Is this not the dumbest most restrictive air filter design?

[Hersheyfarm]

Was cleaning my u48-5 mini ex air filter and it dawned on me how restrictive it is. I had a kx040 before this with basically the same motor and i don’t remember this design. This isn’t the first time cleaning, it’s just i was think this time how to get dirt blown out from the bottom that is completely incased in the metal. There is no reason for this design except to cut down on air flow.

Why? It’s in an air box and doesn’t need protection. Crazy. And the filter media continues all the way down to the rubber seal.

 

[redman135]

I used to drive a small tractor that had a filter with just under 1/2 the filter blocked off. Your one is not to bad by comparason.

 

[dstig1]

Engineers don't do things for no reason, so I'm guessing there is a reason for it. Now I can't say if it is a GOOD reason or not ...but I would suspect so. Since it obviously is not going to help airflow, it must be for another reason.

 

[ruffdog]

My toolcat has a similar filter design. You'd be surprised how much dust that thing will hold! Better than you would think.

 

[bcp]

If the filter goes in vertically with the shielded part on the bottom, it might be to catch dirt that would otherwise drop under the filter when the filter was removed.

Bruce

 

[JWR]

Hershey: without measuring air pressure differential outside to inside with this filter design & comparing that to other designs there is no reason to condemn it. Do you have some problem that could be tracked to restrictive filter flow ? No I don't think so. Your observation is that the thing is needlessly restrictive (and maybe so, you may be right) but at this point there is no evidence and even less evidence that it will ever matter. My Perkins diesel filter looks very much like that one (though without the solid sheet metal section lacking holes.) Does anyone in the forum have an engine problem due to restrictive filter design?

 

[workinonit]

That's not restrictive at all. My track hoe has filters just like that, much larger but same design. As a matter of fact, it has a second filter that fits inside a filter like that.

 

[Hersheyfarm]

Hershey: without measuring air pressure differential outside to inside with this filter design & comparing that to other designs there is no reason to condemn it. Do you have some problem that could be tracked to restrictive filter flow ? No I don't think so. Your observation is that the thing is needlessly restrictive (and maybe so, you may be right) but at this point there is no evidence and even less evidence that it will ever matter. My Perkins diesel filter looks very much like that one (though without the solid sheet metal section lacking holes.) Does anyone in the forum have an engine problem due to restrictive filter design?

My guess is its air restriction for maybe emission reasons, to help stay at a lower HP, or to help achieve a certain air to fuel ratio…

You and i dont know, but it ain’t going to keep me from trying to figure it out.

 

[Hersheyfarm]

That's not restrictive at all. My track hoe has filters just like that, much larger but same design. As a matter of fact, it has a second filter that fits inside a filter like that.

Its pretty restrictive, especially when you take into account the amount of dust that gets in it, and almost all equipment have the secondary filter set up.

 

[big bubba]

a gauged bench test of the filter design would be the way to answer your visual speculation. if that design were faulty the intake would be starved & show up under load.