M20F air filter replacement?

[Dieselsnplanes]

I’ve searched for a bit and can’t get a solid lead.

My F model has the sticky messy air filter and wanted a regular synthetic material replacement for it but I can’t seem to find one. Donaldson has every model but the E & F, and Aircraft spruce lists a paper pleated filter but doesn’t have any details on it.

I don’t want the Challenger\KN filter as in motor sports they dust cylinders.

Some part numbers or help would be great!

[MB65E]

Same issue. Donaldsons are nice. Cleanable element but not the sticky mess. 
I have a Challenger in mine now. The seals I feel are unsafe and I don’t install the seal anymore. I run the ram air most of the time and change the oil often. 
The entire intake on the airplane could be much nicer. 
This might be a really short thread! 
;-)
-Matt

[Dieselsnplanes]

Do you have the Donaldson part # or is it not available for F models.

[Guest]

As far as I know there are only two choices for the E and F models.  The Brackett oiled foam and the K&N Challenger.  The OEM hasn’t been available for years.

Clarence

[MB65E]

For clarity, I was referring to the Donaldson as being a decent filter. Just not approved for the E/F. I’ve used them on 182s and such. 
-Matt

[M20F-1968]

22 hours ago, MB65E said:

Same issue. Donaldsons are nice. Cleanable element but not the sticky mess. 
I have a Challenger in mine now. The seals I feel are unsafe and I don’t install the seal anymore. I run the ram air most of the time and change the oil often. 
The entire intake on the airplane could be much nicer. 
This might be a really short thread! 
;-)
-Matt

I have the K&N filter on my F, however, given my turbonormalizer, it is the same K&N installed on the J (behind the L Cowling air inlet)  The gasket seems spongy and not very durable.  I worry about it coming apart and getting ingested into the engine.  Is this your concern about the OEM K&N gasket?  I thought of making a new gasket from the reddish silicone (about 1/8" think) gasket material I purchased from Aircraft Spruce (such as what the Real Valve Cover gaskets are made from).  What does the audience think of that substitution?

John Breda

[MB65E]

Exactly my concern. I even ordered the new gasket. Self adhesive sticky back to the back of the filter. It should seal better than it does, but I don’t want to risk ingestion. I don’t want anything that need to be replaced behind the filter. If the bracket used about 1/2 the fluid they do that would actually be better I think. 
-Matt

[Guest]

There is an AD on certain Brackett air filters for replacement of the filter housing because they would allow the gaskets to be ingested by the engine.

https://rgl.faa.gov/Regulatory_and_Guidance_Library/rgad.nsf/0/ED4848C66447B35686256A40006C6AFE?OpenDocument&Highlight=brackett

Ive never seen an E or F with the original filter, they’ve been Brackett or K&N.

Clarence