LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

oil leaking between head and block

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Old Apr 23, 2010 | 12:04 AM
  #1  
skipjobe's Avatar
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oil leaking between head and block

I have a lt1 turbo. I blew the head gaskets and just replaced them, went to the track and they detected coolant. I got the car home and did a pressure test on the cooling system and the head is leaking coolant right next to the front head bolt on cylinder #2 I put dye in the motor and oil is dripping from the same spot. I used felpro 1074 with the flattened copper wire recommended for this motor. I have ordered a new gasket for this side. Any suggestions of what the problem is. This is a 94 Camaro and it is a time consuming project to change a gasket. I used head studs could one of the studs allow oil and water to pass the head? It runs fine and no water in the oil and I am getting a very small drip of water and oil.

Last edited by skipjobe on 20 Apr 2010 21:47; edited 1 time in total
Old Apr 23, 2010 | 06:46 AM
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A lot of people seem to have trouble getting studs to seal. Some people swear by the Ford/Motorcraft TA-29 sealant or other stuff. Others give up and go back to bolts. It just depends on who you talk to.
Old Apr 23, 2010 | 08:36 AM
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The oil has me baffled as you posted several times on this issue " the oil isn't under pressure in the heads" I wonder how the gasket can hold pressure under boost and oil can still run out.
Old Apr 23, 2010 | 12:04 PM
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Originally Posted by skipjobe
The oil has me baffled as you posted several times on this issue " the oil isn't under pressure in the heads" I wonder how the gasket can hold pressure under boost and oil can still run out.
Though oil is not under pressure, I have seen oil migrate along a bolt and seep out between the head and block.
Old Apr 23, 2010 | 01:40 PM
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maybe the oil is getting sucked from the boost and pushed out once it gets to the blown seal. or weak spot in the gasket. I use to run RTV or Liquid teflon on head studs and everyonce and a while no matter what we did it would leak. I bet your pushing over 12psi of boost.
Old Apr 23, 2010 | 05:59 PM
  #6  
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I pulled the head and found that I had managed to fold over the little tab that is supposed to touch the intake. I can't imagine how I managed that. Thanks for the input.
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