Convert '71 Cj5 Oil Air Filter

Is there anyway to convert the oil type air filter to a filter element cartridge?
and retain oem look? I have seen people do this with early MB/gpw

 

Yes. But why.

 

I don't have a step by step procedure but the answer is yes, it can be done.
I cut mine open , removed the factory guts, trimmed down the breather tube, found a filter that fit then painted and reinstalled it.

 

Because oil baths are messy and restrictive.

 

I have a f head with fender mounted big oil type filter messy

 

Not really familiar with Dauntless air bath, but I would never switch from the stock system in any of my F heads. Never. Efficient, economical and downright effective.

 

Easier and less messy than many other routine jobs on a Jeep.

 

I cut a few oil baths, now wish I had saved them and just put a '70 dry housing on. They're not that hard to find, now that we have the internet.

 

I use the Factory firewall mount oil bath on my 64 Jeep, I figure the Army used them on everything Army, so I believe they work well. My Cabin is in a part of Michigan that is all sand, my Cabin is on a sand dune, only topsoil is from composted leaves over the years, down 4" is yellow sand.

 

I too prefer the oil bath air cleaners, not just for looks, but keeping the stock look appeals to me on a vintage Jeep.

As far as economy goes, here is a comparison.

My old Ford tractor has an oil bath air cleaner, and my more modern John Deere has a paper element air filter.

My tractors are used for chores that produce a lot of dust, and chaff. The John Deere air cleaner cartridge has to be replaced fairly often or it will get so clogged up it won't run good. The oil bath on the old Ford also traps lot of stuff, but all I have to do with it is take the cup off, dump and rinse, add new oil and go costing only a little clean oil which I always have plenty of.

I think both do a good job, but John Deere parts aren't cheap, and even the air filter elements are expensive.

 

My understanding (it's been a day or two) a paper air filter will trap a much finer particle. So like a furnace if you never change your filter you are better off with the filter that traps only what is needed to trap to protect the furnace components between an eventual more in depth service. if you have sensitive components in the system like sensors you will need a finer filter to protect them.

An f-134 will tolerate a bit more debris than new engines but you want to keep the oil at level and not have that oil enter the motor.

Also think of the filter used on jet engines... that 737 you flew in on has nothing and is fine eating small birds. It's the geese that get em.

 

Several years ago, Tim E started a thread detailing the process he used to convert his air cleaner from oil bath to a paper filter element:

http://www.earlycj5.com/xf_cj5/index.php?threads/125255/

 

Quite subjective, since there are many different brands and types, and we are not lab-testing them.

Who can guess what percentage of any particle size may be caught, versus some slipping through, in either filter type? Subjectively, the sediment I find in oil bath reservoirs seems to be extremely fine, as well as catching bugs and chaff. No geese.

The oil bath just seems like common sense to me, and I trust them. So do heavy equipment manufacturers.

 

A goose is what brought down the plane in the Hudson River. A Canadian goose. Not a dove or anything small. Commercial Jets don't have intake filters.

Again a f-134 or even a 225 don't need a paper filter. We don't have anything to worry about that the oil bath can't handle.

Reputable Paper filters are tested per iso 5011.
They require a lot of surface area for airflow and as they catch a particle it typically stays there in the media. As they clog up with larger particles the smaller ones are forced into smaller openings until it is completely clogged.

An oil bath uses a labyrinth design like a grease hood for a kitchen. The particles are forced to make sudden twists and turns so the particles carried in the air are separated from the air flow and is captured by the oil on the filter media. The oil is needed to capture the particles and also cleans the media of debris.

BTW what was the last heavy equipment to use oil bath filters on equipment?

 

It's been a while. Donaldson doesn't list any oil bath air cleaners in their catalog. They are one of the biggest world-wide suppliers of air filters for on and off highway equipment.

 

I converted my Dauntless oil bath cleaner to paper. I had found the oil bath cleaner messy and a pain to deal with.

There are documents out there somewhere showing that oil bath cleaners aren't very effective at low RPM due to lower air velocity. In an agricultural type application where the engine runs at steady mid range RPM they are good, idling not so much.

The turbine engine comparison is a complete apples and oranges situation. A turbine engine doesn't have anything similar to a cylinder wall/piston ring relationship where parts exposed to air are rubbing against each other and lubricated with oil. Those engines are a completely different design that doesn't require being protected against fine grit all the time. Aircraft piston engines are definitely protected by filters.

 

You guys are such jokers. Next you'll be trying to tell me that President Lincoln dead!

 

thanks all for the imput
i think i will leave my oem oil filter on my f head as is.