Condensation build up under valve covers??!
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Condensation build up under valve covers??!

  1. #1
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    Default Condensation build up under valve covers??!

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    When I ran on the water yesterday evening. ( for 3 hrs . Water temp of 140 ish ) It was chilly and I did not have my engine hatch back on the boat . I now have quite a bit on milky sludge built up on the tall aluminum valve covers. Is condensation normal like this??? I just had valve cover breathers pushed in and was not using a pcv valve on both sides. My oil level did not rise and no water on dip stick. The condensation did build up enough to run down the return holes in the heads and rest on the lifter valley. After mixing with oil, milky oil would come up the push rods .
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  3. #2
    Senior Member Untamed 777's Avatar
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    Default Big Block Chevy

    Could be your head bolts/studs leaking. We had the same problem and it was the studs leaking, need to remove and use silicone sealant and install the heads and torque immediately after
    Team Untamed 777 T/E
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    I'm hoping that's what it is. I put a lot of aviation sealant on the threads but I was having issues with that not sealing before. Do you recommend another type of sealant ?
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    Quote Originally Posted by Untamed 777 View Post
    Could be your head bolts/studs leaking. We had the same problem and it was the studs leaking, need to remove and use silicone sealant and install the heads and torque immediately after
    Sorry. Miss read your quote. I had issues with some of the rocker studs that go into water jackets not sealing. When we put the heads on, we made sure that each head bolt hole did not go into water jackets in the block.
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    Senior Member Untamed 777's Avatar
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    Quote Originally Posted by Texas 272 View Post
    I'm hoping that's what it is. I put a lot of aviation sealant on the threads but I was having issues with that not sealing before. Do you recommend another type of sealant ?
    Tried all types of sealants, silicone works and is what ARP recommends
    Team Untamed 777 T/E
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    Quote Originally Posted by Untamed 777 View Post
    Tried all types of sealants, silicone works and is what ARP recommends
    Red high heat permatex?
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    I've had the motor on water test at 35 psi and it haven't dropped. I remember going into reverse and hearing the motor sound bad so I put it in forward and gave it gas. I don't have much of an angle from the risers. My tips do not have internal flappers and the ones currently on the boat are these. I think this could very well be the issue! What's yall thoughts??

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    If your just putting g air pressure on the water system while boat is sitting on trailer with engine not running that's not going to give you a true test. I have had a motor hold air pressure just fine but when the motor ran it would drip water from the back of the heads at the gasket. the vibration would cause it to drip. copper gaskets were a nightmare to get to seal. finial a guy told me to get rid of the copper gaskets and the head studs and use good head bolts and never had a water problem again. and yes you could very well be drawing water back through your exhaust
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    Old thread but only 140 degrees and two pcv valves ?
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  13. #11
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    Quote Originally Posted by Richard Till View Post
    Old thread but only 140 degrees and two pcv valves ?
    That's what i was thinking. As long as the motor is not filling up with milk i would be all about getting some heat in the oil.
    "A liberal paradise would be a place where everybody has
    guaranteed employment, free comprehensive healthcare, free
    education, free food, free housing, free clothing, free
    utilities, and only law enforcement has guns. And believe it or
    not, such a place does, indeed, exist: It's called prison."

    Sheriff Joe Arpaio
    Maricopa County Sheriff's Office
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