Did you replace this one yourself recently? Once they've been in there a
while they don't usually come loose.
I would get a new one -- the old one is probably distorted by now. Don't use
any sealant on the freeze plug -- the whole idea is that the metal-to-metal
contact "locks" it into place. If the hole in the block is particularly
corroded and rough around the edges, I suppose there might be a problem
getting the plug to stay put, because if you remove too much metal cleaning
it up the plug won't fit tight. If there is a small scratch or chink you
could fill it with the hard-setting gasket goo, but the plug itself needs to
be a tight fit.
I saw your other question, about the radiator pressure cap... I don't know
what the spec is for a '72, but it's hard to believe 14 lbs. would be enough
to blow the plug. But the cap could be faulty (becoming effectively an
infinite-lb cap), so I'd replace it, with one of the original rating.
on 1/10/02 9:29 AM, Dan Hackney at dhh2c@cms.mail.virginia.edu wrote:
>
> The middle coolant plug on the dizzy side of the engine had blown out
> of its hole, sending coolant all over my beautiful engine bay, arghh.
>
> Why would this happen? Faulty installation? Can I just clean it up
> and reinstall? What type of sealant should I use?
>
> -Dan H.
> 1972 MGB
>
--
Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires
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