water proof airfilters

[Coop88]

are they any good or what? also are foam filters better than the gauze ones?

*WATERPROOF AIR FILTER 35mm* 125cc PIT PRO MOTOVERT PIT BIKE THUMPSTER ATOMIK | eBay

 

[K.Jansson]

For mx i would use foam filter with a good filter oil.

There is some filter skins that they say will pretend water get throught the filter, havnt tested them but will probably get some this year

 

[my67xr]

^^ do you mean prevent?

 

[foolsp33d]

potato patato..

think about it... if something is WATERPROOF... its sealed right.. carbs/induction still needs to be able to suck air.. if its sucking air.. then chances are its GOING to suck water!! You would be better off with a rerouting to a higher point on the bike of the air filter, consider it like a 4wd snorkel.. or buying a few spare filters and keeping them oiled and such in a zip lock bag, and change them as they are becoming saturated..

personally you would be better off with something like

Air Filter Service Products >> Belray Waterproof Fiber Filter Oil (Aerosol)

 

[my67xr]

something doesnt need to be sealed to be waterproof.

you can buy fuel funnels with a fine gauze mesh in them,
so when you pour your fuel into your tank via the funnel, no water will not go through into your tank.
they work well, we used them at the wreckers for reusing old fuel from smashed up cars etc

we tested them out, we poured 500 grams of water (1/2 Litre) into 5 litres of old petrol.
then ran it through the funnel and got 499 grams of water out of it,
it looked like the other gram of water was still sitting in the mesh too.
we couldnt spot any water in the bottom of the clear 10L container we poured the fuel into either


a local place here sells the water repellant pre filters, they are cheap too-
OUTWEARS WATER REPELLENT PRE-FILTER | eBay
K&N also make and sell them as well.

 

[zwebx]

with only a bit of water getting in... it should be allright i mean some of the older preformance cars used to inject water because of its ability to expand so she should be allright and if any water gets into your engine and your worried about things rusting... think again at how hot your engine is it would not stay in the engine for long at all... but leave it in the rain for 1 yr or two and then look at the rust

 

[RangaBlitzFanga]

water in your air filter/carby/engine is a very minor issue as long as you know a few things about what to do

First of all, water in any of these parts is not harmful 99% of the time. The other 1% is when water is left in the engine/carb for a long time and cause rust, or when a large amount of water suddenly enters the cylinder at high rpm (you would need to ride your bike directly into a river and hold the throttle pinned for a few seconds). In this instance what happens is the engine is spinning very fast and too much liquid enters the cylinder. On the compression stroke it's not able to compress the water and the result is potentially bent/cracked crankshafts, valves etc

Small amounts of water mean bugger all, if theres water in the intake it'll get sucked into the engine and burnt off in no time. If there's a large amount of water it'll stop the bike from revving or even running. The fix is quite easy

- Turn the fuel off
- Open the carby drain screw (the flathead screw at the bottom of the carb) and drain it all out
- Hold throttle wide open and kick it over several times to push water out of the cylinder
-OR- Remove spark plug and tip bike so it drains out
-OR- If you've flooded the cylinder and it won't turn over due to compression lock and you have no spark plug socket, put it in 4th/5th gear and push it backwards, then forwards, try the kick starter slowly. Repeat until enough water has been pushed out intake/exhaust
- Tighten carb drain screw
- Fuel back on
- Kick the bike over a few times and it'll fire up

Note: Enduro bikes ride through deep water crossings all the time, and in most cases is harmless. The bike should remain running for a few seconds even when completely submerged in water (as there's still some air in the intake to be used, podfilters with no snorkel/airbox will run out quicker). So if you hit a short creek crossing, feel free to ride through it
However if the engine starts to lose power and die out, or you're about to tip over and submerge it, hit the killswitch! this will prevent a lot of water getting into the cylinder. If you're lucky you'll be able to pick it up, push it out and start it as soon as you're out of the water

 

[Cordogs]

Wow good to know! Cheers mate.