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Author Topic: ‘paper’ air filters for GO-435 powered AC 520?  (Read 3833 times)

DarylW

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‘paper’ air filters for GO-435 powered AC 520?
« on: March 28, 2023, 07:20:35 pm »
howdy
hoping there is a better way to filter air… my oil analysis shows lots of silicone (sand…) I Have the oil-drenched screen mesh air filters that are probably letting stuff get through… hoping there may be an appropriate alternative for the engines to keep cleaner….. some newer school ‘paper’ type air filter that would fit that engine-PS-5BD carb… any info?
thanks much!
Daryl Wilkins
N11L
‘53 520
A pilot is only as good as his next landing

Adam Frisch

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Re: ‘paper’ air filters for GO-435 powered AC 520?
« Reply #1 on: March 29, 2023, 08:20:40 pm »
Daryl, during my tenureship, there weren't any alternatives. I doubt someone would have developed something for the rare GO-435's as an STC. Could you try to get a finer mesh to stop the sand?
Slumming it in the turboprop world - so you don't have to.

DarylW

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Re: ‘paper’ air filters for GO-435 powered AC 520?
« Reply #2 on: March 30, 2023, 03:52:41 pm »
ADAM !! thanks for your response… I hope all is well… we have a couple ideas in mind to improve things. Might work with IA to bend on the ‘fabricate a part if you’ve exhausted all reasonable avenues cuz its an old plane’ rule. Can’t quote scripture either! N11L just out of annual, getting pitot-static leaks addressed and hope to have her back flying in a week! Got a plan to use her for business too- so that’ll help NOT pay for the current fed agenda  ;)
A pilot is only as good as his next landing

Adam Frisch

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Re: ‘paper’ air filters for GO-435 powered AC 520?
« Reply #3 on: March 30, 2023, 10:39:34 pm »
Great!

How much time you have left on the GO's? Cylinders were already getting hard to get during my time.
Slumming it in the turboprop world - so you don't have to.

DarylW

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Re: ‘paper’ air filters for GO-435 powered AC 520?
« Reply #4 on: May 22, 2023, 01:34:36 pm »
Hey Adam
right engine has about 1000 hours SMOH and the left about 500 hours… I’m seeing about 1/4 quart per hour used on each side, good compressions last annual and borescope that showed ‘all ok’ except… some cylinder wall corrosion (need to fly more)… I have another set of engines from my ‘parts airplane’ that I was hoping to use as an overhaul platform when and if the piggy bank ever gets to an acceptable level again… it is the joy of ownership to accept the uncertainty inherent with this old airframe… but like me… it still has potential!
keep in touch please
Daryl W
A pilot is only as good as his next landing

Adam Frisch

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Re: ‘paper’ air filters for GO-435 powered AC 520?
« Reply #5 on: May 25, 2023, 07:13:27 am »
Mine were very close to TBO and drank oil like crazy. It was leaking in the case split seam, so just lived with it. But they seemed to soldier on - I sometimes get word from the guy in Russia that bough here and she's still flying.
Slumming it in the turboprop world - so you don't have to.

JimC

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Re: ‘paper’ air filters for GO-435 powered AC 520?
« Reply #6 on: May 30, 2023, 06:11:09 pm »
Still flying with or without an overhaul on the engines?
500B, B200

Adam Frisch

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Re: ‘paper’ air filters for GO-435 powered AC 520?
« Reply #7 on: May 31, 2023, 05:05:49 pm »
No overhaul, from what I heard.
Slumming it in the turboprop world - so you don't have to.