Crf80 uni filter straight to carb

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7/23/2018 1:15 PM
Edited Date/Time: 7/23/2018 1:15 PM

If you run a uni air filter straight to the carb, not using the air box what do you do with the crankcase breather hose that typically is run into the air box. Should be the same for all xr's and crf's 80-100cc. Thanks for any help

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7/23/2018 2:40 PM

Run it down the frame and by the chain or between the swingarm.

Those bikes will spit oil out if the rings aren’t in great shape, you tip it over, or constantly on the rev limiter which will increase the crankcase pressure and push oil out. If your’s does, that’d be your best bet so it doesn’t fill the airbox. Try to not direct it on the chain otherwise it’ll throw it everywhere on the engine and rear fender.

If it doesn’t, you can improvise a little catch can or bottle to collect the oil and ziptie it on the frame somewhere.

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If you're not mixing gas, you're not haulin ass.