to pcv or not...?
+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 14 of 18

Thread:
to pcv or not...?

  1. #1
    Member
    Join Date
    Sep 2009
    Location
    Red Mountain, Az
    Posts
    95

    Default to pcv or not...?

    I am thinking about just doing two breathers on my new 600 horse BBC and eliminating pcv. Anyone doing this in a closed engine compartment. Am I going to have oil mist everywhere? Let me know what your running and if it works. My cam is a .650 lift with a 850 holley dp. Big rect. Heads and powerflow exhaust.

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    tintingsandiego krusn56's Avatar
    Join Date
    Oct 2008
    Location
    San Diego
    Posts
    1,063

    Default

    I would consider having both up front then ran to a puke tank....that should keep it from spittin. I have a closed with a pcv on the rear side and a reg breather on the front....I replace it at least 1-2 times a season. Watch out for the fumes...I just saw this pic...
    Last edited by krusn56; 04-21-2011 at 02:59 PM.
    Made In The Shade

    Custom Window Tinting

  4. #3
    Senior Member YumaJet's Avatar
    Join Date
    Sep 2008
    Location
    Yuma, Az
    Posts
    829

    Default

    you'll end up with a little oil, but being it is a closed engine compartment, it won't go everywhere. you can get a puke tank or taller breathers to help with the problem.
    boatless....

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Senior Member ICECREAMAN's Avatar
    Join Date
    May 2009
    Posts
    2,426

    Default

    I did a single PCV only system on a stock bbc. It was blowing oil out the dipstick tube. Gen 6 motor designed for a closed crancase system originally. Added breather in the valve cover and no more blowing oil. So I guess what I'm saying is even a stock engine needs to have the cranck case breath some way. If you eliminate PCV you better have decent VC breathers.

  7. #5
    Senior Member rogerroost's Avatar
    Join Date
    Oct 2009
    Location
    Maple Ridge B.C. Canada
    Posts
    536

    Default

    another option

    just sayin

  8. #6
    BTC cardcarrying member SuperSoaker's Avatar
    Join Date
    Dec 2007
    Location
    MD
    Posts
    1,942

    Default

    no pcv no problem no mess 540 bbc




  9. #7
    Senior Member NiceGuyEddie's Avatar
    Join Date
    Dec 2007
    Location
    Anaheim Hills
    Posts
    5,838

    Default

    Quote Originally Posted by jayman View Post
    I am thinking about just doing two breathers on my new 600 horse BBC and eliminating pcv. Anyone doing this in a closed engine compartment. Am I going to have oil mist everywhere? Let me know what your running and if it works. My cam is a .650 lift with a 850 holley dp. Big rect. Heads and powerflow exhaust.



    600Hp in that beast? haha... I'm glad to see your having fun with the boat!

    Dennis

  10. #8
    What the Hell is That? 72Hondo's Avatar
    Join Date
    Apr 2008
    Location
    Denton, TX
    Posts
    1,633

    Default

    Quote Originally Posted by rIVERtRASH View Post
    600Hp in that beast? haha... I'm glad to see your having fun with the boat!

    Dennis
    You have been MIA for a while!

    Welcome back
    Quote Originally Posted by Kyle View Post
    Log off and go float, hang in the party coves, Show and shine on the trailer, fill up the boat, wax it, v-drive, jet, outdrive, and if you got a canoe and your reading this, you sir, need to phucking upgrade.

  11. #9
    Senior Member jet460's Avatar
    Join Date
    Mar 2010
    Location
    Modesto, Ca.
    Posts
    681

    Default

    Why would anyone not run some sort of PCV?

    Without PCV your oil would be contaminated with gas in a very short time.
    Gas doesn't make a very good lubricant.

    $.02
    100 years from now, none of this will matter.

  12. #10
    Boat Nut sleekcrafter's Avatar
    Join Date
    Dec 2007
    Location
    South Elgin, Il.
    Posts
    5,131

    Default

    No PCV for me either, just a set of breathers plumbed up to the carb pan.

    Click image for larger version. 

Name:	100_0186.jpg 
Views:	228 
Size:	94.1 KB 
ID:	113490
    Upper Midwest Power Boat Association
    DRAG BOAT RACING UMPBA #926


  13. #11
    The Man cordog009's Avatar
    Join Date
    Jan 2008
    Location
    East Texas
    Posts
    1,788

    Default

    PCV works for what it's intended for. I don't really care about having oil film being put into the intake manifold. A guy could always get one of those little air/oil separators that you use on air compressors to remove the oil out of the air. We had to do that on several LSx motors because they were sucking oil mist from the valve covers into the TB. That fixed the problem, and the pcv still worked like planned. You'd be surprised how much oil gets past those pcv valves and goes straight into the manifold or carb.


    1984 Youngblood TX-19 SOLD

  14. #12
    Senior Member H20MOFO's Avatar
    Join Date
    Dec 2007
    Posts
    4,288

    Default

    Quote Originally Posted by SuperSoaker View Post
    no pcv no problem no mess 540 bbc



    I have never had mine drip a drop either. The pan evac to the headers is a good idea too. I would like to get around to that one day.lol
    Another Hot Boat refugee

  15. #13
    Senior Member ICECREAMAN's Avatar
    Join Date
    May 2009
    Posts
    2,426

    Default

    Not splitting hairs but breathers in the valve covers or evac tubes to the headers are all types of crank case venting. Emission reduction was the reason to use a PCV valve and recycle the hydro carbons produced by heating the engine oil. In a performance application a good set of breathers usually does just fine. Point is to let the crank case vent and not build pressure. Now if you want to go all out, put a vacuum pump set up on your engine for that last little bit of HP.

  16. #14
    Member
    Join Date
    Feb 2008
    Posts
    93

    Default If you run open breathers and PCV the PCV doesn't work

    PCV is designed to vacuum the crankcase into the intake manifold - smog stuff. By adding a breather vent you eliminate the possibility of vacuum. Waste of time you by passed the design

+ Reply to Thread
Page 1 of 2 1 2 LastLast

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in


Tags for this Thread

Digg This Thread

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •  
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95