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

So im about to burn my car down.

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Old Feb 15, 2008 | 10:46 PM
  #1  
96supersport's Avatar
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So im about to burn my car down.

Ok intake was leaking something nasty, so today, i spent all day, pulling it off and cleaning the living crap out of everything, i mean spotless sealing serfaces, everything, done text book. New gaskets, i used "the right stuff" gasket maker for the ends, ran it up a little on the heads to completely seal it.

ok so i crank it up, runs great, no weird sounds, great right?

drive it down the road and i smell burning oil, so i pull over, and look under the car, the entire tranny is covered in motor oil, oil leaking through the bell housing.


Basically oil everywhere.

what did i do wrong?

has this happend to anyone else?
Old Feb 15, 2008 | 11:00 PM
  #2  
GreasyB's Avatar
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Did you wait for the rtv to dry all the way?
Old Feb 15, 2008 | 11:01 PM
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how long did you let it sit before starting it,was silicone dry enough?
is your oil pressure sender leaking?
reach behind the intake and feel the gap where you put the silicone to see if it is oil soaked,can you get it on a lift to look up there?
Old Feb 15, 2008 | 11:07 PM
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You probably didn't get the rear of the intake sealed. I've found Permatex "Ultra Copper" RTV works really well at the front and back of the intake. BTW - you have to let the rtv dry before you go drivin.
Old Feb 15, 2008 | 11:17 PM
  #5  
96supersport's Avatar
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"the right stuff" says you can drive 5 mins after its applied.

even though i didnt start it for like 2 or 3 hours.
Old Feb 15, 2008 | 11:42 PM
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The first thing is to locate where it is coming from.
Old Feb 16, 2008 | 12:11 AM
  #7  
ss.slp.ls1's Avatar
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Maybe damaged the oil sending unit?
Old Feb 16, 2008 | 12:21 AM
  #8  
ulakovic22's Avatar
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When putting the intake down on the block did you lower it as straight down as possible? If not then you might have pushed the RTV off the rail and not got a good seal.
Old Feb 16, 2008 | 08:23 AM
  #9  
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Originally Posted by ricehammer
You probably didn't get the rear of the intake sealed. I've found Permatex "Ultra Copper" RTV works really well at the front and back of the intake. BTW - you have to let the rtv dry before you go drivin.
It also works great for header gaskets... - even if the bolts fall out they usually stay stuck on- thank god...
Old Feb 16, 2008 | 08:53 AM
  #10  
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I never let mine sit before I drive it and dont have a problem with leaks.

I think the key is to lower the manifold straight down onto the motor. I use a cut up wooden pencil as dowels in the end bolt holes to line it up and drop it straight on. I also use the ultra copper sealan. This method works good for me.

But yeah, find out where the leak is coming from. Could be the back of the valve cover? I recently had to replace mine.
Old Feb 16, 2008 | 09:50 AM
  #11  
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so you aren't going to actually set it on fire the oil is just going to catch on fire??? jk.. i would have to go with oil pressure sending unit..
Old Feb 16, 2008 | 10:22 AM
  #12  
96supersport's Avatar
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yea im going to pull it back apart today, it wasnt just a little leak....the was oil everywhere
Old Feb 16, 2008 | 10:58 AM
  #13  
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It takes a pretty high bead to get it to seal correctly. I have seen a few do it twice and still never got it right.
Old Feb 16, 2008 | 05:29 PM
  #14  
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The grey RTV works the best. I have done quite a few of em with that stuff and never had a problem. I use a fairly good amount though. And I always run the rtv up onto the intake gasket about a half an inch.
Old Feb 16, 2008 | 07:49 PM
  #15  
Big Lebowski's Avatar
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From: Cleveland, Ohio
RTV works fine for me. I never once had a leak. I would check the oil pressure sender. Those will leak very fast.
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