Triumphrat

skromfols

I just checked my Uni filters and found that the side of the filter that gets all the air is almost completely dry (I touch it with my finger and don't get any oil on my finger), but the bottom and inside of the filter (the portion that faces the center of the engine) are still well oiled.

I'm wondering if I need to re-oil the filters now, or just twist them so that the oily part is on the outside. It's only been about 2,000 miles since I cleaned and oiled them, and I haven't ridden in any dusty conditions.

Has anyone else encountered a similar situation, and if so, what did you determine?

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Stan
08 America, Bub slip ons, A/I removed, emissions "stuff" & air box removed, billet intakes, UNI Pods, rejetted, carbs balanced, intminators, Progressive 412's, 1" risers, seat modified by Spencer, TP USA Option 2 Igniter, 813 cams

Aussiematt

Use less oil. The filter should not feel overly oily. I used way too much oil in the past until a knowledeable person showed me the correct amount. An excessively oily filter will rob you of HP

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2004 Thrux, FCR39's, Uni, 813 cams, Works shocks, drilled Ricor valves, Pieman ignitor, green springs, Beringer caliper, preds, damper, brace, Corbin Gunfighter, custom tinware, JMC swingarm, Brembo radial M/C, oil cooler, rearsets, dropped forks

beemerrich

+1 @ aussiematt. Some folks run these dry w/o issue. I only use a light, distant spray to get some highly atomized oil on the very outside. The filters should not have oil on the inner surface.

Regards,

--Rich

mikeinva

I never oil mine put them on right out the bag.I replace them every year .They are cheap enough that it dont hurt to bad to replace them .To much oil will kill there air flow.They come new with very little oil on them.

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Why do I feel young on my bike

skromfols

Thanks for the responses. I'll use less oil next time.

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Stan
08 America, Bub slip ons, A/I removed, emissions "stuff" & air box removed, billet intakes, UNI Pods, rejetted, carbs balanced, intminators, Progressive 412's, 1" risers, seat modified by Spencer, TP USA Option 2 Igniter, 813 cams

BonnieBlack

On the other hand, just trying to keep the interweb in balance

It's friggen amazing how much dirt my oiled filters pick up when I wash them out. I'm glad that's not going into my engine. Of course, I don't know how much of that an un-oiled filter would pick up.

It does sound like your over oiling for sure though. Oil doesn't need to be showing up on the inside of the filter. Sounds like I use more than beemerrich, but I give it a solid outer coating and rub it into the filter a bit and compress/uncompress the foam a few times. The goal in my mind is to coat the inner surface of those voids in the foam (on the outer edges of the filter at least) while still allowing plenty of air flow. But I want some oil in there to trap the dust and fine dirt so it doesn't eventually work through the foam and enter the engine.

I bet you could run these engines with just a screen over the carbs instead of a filter at all for quite a while without issue. But it's like using decent oil, replacing your brake fluid once in a while, adjusting valve clearances, etc. The bike will run without issue without doing those things for many, many miles, but I want mine to run forever without issues

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I used to be disgusted, but now I try to be amused.

"A fella could pretty much eat his car keys, if they were deep-fried". Billy

plasma

Very good post,10/10.

Plasma.

mikeinva

Best way to see if you have to much oil on a uni filter is to check a/f with the filter on then check it again with the filter off .I f it goes richer with the filter on then you have over oiled the filter.Another thing about uni filters the ones with the red outter foam cover dont flow as good with the red cover on them,you dont need the red cover for clean street use.If you run on dirt or in a real dusty place you need more oil then you do for street use.

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Why do I feel young on my bike

skromfols

Thanks Mike. I don't have an a/f meter, and the nearest drno with an A/f meter is an hours ride from me, so that option won't work. I have the black pods and they don't have the red outer foam cover. I'll just have to be careful about how I clean and oil my pods. As an aside, I have the Uni filter with the red outer cover on my Polaris ATV and it seems to do a good job of keeping the dust out of the engine.

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Stan
08 America, Bub slip ons, A/I removed, emissions "stuff" & air box removed, billet intakes, UNI Pods, rejetted, carbs balanced, intminators, Progressive 412's, 1" risers, seat modified by Spencer, TP USA Option 2 Igniter, 813 cams