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Old 01-20-2011, 05:16 PM
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Edelbrock intake water seepage

I just got this motor running and after it runs about 15-20 min the tapped hole in front of the water neck is full of water(antifreeze) it doesn't really flow it just stays at that level. I believe it's one of the mounting holes for the alternator (SBC) the hole is 3/8 threaded and about 1-1/4" deep. I was thinking to get a bolt about that length and coat it with permatex and use a sealing washer. Good idea? Any suggestions? I'm not using the hole for anything I have a low mount alternator. Thanks for any input. Eric

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Old 01-20-2011, 05:42 PM
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That`s what I would do. However when I had this issue it was the water neck itself seeping.
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Old 01-20-2011, 05:48 PM
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That's what I thought it was as well but if you have the patience you can watch the level rise in the hole and and there is nothing around the neck or on the hose,pretty strange, It may have been a casting flaw that closes up as the intake heats up. I've checked everything else, odd though it doesn't seem to overflow and then by morning the hole is dry. Thanks for the thought.
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Old 01-20-2011, 07:41 PM
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If that water neck is a chrome plated piece, I suggest that you pull it off, scuff that plating with some 220 sandpaper then reinstall with some sealant - I usually use plain ol' contact cement or Edelbrock's Gaskacinch (which is glorified contact cement)

Dave W
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Old 01-20-2011, 08:02 PM
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Maybe the intake is cracked and allows coolant to get to the hole, then as the engine heats up the crack seals up. If you're going to put a bolt in there, make sure it's not going to bottom out in the hole and don't tighten it too tight. If either one of these happen it can cause it too crack more if it is a crack causing the problem.
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