â??Freeze Plugsâ?? are not intended to save an engine if frozen. They are a
result of needing to get the casting sand out of the block after the casting
process. They could be a treaded fitting or even brazed in place but the steel
plug is cheap, quick
to install and MAY pop out if the block is ever frozen.
Bob Nogueira
> On Jan 14, 2021, at 12:41 PM, Phil Ethier <pethier7@gmail.com> wrote:
>
> You need to see the part of itself and not just the paperwork.
>
> Has anyone ever actually seen a freeze plug save an engine block?
>
> Sent from my iPhone
>
>> On Jan 14, 2021, at 11:21 AM, Scott Hall <scott.hall.personal@gmail.com>
>> wrote:
>>
>> 
>> This is mostly theory.
>>
>> One of my staff wants to stick a frost heater in his car--it's a Kia with a
>> 3.3L engine (though I don't think that matters for the question).
>>
>> Since he thinks I'm a car guy--which in his head means I know everything
>> about all cars--he's asking for help.
>>
>> He brought in the instructions and the heater itself. The instructions are
>> pretty simple: drain coolant, "remove plug" (quotes mine--it just says
>> "plug", so I'm assuming that's a freeze/expansion plug), screw in heater,
>> refill coolant, etc.
>>
>> The heater to install is threaded. It says to torque it to 30 lb. ft.
>>
>> The plug he's removing probably isn't...I'd think.
>>
>> Obviously without rolling under the car, who knows? But I'm tempted to tell
>> him to not start--the only way I know to remove a freeze plug is to drill a
>> hole in it, then pull it out with something. If there are no threads behind
>> it--and I can't imagine that a press-in freeze plug presses in to a threaded
>> hole--then he's just going to need a new freeze plug to reinstall.
>>
>> So I guess my questions to the list are:
>>
>> 1) anyone ever see a threaded freeze plug? That would seem to defeat the
>> whole purpose of allowing it to pop out.
>>
>> 2) anyone ever see threads behind a freeze plug? Perhaps the plug presses
>> into a smooth port, and there are threads behind it?
>>
>> We called the manufacturer who confirmed that the part number is correct.
>> It's used on several models so they couldn't say for sure other than, "it'll
>> work". I'd hate to see this kid pull out a freeze plug then be screwed.
>>
>> YouTube similarly has nothing relevant.
>>
>> Anybody have any experience with this before I just have him drive over and
>> roll under the car to see what I'm looking at?
>>
>> Thanks.
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