455 water in oil

Discussion in 'Gas Engines' started by 77taylor, Jun 29, 2008.

  1. 77taylor
    Joined: Sep 2007
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    Location: Michigan

    77taylor Junior Member

    Hello, i bought a 77 taylor with a 455 olds, freshly rebuilt with an oversize cam. 100 hrs and its was getting water in the oil, i replaced all the gaskets and no help. I assumed a cracked block. So i purchased a second motor and i now have the very same problem. I have a berkeley jet drive no water pump on the motor. Could it be my water jackets? I connected the water jackets cooling lines together and hooked up the hose. no sign of water out the exhaust? im stumped the guy i bought the motor off of swears up and down theirs no problem with the new motor.
     
  2. mr curious
    Joined: Jul 2008
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    mr curious gunkholer supreme

    cracked head maybe
     
  3. 77taylor
    Joined: Sep 2007
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    Location: Michigan

    77taylor Junior Member

    no i dont think so the motor was just rebuilt, and besides the last motor had the same problem. Can i have that bad of luck?
     
  4. Jango
    Joined: Aug 2005
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    Jango Senior Enthusiast

    Last edited: Jul 5, 2008
  5. 77taylor
    Joined: Sep 2007
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    Location: Michigan

    77taylor Junior Member

    The last time i took it out i gained about half a quart in 30 minutes.
     
  6. Markster
    Joined: May 2009
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    Location: Gainesville, FL

    Markster New Member

    While you probably solved the water in the oil issue by now, I had the same problem. Had the head magnefluxed and was told no cracks. Turned out it was a cracked head. Found the crack by removing the valve covers, taking off the water lines where the hose goes into the riser and then crimping and clamping the water lines so as to stop the water from exiting the engine. Then connected a water hose to the engine (like I was going to run it on land), and with the engine off I turned on the hose. Nice 80 lb or so pressure test. Leak showed up right away, dead center on one of the heads. Would not have seen the crack without the water test.

    Water in the oil also caused a spun bearing earlier.
     
  7. ABBOTTCRAFT
    Joined: Jun 2009
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    Location: Vacaville,Ca.

    ABBOTTCRAFT New Member

    My money's on an "Intake Leak"...It happens alot.. Are you useing the rubber end gaskets supplied in the gasket set... If so, that's the problem...Throw them away & use RTV Silicon on the intake ends & alittle around the water ports..Problem solved..........;)
     
  8. Frosty

    Frosty Previous Member

    Well this is easy,--its probably some bits that were on the old engine and now on the new. Logical my dear watson.
     
  9. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    A larger than factory cam will almost surely make water get back into the exhaust. A crossover pipe from one riser to the other helps.
     
  10. Frosty

    Frosty Previous Member

    But hes getting water in oil!!!

    Water in the cylinders due to reversion would cause a misfire and stop it, would'nt you agree?

    Quote --a quart in 30 minutes.
     
  11. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    The overlap causes suction mainly at lower speeds and reverses the flow at the risers. It is like having a head gasket leak or a cracked head. Also, when the engine stops it sucks water back. The GM8.2 had the same problem even with factory cam. The fix was a pipe between the right and left exhaust.
     
  12. Frosty

    Frosty Previous Member

    I can understand the reversion being helped by a cross over ( common on motorcycles too)

    But hes getting lots into the oil.

    I'lle go for the inlet manifold too.
     
  13. Rangerspeedboat
    Joined: Apr 2009
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    Location: Texas

    Rangerspeedboat Senior Member

    There could also be a seal or a fitting inside the engine leaking oil. This happened to one of our engines, the rebuilder just didnt tighten the fitting.
     
  14. 455Rocket123
    Joined: Dec 2009
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    Location: Sacramento

    455Rocket123 New Member

    Cracked heads Or Intake gaskets The valley pan Set Does Not Come With The Intake gaskets You can Get Them On Summit for 12 Bucks I Went Through This With My 455 10 Qts Of Oil And 3 valley Pans later I Got The Problem:)
     

  15. mreoe4sure
    Joined: Jul 2009
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    Location: trustafarian land

    mreoe4sure who me

    Do you have a presure reducing valve on the berkley pump, Many times these problems water in oil can be traced to a lack of one. The pump will put out around 100 psi and will cause intake gasket, front cover gaskets ( where water pump is removed) to leak. These gaskets are not made for this kind of presure. They are made to withstand around 20 psi, and if there is any surfaces that are not straight it will cause a leak. Hope I have not upset anyone with my 2cents Steve
     
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