View Full Version : PCV System
blageo23
08-08-2007, 09:59 PM
What should I do with it? What do you guys do with it. Keep it going to the manifold or just have it vent or what?
Super Bleeder!!
08-08-2007, 11:08 PM
If you route it to the intake manifold like stock, throw a catchcan in between the two. Get a catchcan that actually does something, like one with steel wool inside it for the oil to condense onto.
You can also remove the PCV valve and route a line to your intake pipe that connects to your turbo. You'll always have vacuum so no need for the valve. Use a catchcan in this instance too.
bottom line is negative pressure in your crankcase is a good thing, dont just do away with the whole system.
blageo23
08-09-2007, 09:30 AM
Damn, I didnt want to have to hook it up. hmm, now I got to think of a way to make it look perdy.
Kracka
08-09-2007, 10:20 AM
Take out the PCV valve, its not creating any crankcase vacuum with an open crankcase breather (nipple/vent on left side of the valve cover when you standing in front of the car facing the engine). If you want to create a crankcase vacuum, which is a great idea, get a product called Krank Vents. I installed them on my S2000 and oil consumption has gone down to ZERO even when I went 4500 miles on an oil change (its normal for '00-03 F20C engines to consume oil, Honda claims its due to the high performance nature of the engine and the cylinder wall lining). With the engine running, its tough to pull out the dipstick with the vacuum, but when you do you can hear the air rushing in. This will prevent the typical DSM/EVO problem of the dipstick popping out under boost. Also, the crankcase vacuum will make your engine run more efficiently and you will pick up some power (non-turbo S2000's are averaging about 3whp on back-to-back runs, the boosted ones even more).
blageo23
08-09-2007, 10:50 AM
$110 for a pcv vavle, thats kinda alot(I realize that its not just a pcv but still). Plus one of the main things is Im dont have room on my magnus to put a vacuum source. thats a main reaon I dont want to hook up the PCV. I dont even have enough room for my FPR to get vacuum.
Super Bleeder!!
08-09-2007, 12:47 PM
Take out the PCV valve, its not creating any crankcase vacuum with an open crankcase breather (nipple/vent on left side of the valve cover when you standing in front of the car facing the engine).
That crankcase breather port isnt suppossed to be open to atmosphere. From the factory that port is routed into the piping in front of the turbo which assures a constant vacuum.
Speedfreak
08-09-2007, 03:20 PM
This thread topic is something I've been wondering about for a while. From the looks of it, the Krank vent seems like a good solution?
http://www.et-performance.com/turbo.html
I am not that read up on this subject, but know it's a problem with higher hp cars and for longevity. I want a solution!
Kracka
08-09-2007, 03:29 PM
That crankcase breather port isnt suppossed to be open to atmosphere. From the factory that port is routed into the piping in front of the turbo which assures a constant vacuum.
The problem is most DSM's are running around with them not hooked up to the intake, and also regular PCV valves leak boost through into the crankcase.
$110 for these things isn't exactly cheap, but at the same time they are serving a lot of functions. For the dip stick popping out its an actual solution, not just a patch like zip ties or springs to hold it in. I am glad I bought mine, I plan to get them for any car that I modify and consider to be my "good car".
Kracka
08-09-2007, 03:31 PM
From the looks of it, the Krank vent seems like a good solution?
They are hugely popular in the S2k-world for both N/A and FI cars.
blageo23
08-09-2007, 11:30 PM
Im sorry I didnt get a chance to read up on the krank vent but do you need hoses off of them or what? how do they hook up?
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