---------------------------------------------------------- Rocket-List Digest Archive --- Total Messages Posted Tue 11/23/04: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:03 AM - Re: IO-540 Breather lines (Rocket Shop) 2. 04:55 AM - Re: IO-540 Breather lines (Archie) 3. 06:20 AM - engine vent (Frazier, Vincent A) 4. 06:12 PM - Breather vacuum (Archie) ________________________________ Message 1 _____________________________________ Time: 04:03:02 AM PST US From: "Rocket Shop" Subject: RE: Rocket-List: IO-540 Breather lines --> Rocket-List message posted by: "Rocket Shop" I like the speed! I have a big hose with the Christen spring, but they didnt like the fitting I was using. Apparantly these engines really need to breathe to keep the oil leaking under control! Russ > --> Rocket-List message posted by: "Ron C" > > Hi Russ- > > I am using a big fuel line type hose with a spring inside. The spring > keeps the hose from collapsing when you bend it in a small radius to get > it going down hill. The springs are available from Christen enterprises > in afton,WY. I don't have the p/n. One thought ids to get the vent line > to rout up to the top of the cowling to give the oil more chance to run > back into the engine before making it over the "hill" and down the pipe > to the bottom of the plane. Other options are to go to Checker and ask > to look at their stock hoses. They have dozens of them in many prebent > shapes thus negating the spring requirement. > > Good luck. > > P.S. I did 245 mph indicated yesterday in cedar valley! > > Ron Carter > N230RC > > > ---------------------------------------------------- > This mailbox protected from junk email by MailFrontier Desktop > from MailFrontier, Inc. http://info.mailfrontier.com > > > -----Original Message----- > From: owner-rocket-list-server@matronics.com > [mailto:owner-rocket-list-server@matronics.com] On Behalf Of Russ Werner > To: rocket-list@matronics.com > Subject: Rocket-List: IO-540 Breather lines > > > --> Rocket-List message posted by: "Russ Werner" > > I'm interested in what kind of fittings folks are using on the breather > line on their engines, particularly if you have the B & C oil filter > adapter installed. I went to great lengths to get something that works, > but Ly-Con says it isn't big enough. Between the engine mount and the > adapter there isn't much room to turn from heading up to going down! > > Russ > HRII > > > _- ===================================================================== > _-> _- ===================================================================== > _- ===================================================================== > _- ===================================================================== > > > > > > -- ________________________________ Message 2 _____________________________________ Time: 04:55:51 AM PST US From: "Archie" Subject: Re: Rocket-List: IO-540 Breather lines --> Rocket-List message posted by: "Archie" If you have the ability to receive cad files, I will show you part of a system that may help alleviate this problem if you are using conventional piston rings, and consuming excess oil. The basic components can be purchased at any automotive speed shop. In racing, this system has been employed for years to create negative crankase pressure. In fact, we also incorporate vacuum pumps to to increase vacuum to the level that main oil seals must be installed backwards. Archie Frangoudis, Archie's Racing Service ________________________________ Message 3 _____________________________________ Time: 06:20:43 AM PST US Subject: Rocket-List: engine vent From: "Frazier, Vincent A" --> Rocket-List message posted by: "Frazier, Vincent A" SNIP I am using a big fuel line type hose with a spring inside. The spring keeps the hose from collapsing when you bend it in a small radius to get it going down hill. The springs are available from Christen enterprises in afton,WY. I don't have the p/n. One thought ids to get the vent line to rout up to the top of the cowling to give the oil more chance to run back into the engine before making it over the "hill" and down the pipe to the bottom of the plane. Other options are to go to Checker and ask to look at their stock hoses. They have dozens of them in many prebent shapes thus negating the spring requirement. Good luck. P.S. I did 245 mph indicated yesterday in cedar valley! Ron Carter N230RC SNIP I tried to get the oil vapors to burn off on the hot exhaust pipe. Some burned, but the rest just ends up on the belly. Not much, but any is too much. I'm going to make a oil separator today to match the one I had on my RV-4. It worked very well. Never had a drop of oil on that belly. Take a medium sized (8 oz or larger is good) of Oatey PVC cement, like you'd use on PVC pipe. Throw away the cement and clean out the can. Solder two 5/8 x 3/4 brass hose barbs to the bottom of the can. Loosely fill the can with pieces of scotchbrite, screen mesh, or other material that will give the oil vapor somewhere to condense. Mount the hole thing in the engine compartment so that you can run the vent line to it and away from it. To clean, simply remove the large cap and drain out any oil goo that accumulates. Mount the thing so the cap is on the bottom. Don't forget to cut a whistle slot in the upper part of your vent line. Vince ________________________________ Message 4 _____________________________________ Time: 06:12:23 PM PST US From: "Archie" Subject: Rocket-List: Breather vacuum 3.60 ALT_MED Misspelled medication name --> Rocket-List message posted by: "Archie" I have had so many inquiries to my commentary, will attempt to cover some here just one time. First, the best time to stop oil burning and leakage is during overhaul. If you believe that the factory has all the best overhaul procedures, stop here, because I am not a proponent of model T technology. Throw those factory rings away, and place a mirror finish on the cylinders. For more on this, you must take in one of my seminars at OSH. Regarding the vacuum system, nothing is plumbed to the atmosphere per se. We want to generate negative pressure in the engine crankcase. The drawing I sent out is incorporated into the exhaust system to generate vacuum at cruising rpm. At lower speed, a line is "T"d in to the induction manifold to generate low rpm vacuum. any residual oil will be drawn into the exhaust, and not on the belly of the AC. On the racing versions, an additional pump is incorporated to increase vacuum to the point that crank seals must be installed backwards. The system works just fine, even with old style rings. Hp can be increased if incorporating modern cylinder wall prep and rings during overhaul. With a bit of additional work, can also be used as a backup vacuum for instruments. I make my own parts for customers, but basic component kits are available at speed shops, or from www.cantonracingproducts.com believe the part number is 65-something.