A-75 rings

Anything having to do with an engine that powers any Aeronca aircraft
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Jessica7AC
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Joined: Fri Jun 04, 2021 14:20
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A-75 rings

Post by Jessica7AC »

I am doing a top O/H on my a-65 c a-75. I plan on replacing two of the cylinders. The other two were replaced 100 hours ago or so. They are p015. The pistons are stamped 4597 which I think are piston P/N 40577. Do you guys know which piston rings I need? Does anyone sell sets of them?
At minimum I’ll need two cylinders and four sets of rings, if it’s available I’d be interested in two pistons as well.

Thanks for the help!
Paul Agaliotis
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Joined: Wed Dec 08, 2004 18:49
Location: San Martin, California
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Re: A-75 rings

Post by Paul Agaliotis »

Fresno Air Parts should have the A-75 parts you need. The 40577 pistons used in the A-75 have 3 rings and a small piston pin diameter, .859. The ring set will be the same. A-75 cylinders are different than A-65 by the use of Stellite components in the valve gear. Connecting rods are different by the use of the larger pin bushing to accommodate the smaller pin and are drilled for lubrication of the opposite cylinder at BDC.

Paul
Mailing Adress : Paul Agaliotis 2060 E. San Martin, San Martin,Calif. 95046
Jessica7AC
Posts: 2
Joined: Fri Jun 04, 2021 14:20
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Re: A-75 rings

Post by Jessica7AC »

Thanks! I ordered a bunch of stuff from Fresno Air Parts today. They have exactly what I needed.
Paul Agaliotis
Posts: 2573
Joined: Wed Dec 08, 2004 18:49
Location: San Martin, California
Contact:

Re: A-75 rings

Post by Paul Agaliotis »

Jessica,

They are a great bunch to work with, knowledgeable on their products. They have many more part than they advertise.

Paul
Mailing Adress : Paul Agaliotis 2060 E. San Martin, San Martin,Calif. 95046
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