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breathers or catch cans?

Discussion in 'Ford Modular Forum' started by one eyed willy, Apr 5, 2011.

  1. one eyed willy

    Joined:
    Feb 23, 2008
    3 valve, 600-700 HP. debating on 1 of these 2 set ups.

    1) breather tank on each side?

    2) catch can using the inlet of the turbo to draw the crank case pressure?

    opinions
     
    one eyed willy, Apr 5, 2011
    #1

  2. wantabe

    Joined:
    Oct 12, 2010
    safer for a breather tank to be used..
    reason: if the turbo sucks in oil, you can get detination in the cylinder. oils not good in there with high cylinder pressure.. :2thumbs:
     
    wantabe, Apr 5, 2011
    #2

  3. one eyed willy

    Joined:
    Feb 23, 2008
    thats kinda what im thinking, its less plumbing and less shit to keep up with as well.

    im just concerned it may not get rid of the crank pressure??

    i was planning to probably do a #10 hose off each valve cover to seperate breather tanks.
     
    one eyed willy, Apr 5, 2011
    #3

  4. wantabe

    Joined:
    Oct 12, 2010
    ok,
    i run twin -12's on my valve covers..
    wet sump
    -12 turbo drain, -4 supply NO RESTRICTORS
    75psi oil pressure idle, 100+ psi @ 8000rpm
    35+ psi boost
    no crankcase pressure problems,
    no oil leak problems on turbos..

    have a look around or ask, ... there are new hot honing methods for the bore finish surfaces on the blocks.we can get leak down pressure numbers after 70+ passes on the motor, within 1 % of assembley.
    i think alot of the crankcase pressure issues are to do with the bore finish hone pattern, and ring seal issues
     
    wantabe, Apr 5, 2011
    #4

  5. one eyed willy

    Joined:
    Feb 23, 2008
    should i consider more than just a single #10 on each VC?
     
    one eyed willy, Apr 5, 2011
    #5

  6. wantabe

    Joined:
    Oct 12, 2010
    bigger is better in this application
    large area hose, less air speed, less oil vapor being carried out the hose
    needs a flap / guard fitted under the fitting in the valve cover to help too
     
    wantabe, Apr 5, 2011
    #6
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