K&N Filter Filter

I still have yet to confirm that the engine failure was caused by ingested dirt that scored the cylinders and rings, but that is my current suspect. When I took off the mystery filter, I saw the intake hose had a decent coat of fine dust, and when I blew compressed air through it, just as large a cloud of dust came out the inside as through to the outside. In light of that, I ordered a K&N cone filter from Amazon. Amazon really does sell everything. While I was searching K&N’s website for the appropriate part #, I found this, what they call the Air Force Pre-cleaner. It’s a filter for your filter. It’s reticulated foam impregnated with their oil, “perfect pre-cleaning for agriculture. construction and, of course, all forms of dirt racing!” They didn’t have a preshaped one to fit mine, so I got the generic wrap your own and hold closed with Velcro strips one. As a bonus, there’s enough in the one package for two.

So here it is installed. Oh, BTW, the pimp silicone intake hose is from Pegasus Auto Racing Supplies. It’s unclear where they are manufactured, but they are well constructed. Not the cheap generic mystery unreinforced molded silicone hose found at the neighborhood auto parts. It’s fiber reinforced wound strips, and they have a wide selection of sizes and shapes. The previous engine had different sizes for the ends and I was able to find a good fit. This time it’s pretty much the same size on both ends, and having gotten rid of emissions I didn’t need any ports on the hose so it was very nice and clean.