Comodave
Moderator Emeritus
- Joined
- Jul 2, 2015
- Messages
- 22,318
- Location
- Au Gres, MI
- Vessel Name
- Black Dog
- Vessel Make
- Formula 41PC
I've wondered about this a good bit. My DD 4-71s have no filter (looks like they never have). Just an air box.
Has anyone seen air filters for 4-81/6-71s? Not sure how I'd fit one on the intake - it's probably a 12" x 3" rectangle opening.
I had 6V53s in a previous boat. They slobbered quite a bit of oil out of the air boxes. The mechanic came up with a solution that worked very well and was cheap to contain the oily air coming out of the air boxes. He took a couple of small hoses and ran them from the air box outlets to a fuel filter canister. He removed the element from the canister and hooked the hoses to the canister head. He left one input to the filter head open for the air to escape. He said the air flowing into the canister would hit the side and the oil would stick to the side and then run down inside the canister. Then the clean air would flow out the open inlet. I would drain the canister about every 24 hours and get about 6 to 8 ounces of dirty oil out of it. Simple to do and no ongoing cost after the initial install. And think about how much oil was not sprayed around the engine room since I got about 6 ounces out every 24 hours run time. Cheap Airsep.