Originally Posted By: Rand
toilet paper air filter.. that is when the guy in the restroom is blowing it up in the next stall and you plug your nose with TP?
That's a seperate discussion. I've recently started checking an air quality website here and the numbers are fairly alarming, so I may be building a better respirator shortly.
Build a better respirator and the world will cough politely and move on.
Originally Posted By: Rand
Also you would be seriously reducing your surface area on the filter.. (why filter is pleated)
and definite durability concerns esp. with moisture.
The first bit is probably true to a large extent, (though if the paper is sucked against the filter it may end up somewhat pleated). However, it doesn't seem to matter, since the general condemnation limit for filter restriction is 10 inches of water so I've got a lot of headroom. The "naked" filter apparently has very little restriction.
The results of that paper I linked to above suggest that sub-condemnation filter clogging has very little impact on fuel consumption or power output in carb cars, and essentially none in fuel injected cars.
IF its different for my car I should eventually see a rise in fuel consumption due to running rich, and I'll be defeating any decoke effect of my restriction gauge/decoker, so I'll have to stop doing it.
I can reduce the chance of this by reducing the applied restricdtion to the minimum necessary for the decoker to work, perhaps about 2 inches of water.
Only other potential downside of the decoker I can see is possible thermal shock damage from water droplets hitting the back of the intake valves. Can't really evaluate that risk, but it might be slightly reduced by fitting the smallest available needle (has #22 in at the moment). The risk could be eliminated by using steam, which might be possible, but its more complicated and potentially richens the mixture by displacing air.
Re durability, I think that's exaggerated, but there's only one way to find out. If the paper turns to mush, I'll have a mushy air filter, but I won't have to junk it until its a mushy clogged air filter, which is likely to take quite a while.
All that said, foam is probably better. If I'd had some suitable foam, I'd have used it, and when I come across some I probably will.
I might still try paper on the outside of the foam though.
Textile is another possibility. Maybe a crepe bandage?
toilet paper air filter.. that is when the guy in the restroom is blowing it up in the next stall and you plug your nose with TP?
That's a seperate discussion. I've recently started checking an air quality website here and the numbers are fairly alarming, so I may be building a better respirator shortly.
Build a better respirator and the world will cough politely and move on.
Originally Posted By: Rand
Also you would be seriously reducing your surface area on the filter.. (why filter is pleated)
and definite durability concerns esp. with moisture.
The first bit is probably true to a large extent, (though if the paper is sucked against the filter it may end up somewhat pleated). However, it doesn't seem to matter, since the general condemnation limit for filter restriction is 10 inches of water so I've got a lot of headroom. The "naked" filter apparently has very little restriction.
The results of that paper I linked to above suggest that sub-condemnation filter clogging has very little impact on fuel consumption or power output in carb cars, and essentially none in fuel injected cars.
IF its different for my car I should eventually see a rise in fuel consumption due to running rich, and I'll be defeating any decoke effect of my restriction gauge/decoker, so I'll have to stop doing it.
I can reduce the chance of this by reducing the applied restricdtion to the minimum necessary for the decoker to work, perhaps about 2 inches of water.
Only other potential downside of the decoker I can see is possible thermal shock damage from water droplets hitting the back of the intake valves. Can't really evaluate that risk, but it might be slightly reduced by fitting the smallest available needle (has #22 in at the moment). The risk could be eliminated by using steam, which might be possible, but its more complicated and potentially richens the mixture by displacing air.
Re durability, I think that's exaggerated, but there's only one way to find out. If the paper turns to mush, I'll have a mushy air filter, but I won't have to junk it until its a mushy clogged air filter, which is likely to take quite a while.
All that said, foam is probably better. If I'd had some suitable foam, I'd have used it, and when I come across some I probably will.
I might still try paper on the outside of the foam though.
Textile is another possibility. Maybe a crepe bandage?
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