The Ford Barn - View Single Post - y-block blow by..

Daves55Sedan · 11-16-2019, 11:16 PM

I also have that same repro oil filler cap they sell for the '50's Y-blocks with the foam filter inside. I did NOT like that foam filter. When it came time to clean it, I submerged the whole cap in a coffee can full of gasoline. After a day or so, the gas melted the foam filter enough that I could pull it out thru the middle underneath.
Then I took a bat of household fiberglass insulation and cut enough off of it to stuff it down inside that cap. It turned out to be a pretty good filter.
The gas also dissolved the black paint, but no big deal, I just repainted it with some cheap Rust-O-Leum black paint, and voila, like new again. Still using that cap.

11-16-2019, 11:16 PM	#37
Daves55Sedan Senior Member Join Date: May 2010 Location: Granite City, Illinois Posts: 3,008	Re: y-block blow by.. I also have that same repro oil filler cap they sell for the '50's Y-blocks with the foam filter inside. I did NOT like that foam filter. When it came time to clean it, I submerged the whole cap in a coffee can full of gasoline. After a day or so, the gas melted the foam filter enough that I could pull it out thru the middle underneath. Then I took a bat of household fiberglass insulation and cut enough off of it to stuff it down inside that cap. It turned out to be a pretty good filter. The gas also dissolved the black paint, but no big deal, I just repainted it with some cheap Rust-O-Leum black paint, and voila, like new again. Still using that cap.