new filter ?
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- Posts: 4394
- Joined: July 4th, 2007, 6:57 pm
new filter ?
never seen one. anybody tried it ? http://www.hiflofiltro.com/17.0.html?&L=0&sel_uid=213
- 2strokeforever
- Posts: 1524
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my most recent experience with a UNI filter, oiled till it was dripping with bel ray oil....Its not a UNI, so why even fuck around with it???
didnt even last 80 minutes of racing, jug is on its way to roosty
what we really need is some kind of pre filter where the dirt hits it and either falls off or goes thru, not stick and plug up, or maybe a mini cyclone thing like heavy equipment use
not saying a diffrent brand filter woulda stoped all the dirt, im saying there has got to be a better way to do this
never had issues but i dont like how the uni is kinda sketchy how it seals to the airbox
after swaping the filter out second lap i saw the dirt and figured wtf its toast anyways put a new filter on and did another lap
this is still the same bore from last time a shovel full of dirt went thru, so its not too big a deal
the 450 will have less power and will be harder to start, and will be heavier, but to make up for it it will require more maintenance.
4stroke=dead fish
4stroke=dead fish
- Gravel Scratcher
- Posts: 278
- Joined: September 20th, 2009, 8:45 pm
- Location: Australia, Central QLD
European i think, local honda dealer races and recommends them here.
I think most filters are all right as long as you clean and change them often.
I seal all mating surfaces with grease not those poxy stick on things, never had a failure, touch wood
I think most filters are all right as long as you clean and change them often.
I seal all mating surfaces with grease not those poxy stick on things, never had a failure, touch wood
if there's one thing dad likes more than serenity… it's a two stroke engine on full throttle!
What he said, I put a healthy coating of grease on sealing surface and I also highly recomend using a filterskin oiled with K&N oil over the top, it gets clogged and the uni under is still looking pristine.Gravel Scratcher wrote:I seal all mating surfaces with grease not those poxy stick on things, never had a failure, touch wood
I have heard that you can layer the skins and put a string coming out under the seat for each one, when you feel your loosing power due to a clogged filter pull one off and you have a fresh filter. make sure they're coded so you don't pull all foo on the first pull.
Also, sorry for asking but your basket is under both the foam and the funky Uni seal right?
Paper filters are "barrier" filters. They "block" contaminates from entering the engine by trapping them on the exterior. Paper filters are also pleated, giving them enormous surface area for their size to do this with.
Foam filters are "absorption" filters. The idea is to trap the particles in within the filter, not just on the surface.
When you over oil a foam filter, you transform it from a absorption filter into a barrier filter.
A foam filter has nowhere enough surface area to be able to do this.
Try less oil next time, but make sure the oil is suspended throughout the entire filter.
Foam filters are "absorption" filters. The idea is to trap the particles in within the filter, not just on the surface.
When you over oil a foam filter, you transform it from a absorption filter into a barrier filter.
A foam filter has nowhere enough surface area to be able to do this.
Try less oil next time, but make sure the oil is suspended throughout the entire filter.
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- Joined: July 4th, 2007, 6:57 pm
2strokes, if I was having the dust damages you seem to be suffering I would definetly be trying to prefilter the air box in some way to take some load off of the air filter itself.
In the wet enduros, I'll tape up a lot of the airbox, as sometimes the water holes are nearly seat deep. The side benefit is although it probably hurts performance a bit, the filter stays cleaner. The bike is also a bit quieter which helps in sound tests. (this is on my gen3 250 btw)
I'm also using the no-toil filters and no-toil oil.
In the wet enduros, I'll tape up a lot of the airbox, as sometimes the water holes are nearly seat deep. The side benefit is although it probably hurts performance a bit, the filter stays cleaner. The bike is also a bit quieter which helps in sound tests. (this is on my gen3 250 btw)
I'm also using the no-toil filters and no-toil oil.
- 2strokeforever
- Posts: 1524
- Joined: November 13th, 2009, 1:04 pm
- Location: Vernon B.C Canada
it sat in the sun, worked it in real good then added moremake sure the oil is suspended throughout the entire filter.
no way, theres parts of the filter that are dry from the dirt soaking up all the oil, less oil and it wont last 20 minutesTry less oil next time
i was till my bike flamed out 2 minutes in for no reason at all, either electrical or water in the fuel?The only real solution is to be in the front of the pack!
kicked for 5 minutes, by the time it was going i was behind everyone, fought back to 2nd, then didnt want to do the last lap so i waited for the time cutoff
the bottom is already tapedI'll tape up a lot of the airbox
there damn near impossible to get on my bike, ive spent 45 minutes trying to get it to fit right, went and raced, and there was a little chunk of filter not covered at the back of the airbox, well the dirt just went thru there.....filter skinz work good over the filter. been using them for quit a while.
always do that, never had a problem sealing thereI put a healthy coating of grease on sealing surface
the 450 will have less power and will be harder to start, and will be heavier, but to make up for it it will require more maintenance.
4stroke=dead fish
4stroke=dead fish
- Roostius_Maximus
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Ditch that POS X airbox and put a R airbox on it. Then you can get skins on without magic tricks.
Last year for fun I tried to go a whole season on one filter, twin air. I don't like UNI's. I have learned to keep an eye on the seams on the TA's here, very important as I clean em in gas then soap and water. Granted I don't log nearly as many hours as you and your conditions are worse. I lost track of how many skins I went thru. Changed this filter this spring outta guilt. The airboot was clean as whistle and the filter could have gone longer.
That bike that dogger315 has is running the R box.......
Part of the reason I really like the intelajet is I can tune the carb as the skin gets plugged and keep leaning it out till she is still loading up, then I know the skin is done.
Curious how well the skin works unoiled. Gonna give that a try for sure.
Side not the other product that PC racing makes that is an extra coarse layer of foam like a skin is a waste of time compared to skins IMO. They got a hole in the middle to allow access to the filter bolt, freaking stupid move.
Last year for fun I tried to go a whole season on one filter, twin air. I don't like UNI's. I have learned to keep an eye on the seams on the TA's here, very important as I clean em in gas then soap and water. Granted I don't log nearly as many hours as you and your conditions are worse. I lost track of how many skins I went thru. Changed this filter this spring outta guilt. The airboot was clean as whistle and the filter could have gone longer.
That bike that dogger315 has is running the R box.......
Part of the reason I really like the intelajet is I can tune the carb as the skin gets plugged and keep leaning it out till she is still loading up, then I know the skin is done.
Curious how well the skin works unoiled. Gonna give that a try for sure.
Side not the other product that PC racing makes that is an extra coarse layer of foam like a skin is a waste of time compared to skins IMO. They got a hole in the middle to allow access to the filter bolt, freaking stupid move.
- 2strokeforever
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roosty, i just figured out who makes moose airfilters....... DT1
thought you might want to know
there my favourite so far, wont touch a twin air, seeing how thin and cheap they look
thought you might want to know
there my favourite so far, wont touch a twin air, seeing how thin and cheap they look
the 450 will have less power and will be harder to start, and will be heavier, but to make up for it it will require more maintenance.
4stroke=dead fish
4stroke=dead fish
Some folks diss them, but I have always used Twin Airs on my bike as well as my sons and have never had a problem with them falling apart or letting sand into the motor. I ride West Texas desert and dunes.
.
I put a healthy coating of grease on sealing surface
In the pic you posted of your Uni I dont see a nice thick coat of grease to seal the filter to the airbox.always do that, never had a problem sealing there
.
99 CR500R
2006 Honda CBR 1000RR Fireblade
My Drinking team has a Racing problem !
2006 Honda CBR 1000RR Fireblade
My Drinking team has a Racing problem !
- Gravel Scratcher
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thats how i see it toAlisoBob wrote:
Foam filters are "absorption" filters. The idea is to trap the particles in within the filter, not just on the surface.
When you over oil a foam filter, you transform it from a absorption filter into a barrier filter.
Try less oil next time, but make sure the oil is suspended throughout the entire filter.
if there's one thing dad likes more than serenity… it's a two stroke engine on full throttle!
- freeride588
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I've had good results with maxima FFT, nice and sticky, blue color so you can see spots that need more. I usually put it in from the inside and work it through. seems like belray is about the same.Tharrell wrote:Are you guys actually using oil or a filter spray?
I tried some UNI oil and did not like it, it does not show on the filter, and it flows, maybe I used too much but after sitting a while I find oil dripping from the airbox.
- 2strokeforever
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- Joined: November 13th, 2009, 1:04 pm
- Location: Vernon B.C Canada
the jug of oilAre you guys actually using oil or a filter spray?
thats cause i crank it down tight, most of it smears into the filter, and quite a bit stays stuck to the metal ring that it seals againstIn the pic you posted of your Uni I dont see a nice thick coat of grease to seal the filter to the airbox.
never had dirt get by there
most likely i will have a 2nd (smaller) bike next year that i can use for dusty races and other stuff
the 500 sucks too much air for that tiny filter
the 450 will have less power and will be harder to start, and will be heavier, but to make up for it it will require more maintenance.
4stroke=dead fish
4stroke=dead fish
No time cause my ass is still sore!freeride588 wrote:Tharrell dosent have to worry getting dirt in his engine no time to get any in there when you loop out on the grass out front of your house.Tharrell wrote:Are you guys actually using oil or a filter spray?
Naw, I've taken the tiddler out a couple of times and my 2001 CR250.
Might take one out in a few minutes, it's TOO nice a day not to.
Anyway, the reason I asked about the oil is because that's the way it was done back in the day, back before the tacky spray from the cans.
I use the spray cans now.