Posts
164
Joined
6/14/2014
Location
Northville, MI
US
Edited Date/Time
6/28/2022 9:37am
I put In a new twin air filter with maxima oil before I ran my last practice Thursday, and I was surprised to see the filter barely got dirty. Im OCD about oiling my filters and extremely OCD about removing and changing them because I don't want dirt in the intake. I'm wondering if I need to change it, or if I could run it again... 2022 YZ250F. I would assume that if anything it might slightly decrease performance but I don't see how using a barely dirty air filter could allow dirt to pass. If anything it seems more restrictive
Also, does anyone have any recommendations for bike cleaner? Not simple green I dont want to fade the aluminum, but just pressure washer doesn't clean enough. I have a lot of shout but i don't know if that will remove greasy chain fling dirt and WD40
Also, does anyone have any recommendations for bike cleaner? Not simple green I dont want to fade the aluminum, but just pressure washer doesn't clean enough. I have a lot of shout but i don't know if that will remove greasy chain fling dirt and WD40
The Shop
If the air filter is barely dirty, ill run it again. However on the stock filters on the YZ (sliced bread), I changed that shit every time. With the other intake kits like the twinair, ill run it a little longer with a filter skin. Filter skin gets dirty, take everything off, wash the filter, toss the skin. New filter and skin. Change the filters with the bike on its side with the triple clamp resting on a stand.
(Who dislikes anything? lmfao fucking wierdos)
But as for a dirty filter being more restrictive, no, fiber auto filters do that but oiled foam filters do not . They never get more restrictive they just get worse at catching the dust. Imagine a million tiny twisting tunnels with oiled walls, the dust hits the wall and sticks. If the walls are completely coated the dust will bounce off them and keeps flying through the tunnel.
I run them in all my bikes.
My airfilter / airbox is a top mount type ( a bit like Dakar bikes), with a large plenum chamber beneath the filter, and the filter takes quite a while to get remotely, noticeably dirty. The use of filter skins is a very effective way to keep things clean. Even in dusty environments, I'll get through 3 filter skins (1 only over the AF) before I get 'guilty' about cleaning the filter.
As others have said, the main reason I'll clean and re-oil my filter is concern about oil migration, but even then I've yet to find the Filter 'dry'. As my airfilter is horizontal, it doesn't dry / get oily at any particular area :
Once I retire my batch of Unifilters, I'll be using Funnel Webs - with those and Filter Skins, I think I'll get multiple rides without changing filters, but, 'guilt' will always get me to do a filter change.
One thing I do worry about how much dirt falls down inside the air boot when removing the air filter. The more you pull the filter the more odds that dirt has fallen in.
For bike cleaner, I use Meguiars auto cleaner (the purple stuff). Cheap at Walmart. For really dirty parts and tires, I use Honda-Brite/S100 -- it's the same stuff. No problem with corroding metal, harming plastic, etc. Just be sure to follow directions and rinse it off fully. I also don't wash my bike in bright sun -- the water will dry and leave deposits on the metal.
Running a kinda dirty air filter is neither so, Not OCD😂😂😂
I don’t measure my filters by rides or hours… change it when it dirty was my point.
To answer your question run your air filter and I use the purple cleaner for all my bikes as well. 🤙🏻🤙🏻🤙🏻 And have a great Friday and hope you are going to ride this weekend
Pit Row
Use the green No-Toil if you have the choice....i think it does less damage to the filter glue.
To clean....use Cycle Wash available from Motosport for $20/ gallon. Already mixed and i can make this stuff last forever since i only give the bike a quick overall spray. More advice.....after riding....spray the bike down with WD-40. it will not hurt any of the materials on the bike and will cut into some of the stuck dirt/ grease for the power wash.
For cleaning, I use the following:
1) Citra-solv (orange based cleaner like goo gone) on chain and sprockets.
2) Simple Green (full strength) on tires, underside of fenders, and chain/sprockets
3) Simple Green (cut 50/50 with water after step 2) everywhere else
4) switch from pressure washer to hose and give bike a thorough rinse with plain car wash soap (not wash and wax) to neutralize any Simple green and rinse everything clean.
5) blow water out of everywhere with an air nozzle/dry with microfiber.
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