CCV reroute predicament
Fleet Owner
Joined: Nov 2003
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I actually went up to 1" hose w/ my new installation, but I really do think 3/4 inch is fine. I will do a pressure drop calculation on a 5/8 inch hose and 10 cfm tomorrow at work (I hope I remember). I assume it is about 10 feet total (plus the filter)?
Fleet Owner
Joined: Nov 2003
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I am an Engineer (at least until the next layoff). I appreciate the compliment, but most of my answers come from spending time w/ the Ford literature that I have accumulated (and been given by several gracious people on various sites).
Posting Guru
Joined: Feb 2009
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From: Moyock, NC
IMO your 3" PVC is too small for the job and the filter media is inadequate...which is why your getting blow-by even though some of it is getting picked up in your canister. Opening the petcock will relieve the pressure, but its almost the same as venting to the atmosphere. To be emmissions freindly (in other words to avoid any hassle from environmentalists or emmissions inspections bubbas) the ccv filter is the way to go...closed system. I would get a bigger system and keep it closed. I picked up a Racor CCV 6000 filter assembly off ebay (new in box included filter element) for $80. It was listed as a Caterpillar part number 280-4015...I checked with Parker on whether it indeed their part and they said yes. I did call two local CAT parts distributors in my area and they listed the part at $603.00 and $593.12...so, pretty decent savings if you want to do this mod. There out there...check out ebay. Good luck with the mod.
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Logistics Pro
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Hotshot
Joined: Dec 2003
Posts: 15,368
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From: Stuttgart, Ar
I had one from NC hornet also and disconnected it very very quickly. It made my truck blow blue oil smoke out the tail pipe. After talking to a tech that recently removed one (within the past 3 days) he said that the crankcase pressure was extremely high with the CCV mod through the canister. I have been having an on going argument with a tech friend of mine who is totally against this mod. He's worked on powerstrokes for 17+ years, seen trucks with 400K+ miles running tuners and has NEVER seen a problem with running the oil through the intercooler. Mine is back to stock and my blue smoke disappeared at the tail pipe. I have one for sale cheap if someone wants it.
Fleet Owner
Joined: Nov 2003
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The crankcase pressure will be a function of the "blow-by" you have and the pressure loss in the crankcase vent system. For the horsepower of our engines (and an assumed 10 SCFM vapor load in the CC vent) the back pressure will be about 2 psi for a 3/4 inch hose. The back pressure will be 0.4 psi for 1 inch hose. Joe - the 5/8 inch hose is too small IMO - even if you leave the petcock valve open. I will say that a 10 SCFM vapor load is a high flow rate, usually seen w/ older engines.
I do not believe that 0.4 psi is an issue, so I will probably keep my system. I had no observable negative affect w/ my filter (ie no smoke, no oil loss, no pressure at the dip stick).
npccpartsman - what size hose did you run when you had the system installed? Much of the pressure drop is in the hose. I do believe though that the filter from NC Hornet may be too small if you have much "blow-by".
You can get a pressure gauge and "tube it up" to your dip stick tube to measure the crankcase pressure.
I do not believe that 0.4 psi is an issue, so I will probably keep my system. I had no observable negative affect w/ my filter (ie no smoke, no oil loss, no pressure at the dip stick).
npccpartsman - what size hose did you run when you had the system installed? Much of the pressure drop is in the hose. I do believe though that the filter from NC Hornet may be too small if you have much "blow-by".
You can get a pressure gauge and "tube it up" to your dip stick tube to measure the crankcase pressure.
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Logistics Pro
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It almost seems that the best thing to do is vent it to the atmosphere and be done with it.....aside from the leaks. Now that I disabled my EGR valve, I may even return it to stock....Not quite sure yet. I knew that thing was a POS when I first opened it.
Fleet Owner
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Joe - from my calculations, I am SURE that the 1 inch hose and the ccv6000 will not backpressure the crankcase. I will test it tomorrow (I need a 10' section of hose to get my pressure gauge connected to the dipstick tube and run to the cab). I will be able to see as low as 1 psig (and can see vacuum if there is any). I will post the results.
My intake is definitely clear of oil from the mod. I am still convinced it is a good mod.
My intake is definitely clear of oil from the mod. I am still convinced it is a good mod.
Hotshot
Joined: Dec 2003
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From: Stuttgart, Ar
I had a crankcase pressure test run last fall because I thought I had excess blowby but it was well within spec. I was running 1" hose, but the connections were only 5/8. The smoke from the tailpipe was constant with the canister hooked up. back to stock it complete disappeared. It was so bad I thought my turbo seals had gone out, but that was not at all the case.
Fleet Owner
Joined: Nov 2003
Posts: 27,900
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I had a crankcase pressure test run last fall because I thought I had excess blowby but it was well within spec. I was running 1" hose, but the connections were only 5/8. The smoke from the tailpipe was constant with the canister hooked up. back to stock it complete disappeared. It was so bad I thought my turbo seals had gone out, but that was not at all the case.
Also, do you know what is an acceptable crankcase pressure?