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Technical Oil spray on pass side..SBC

Discussion in 'The Hokey Ass Message Board' started by Shamedevil, Oct 4, 2016.

  1. Shamedevil
    Joined: Dec 16, 2008
    Posts: 272

    Shamedevil
    Member

    Need some advice: Changed fuel pump gasket plate,used a one piece Felpro oil pan gasket (but used a little RTV to hold it in place) also the 2 threaded holes in front of block are sealed with bolts & sealer, balancer is dry. Is this engine building up pressure? Oil is spraying on motor mount,frame,burning on header,etc... I am using older M/T valve covers,pcv on driver side,2 breathers on opposite side..........this problem is getting old already,tired of working on it......I went as far as buying another oil pan and Felpro one piece to put back on it,thought my pan may be warped. Some say I need baffles in the covers but I thought 2 breathers would be enough. Please help!!!!!!!!!!
     
  2. squirrel
    Joined: Sep 23, 2004
    Posts: 60,040

    squirrel
    Member

    If you have two breathers that do not have baffles in the valve cover, then it's likely that it's blowing oil out of them. Quick check...swap the valve covers side to side, see if the problem follows the breathers.
     
    lothiandon1940 likes this.
  3. F&J
    Joined: Apr 5, 2007
    Posts: 13,291

    F&J
    Member

    Also:

    I had a messy leak only at road RPMs, that was found to be the timing cover about 3 inches up from pan. There is a lot of oil slinging in there.

    Clean everything with soap/powerwash if you have. Get it all dry from that shiny oil slime, then take it for a buzz.

    .
     
    Tim_with_a_T likes this.
  4. Jalopy Joker
    Joined: Sep 3, 2006
    Posts: 34,106

    Jalopy Joker
    Member

  5. malibumonte78
    Joined: Nov 17, 2011
    Posts: 302

    malibumonte78
    Member

    The problem is the M/T valve covers. The holes are right on top of the rockers instead of in between two pairs of rockers. The rockers basically sling the oil right into the breathers and PCV and there is no room to install a baffle. This problem is even worse if you are using roller rockers. I ran some of these a while back and after discovering the issue and swapping on a different set of valve covers problem solved.
     
  6. Shamedevil
    Joined: Dec 16, 2008
    Posts: 272

    Shamedevil
    Member

    I had stock valve covers on it when I bought the car.........never had that problem. Sounds like an ez fix but these M/T valve covers have been around for decades............I'm sure this problem has surfaced before!
     
  7. squirrel
    Joined: Sep 23, 2004
    Posts: 60,040

    squirrel
    Member

    I fought a similar problem on this thing for a little while, even with stock covers it was blowing oil out the breather cap. I ended up putting a header evac system on this side of the engine, and left the PCV on the other side. Fixed the problem. btw these stock valve covers have also been around for decades, and are a big part of the "look" of this car.

    [​IMG]
     
    mad mikey, kidcampbell71 and Babyearl like this.
  8. Shamedevil
    Joined: Dec 16, 2008
    Posts: 272

    Shamedevil
    Member

    Nice work............
     
  9. saltflats
    Joined: Aug 14, 2007
    Posts: 13,639

    saltflats
    Member
    from Missouri

    Is it coming out of the vent hole of the fuel pump?
     
    gas pumper likes this.
  10. It's coming out low?
    Dipstick is what side?

    Is there a plug in the p***enger side of the block's dipstick hole?
     
  11. malibumonte78
    Joined: Nov 17, 2011
    Posts: 302

    malibumonte78
    Member

    More like "These M/T valve covers have been causing problems for decades" Pull the breathers out with the engine running and watch it sling oil out at IDLE. There is no way a breather can take that kind of abuse, that is why good covers have baffles which these have no room for. I know we like to think of Mickey's stuff as good and vintage stuff a great, but unfortunately are junk no matter how good they look. They would be fine if you had a set that the bosses weren't drilled on an earlier engine that had the pcv in the road draft hole and breather in the fill tube.
     
  12. 19Eddy30
    Joined: Mar 27, 2011
    Posts: 4,046

    19Eddy30
    Member
    from VA

    Do a cylinder leak down test , ( just to see)
    All so I have built a longer baffle in valve cover to prevent this, ( oil spray @ breather 's )
    What Brand / style valve cover breathers ,
    All so I have seen oil lay on top of valve cover gasket ( to big on in side )
    Leak out ,
    Especially on the adapter for the center bolt valve cover, to traditional
    Valve covers, on the mill, I milled out Chanel's along the bottom of adaptors
    Inside with drain hole to fix this problem
     
    Last edited: Oct 4, 2016
  13. Shamedevil
    Joined: Dec 16, 2008
    Posts: 272

    Shamedevil
    Member

    So maybe I should replace the valve covers? Put the stock ones back on.....hopefully these problems will go away!
     
    Chavezk21 likes this.
  14. 19Eddy30
    Joined: Mar 27, 2011
    Posts: 4,046

    19Eddy30
    Member
    from VA

    Yes,
    I would ,
    Diagnostic ,trying different things !!
    Hot Rodding takes time to work things out ,
     
  15. landseaandair
    Joined: Feb 23, 2009
    Posts: 4,485

    landseaandair
    Member
    from phoenix

    X2.
     
  16. Shamedevil
    Joined: Dec 16, 2008
    Posts: 272

    Shamedevil
    Member

    No..........put a new pump on it to satisfy myself,old one still good.
     
  17. squirrel
    Joined: Sep 23, 2004
    Posts: 60,040

    squirrel
    Member

    Let us know when you finally replace the valve covers, if it fixes the oil issue or not.
     
  18. LONG
    Joined: Aug 20, 2011
    Posts: 292

    LONG
    Member

    its been a long time simce I've looked at a sbc. don't some small blocks have a threaded port to install a bolt to hold the pump push rod in place for fp replacement? could be leaking from there?
     
  19. squirrel
    Joined: Sep 23, 2004
    Posts: 60,040

    squirrel
    Member

    I think he answered that question already.
     
  20. Shamedevil
    Joined: Dec 16, 2008
    Posts: 272

    Shamedevil
    Member

    I ordered new stock covers for my Vette last night........I'll be selling the M/T covers in a few weeks............I'm really pissed I can't use them, they really are in nice shape and still have the reverse Chevy emblem that was never knocked out!
     
  21. 19Eddy30
    Joined: Mar 27, 2011
    Posts: 4,046

    19Eddy30
    Member
    from VA

    Why sell , sove the Prolbem first, then go from there ,
    I have used that Valve cover with no Prolblems,
    Post pics !!!
    Racing /Hot Rod / street Rod , it's not always a bolt on and DONE & GO!!!
    I have to change my Valve springs every 4 to 6 mounths, on my Hot Rod
     
    31Vicky with a hemi likes this.
  22. Shamedevil
    Joined: Dec 16, 2008
    Posts: 272

    Shamedevil
    Member

    Bought a new pan, fel-pro 1 piece and taking all precautions puttin' this dog on, sure wish the motor was out........easier to put the pan on! THEN I'm puttin' on the stock valve covers...........it HAS TO WORK!
     
  23. chevy57dude
    Joined: Dec 10, 2007
    Posts: 9,718

    chevy57dude
    ALLIANCE MEMBER

    Hope it works for you.
    SBC in a truck I just bought. Oil spray coming from same area. I thought it was the timing cover seal for the balancer. Nope! The timing chain is so loose, it has been wearing against the cover. Worn a hole right thru it! Simple job, but a pain in the *** to do. Damn those nylon cam gears...
     
    mad mikey likes this.
  24. Shamedevil
    Joined: Dec 16, 2008
    Posts: 272

    Shamedevil
    Member

    I hate working without a lift!
     
  25. chevy57dude
    Joined: Dec 10, 2007
    Posts: 9,718

    chevy57dude
    ALLIANCE MEMBER

    Vette, change pan, engine in the car, yeah good times. At least it isn't snowing! Use some good ramps at least.
     
  26. Idk, maybe the word spray is not the word you wanted to use.
    I've never seen oil spray out of a valve cover, nor have I ever seen a valve cover leak or spray on a motor mount. The leak could be traced back above the engine mount trickling up/ down the block and it would be zero wonderment where the leak is coming from.
    The fan can blow oil, but the leak is then traced back in a pattern that's Up and forward since the drips would go down and back - again zero wonderment where the leak is coming from. Just because it hidden from plain site or doesn't bit bite you on the *** doesn't mean it can't be found.
     
  27. saltflats
    Joined: Aug 14, 2007
    Posts: 13,639

    saltflats
    Member
    from Missouri

    If it is the pan on the vet in your avatar that has to be one of easiest to do in a car.
     
  28. Dan Timberlake
    Joined: Apr 28, 2010
    Posts: 1,582

    Dan Timberlake
    Member

    ================

    I'd wash things off and get a better look at where the leak(s) are.

    Those fluorescent leak test kits can be pretty helpful. I'd plan on changing the oil shortly thereafter.
     
  29. mad mikey
    Joined: Dec 22, 2013
    Posts: 9,470

    mad mikey
    Member

    To diagnose a oil leak, and not guess, you must clean engine off. Then run the engine closely watching and looking for the source of the leak. Find out exactly where it is coming from first.
     
    chevy57dude likes this.
  30. 19Eddy30
    Joined: Mar 27, 2011
    Posts: 4,046

    19Eddy30
    Member
    from VA

    Is it a BB or SB?
     

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