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Engine basics => Four strokes only => Topic started by: Paul Smith on January 27, 2025, 05:26:44 PM

Title: Bottom end lubrication.
Post by: Paul Smith on January 27, 2025, 05:26:44 PM

I got an old plane with a 4-stroke and I'm looking over it for the first time.

I don't see how the bottom end gets lubricated.  The fuel just goes into the combustion chamaber.
What about the crankshaft, rod, cam and valve lifters?

Title: Re: Bottom end lubrication.
Post by: Robert Zambelli on January 27, 2025, 07:20:22 PM

Everything below the piston is lubricated by blow by.