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Author Topic:   Freeze plug coming out
posted July 20, 2004 11:39 PM
I had the same thing happen to me last year. Still have no explanation for it. Get one of those rubber freeze plugs from any parts store. Worked for me.

posted July 21, 2004 09:42 AM
sounds like the someone forgot to put a dab
of goo around the edges of the plug prior
to putting it into the block.

posted July 21, 2004 10:17 AM           
I had that happen once too... but it popped out because of the freeze we had that night. I know we put antifreeze in our cars to prevent that from happening... but it never occurred to me that my race motor was running w/o it and it could cause a problem. I drain it now when it gets cold.


posted July 21, 2004 04:34 PM
so Sal you mean the freeze plug did what it was supposed to do. Pop out when the water froze. I have had water pumps crack with out the freeze plug coming out to releave the pressure.

Jason Boivin

posted July 21, 2004 08:57 PM           
yeah... I guess you could say I was sorta lucky the freeze plug did its job... it still cracked the water jacket on the outside of the block though.

my buddy I race with builds swimming pools... he had this epoxy he used to seal up cracked and leaking pools. I used that on the block and it held all season. go figure.


posted July 22, 2004 01:01 PM
When i used to help put together engines for a late model,they took the trouble to drill two holes 180 degrees apart through the freeze plug and into the bock, little holes, smaller than .100". They would then put a piece spring rod in there going across the face of the freeze plug into the two holes. The man who showed me this had been racing since the flathead ford days after WWII. Obviously he'd seen em pop out. I've seen some engines with allen head bolts retaining the freeze plugs.That is much more work to drill and tap the holes, gotta be for a reason.

posted July 23, 2004 03:40 PM
might make sure that you do not have a blown head gasket or a cracked cylnder wall that is allowing the water system to become preasurized when the motor runs.

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