I needed something heavy duty that actually condenses all the vapor I can possibly get, and flows alot of air....given that I have major blowby thanks to bad rings. The car runs like crap and is getting 8 degrees of KR at half throttle at 15psi. Like mcasteel's setup, I used a propane tank, but thats the extent of the similarity. I chopped a full size propane tank down, removed the valves and used some neoprene hose, a big Y-fitting, some 1/8" NPT fittings and threaded tubes, a big bronze scrubbing sponge and assembled everything. Most catchcans just have vapor running through, and collect oil on the inner walls and hope it fully condenses and traps everything. I basically want NO vapor making it through. But I dont want a fine mesh filter that will fall apart over time, after being exposed to heat and acidic oil vapor for endless cycles. I had this happen with the one I made a long time ago. Hopefully the cheesy drawings I made and took pics of, are visible enough to read. I also bought a new passenger side valve cover grommet, an elbow made for the same grommet, and a long length of hose that squeezes between the oil filter and IC bracket and dumps straight down. I may get a filter vented oil vapor canister from Jegs to handle that end when I get into boost and the PCV system is no longer handling the oil vapor....So I'm going to have 2 catchcans for 2 different purposes. Just running a filter on that side results in too much smoke and it stinks too bad to handle when climbing the 4 mile hill on the way to work, and I'm at 2-3psi the whole way up. The custom PCV valve I made is in concept, the same as your typical ball and spring boost controller, and flows the same as a stock PCV...I know this because my BLM's didnt change at all with it. Ive played with other homemade PCV valves, and if they flowed too much or too little, my BLM's would change alot. This "ball valve PCV" has absolutely no backflow. It seals tight under boost. Even the best PCV valves have backflow issues. The vacuum signal at the drivers side valve cover is insane. It feels like a vacuum cleaner. Running the PCV from the drivers side valve cover, from the elevated position of the breather tower (which I machined an aluminum, o-ringed plug for ((pops right into the tower instead of a breather filter)) and tapped the end, and installed a 1/4NPT right angle fitting, to hose, to the check ball PCV, to the vapor collector, to the vacuum block), sucks no actual oil like it does from under the intake manifold (even with a valley pan style gasket, it always sucked oil), and it draws air from the passenger side valve cover vent, all the way through the whole motor...instead of sucking from the valley and drawing through 2 major vacuum leaks (A breather filter on both valve covers).
I'm going to install this can over the weekend and hopefully it can get me back on the road.
I'm going to install this can over the weekend and hopefully it can get me back on the road.
