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Old 20-06-2019, 18:15   #16
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Re: Engine intake foam filter burns quite easily

I found this (Uni Filter BF1 12" X 16" X 5/8" 65-PPI Green Fine Foamon) on Amazon and ordered some after seeing the Yanmar filter foam disintegrating into the engine intake. Granted, the boat had been sitting in the yard for over a year, but still. I unsealed the new, spare, Yanmar filter to install it, and the foam fell apart in my hand.

The foam sheet cost is around $13 and is washable and suited for the high heat generated by motocross bike engines etc. Your air intake filter is inside a steel housing, so a steel mesh wrapped hunk of foam , if flammable, would not have much luck burning inside it. I too attempted to find a K&N filter without success.
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Old 20-06-2019, 18:25   #17
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Re: Engine intake foam filter burns quite easily

By the way, she starts her Junior year of College this year.
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Old 20-06-2019, 18:29   #18
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Engine intake foam filter burns quite easily

Quote:
Originally Posted by ferrailleur View Post
boat engines are never exposed to heavy dusty environment as is a Caterpillar grader or demo excavator(!)
Why then obsess on super fine and $$ filtration issues?


Belt dust, but usually a K&N is inexpensive and if cleaned correctly will last essentially forever.
The cleaning kit is called a K&N filtercharger kit.

On edit, called a recharger kit now, just google K&N filter cleaning kit.

https://www.amazon.com/99-5000-Aeros...-1-spons&psc=1
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Old 21-06-2019, 10:09   #19
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Re: Engine intake foam filter burns quite easily

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Originally Posted by ferrailleur View Post
don't have room in my round canister for anything other than rolling a stripe of foam around the metal cage.... It's a Universal M 18 diesel engine. I unearthed some packaging foam which looked porous enough and that's it for now.
Any info about a better solution?
K&N has a huge inventory of filters. Almost certain you can find something that fits. Detailed dimensional drawings of each model on their web site.

If you cant find an element to fit inside the existing air filter housing, then ditch the housing and fit one directly to the intake (many K&Ns are installed like this).
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Old 21-06-2019, 12:12   #20
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Re: Engine intake foam filter burns quite easily

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Originally Posted by belizesailor View Post
K&N has a huge inventory of filters. Almost certain you can find something that fits. Detailed dimensional drawings of each model on their web site.

If you cant find an element to fit inside the existing air filter housing, then ditch the housing and fit one directly to the intake (many K&Ns are installed like this).
Thanks.... my home made filter should be OK for now.... we'll see.
I love the mushroom looking K&N filters fitting directly on intake.... unfortunately the intake is inches away from a bulkhead and the flat canister is the only option.
Thanks
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Old 21-06-2019, 13:30   #21
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Re: Engine intake foam filter burns quite easily

Define inches, cause all you need is about 3Ē and that is from the outlet end of the engine.
There are many thin, wider if that makes sense K&Nís, Lord know how many there are, but there all all kinds of sizes and shapes.

This will give you ideas. Perhaps a round one?
https://www.knfilters.com/search/universal
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Old 21-06-2019, 14:25   #22
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Re: Engine intake foam filter burns quite easily

The K&N filter cleaning kits are not allowed on an airplane. Even by ocean freight they are supposed to be declared. I succeeded in getting a kit to Guatemala and ended up using all the cleaner in the first cleaning. There is enough oil for several treatments.
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Old 21-06-2019, 18:03   #23
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Re: Engine intake foam filter burns quite easily

There are two kinds of kits, one has the oil in spray can, I assume that is the one that canít fly?
The other has the oil in a squeeze bottle. We shipped them all the time to Guatemala, Costa Rica, Honduras, Columbia etc.

The cleaner seems to be a lot like 409. Not saying it is, but it smells like it.
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