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FREEZE PLUGS IN TO-30?

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-MIKE IN FLA.

05-14-2003 11:09:42




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HI, HAS ANYBODY THOUGHT ABOUT HAVING A MACHINE SHOP CUT FREEZE PLUGS IN A Z129 BLOCK? DO YOU THINK IT IS POSSIBLE? JUST A QUESTION TO THINK OVER.




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Dan S (NY)

05-14-2003 17:03:43




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 Re: FREEZE PLUGS IN TO-30? in reply to -MIKE IN FLA., 05-14-2003 11:09:42  
"Freeze Plugs" will not protect an engine from damage if it Freezes. I wonder how they got that name, anyway.



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NCtim

05-14-2003 12:55:32




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 Re: FREEZE PLUGS IN TO-30? in reply to -MIKE IN FLA., 05-14-2003 11:09:42  
The real reason "freeze plugs" are mounted in certain engine blocks is because they have to plug the holes left by casting dies. You can't cast the engine block on certain designs without two or three piece dies that must be removed after casting. Some freeze plugs cover holes needed to facilitate the machining of certain surfaces inside the block, like bearing journals and oil galleys.

Not all engines need these holes, therefore my next question. Why in the world would you want to add something like a hole in your engine? You don't think these things have the potential for enough leaks already?

NCtim

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Fred OH

05-15-2003 11:25:11




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 Re: Re: FREEZE PLUGS IN TO-30? in reply to NCtim, 05-14-2003 12:55:32  
Well, Tim is on the right track...anywhere there is a hollow spot inside of a casting...there has to be a baked sand core inside...so there will not be molten metal there. The top and bottom of a mold are what holds the sand...they are called the cope and drag...if I remember right. there are other things involved including chaplets which keep the sand from collapsing in the mold. The pattern maker's job is a world of reverse...letters and numbers have to be made in reverse...so they'll come out forward on the casting. The molder has to ram up the sand using the pattern in the cope and drag and put in the baked sand cores and such...a very precision job with experience the best teacher. These guys that do this for a living are artists. Small metal parts can be die cast as Tim mentioned, usually aluminum or pot metal. Some of the newer technology high tech companys are doing other metals too. L8R....Fred OH

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