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TR2/3/3A Freeze Out Plug...TR3

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martx-5

martx-5

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I just got a call from my buddy who just finished a frame-off resto on his TR3B last week. He was out driving today, and the freeze out plug at the back of the head fell out. He was close to home, so he got it back OK, but needs some advice on putting in a new one. He can get the plug locally, but is there any way to get a new one seated in there without pulling the head??
 
That freeze plug has to be hit home with a hammer so there is really no way to do that with the head on so.. It's off with her head!

Good luck, Tinkerman
 
This happened to me long ago. Didn't paeticluarly want to pull the head just then so I found a rubber freeze plug at the local auto parts store.

It was sort of a fat rubber plug sandwiched between a couple of washers with a bolt thru the middle and a fixed nut on the inner washer. You just put it in the hole (maybe use some Hylomar or aviation sealer around the edge) then tightening the nut squeezes the plug, making it fatter until it is tightly filling the hole.

Drove it like that more than 20 years until I had the head off for valve work.
 
In Canada (and I assume the colder parts of the US) cars come with heater elements called "Block Heaters" that are installed in the engine block and heat the water and anrtifreze jackets and channels of all of our vehicles. One of these units is installed in one of the frost plug (freeze plug to you) locations and will remain water tight for years. You can buy a block heater for well under $35.00 You should easily be able to install it with a wrench or screwdriver, no hammering. Slide the bale thru the offending hole and tighten up with the exterior screw or nut . Easy!
with qudos to WIKI
https://en.wikipedia.org/wiki/Block_heater
and others
https://z.about.com/d/autorepair/1/0/3/W/block_heater.gif
Do not confuse this item with an in line heater which is cut into an existing rubber heater hose
 
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