww .....

I'm also considering switching back to the OEM filter from the UNI filter.
 
The filter for the cabin is at the base of the windshield underneath the trim that covers the wiper motors... there is an aftermarket part that has a HEPA filter that I'm thinking about getting. Especially when there are fires in SoCal... eww .....

Where does one by the aftermarket cabin HEPA filter?
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Thanks!
Expensive, but prob worth it.
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Thanks!
Expensive, but prob worth it.
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yea im sure it is worth it .. cuts down on the dust in the cabin... its on the list!
 
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