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Thread: antifreeze on intake manifold
          
   
   

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  1. #1
    chevy 37's Avatar
    chevy 37 is offline CHR Member Visit my Photo Gallery
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    antifreeze on intake manifold

     



    Last year I put a new Edelbrock performer intake manifold with a 600 cfm Carb on my 37 chevy truck with a 305 engine bored .060 over. I have been having problems trying to find a leak that leaving antifreeze on my intake manifold. I re-torqued the bolts thinking they had come loose. Still leaks. I put new radiator hose on. still leaks. Put new. Put new thermostat housing on but it still leaks. What happens is that after I drive it it will sit for hours and nothing happens. I've watched it for 8 hrs. and couldn't see a leak. The next morning the manifold would have about an ounce of antifreeze sitting on the front of the intake. I've thought maybe the water pump was shot but I can't find any leakage there. Any ideas? Bart
    Keep smiling, it only hurts when you think it does!

  2. #2
    vara4's Avatar
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    Chevy 37; I'm not sure how cold it is where you are but it sounds like it's trying to freeze or expand, I mean you said it's sitting for 8 hours and no leaks. You might have a bad intake manifold Gasget letting anti freeze up thru a bolt hole and puddling on top of the intake. Do you have a heater hose that's in that area? I would look for pin holes first. If it's none of these, the intake could have a hair line crack in it. Let use know what you find. the last guy found it was comming up thru a bolt hole from a bad intake gasget that had rotted in between a water port and the bolt hole.


    Vegas

  3. #3
    chevy 37's Avatar
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    Thanks Guys for the info. When it warms up here I'll take my truck out of storage and try what you stated. I don/t think its the manifold or gasket but maybe the new thermostat housing I put on.
    Keep smiling, it only hurts when you think it does!

  4. #4
    junkyardjeff's Avatar
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    Did you put one of those cheap chrome thermostat housings on it,if you did you will need to sand the chrome off where it comes in contact with the manifold. I read in a magazine somewhere the chrome wont allow it to seal properly. Jeff

  5. #5
    vara4's Avatar
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    Chevy37; Was it leaking before you changed it ,or just after.That should tell the story with that. Let us know what you find, thanks.

    Vegas

  6. #6
    chevy 37's Avatar
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    Vegas It started leaking after I put the manifold on. After 1 week I retorked the bolts but it still leaked
    Keep smiling, it only hurts when you think it does!

  7. #7
    vara4's Avatar
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    Chevy 37; I take it that It was used. It's probably like Streets said. You need to have it checked and maybe they can fix it? Shave it or some thing. Then use a thicker intake gasget on it. Please let me know what you find. I'm curious now.


    Vegas

  8. #8
    joe gaddy is offline CHR Member Visit my Photo Gallery
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    water leak

     



    If I were in your shoes I would get a cooling system pressure tester[ wonder if this is one of the tools that "Auto Zone" loans? I would put the system under pressure cold and watch it. I bet you find out exactly whats happing. Joe
    Joe

  9. #9
    vara4's Avatar
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    HE!HE!HE! That's one heck of a BIG ECHOOOOOOOOOOO!!!!!!


    Vegas
    Last edited by vara4; 02-11-2004 at 04:10 PM.

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