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1641174 No.1641174 [Reply] [Original] [archived.moe]

Heya, found this old 4 stroke engine that has me confused on this small tank with sponges just above the fueltank, theres 2 "oil fill" plugs below so its doesnt seem to be the oil for it which i first thought since the sponges leak oil when pushed. Anyone know what it is?

>> No.1641177

That's the air filter. Oil in the sponge aids in removing dirt from the air.

>> No.1641178

Ah, the more you know. Thank you

>> No.1641179

some air filters use oil. (yes, AIR filter)

>> No.1641181

a reusable k&n filter also needs a light spray of oil to work

>> No.1641202

Well with that solved, have fun with your engine OP.

>> No.1641252

Thanks, this has got to be the nicest board i've ever visited. See ya

>> No.1641848
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for you op!

>> No.1642768
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Well, since a thread already died for this one, I figured I'd ask here.
Are there any cheap ways to "mod" an old Briggs flathead? Not talking about performance cams and billeted flywheels, I want to nigger rig my shit up.
I know about porting/polishing and flattening the "eyebrows" near the valve seats, but do those actually make a considerable difference in power?
Here's my '86 3 horse, minus the shroud. Guvna is gonna come off too.

>> No.1643144

Any eliminations of venturi in the intake is a performance enhancement.

Wanna chimp out your toy? YouTube. Lots of ideas.

>> No.1643281

Supercharge it with brake clean and an air compressor.

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