Some racers use a threaded plug. I don't know if that would help in
replacing the plugs in the rear of the engine, but I don't think anything
will.
The "freeze plug" will protect the engine block from freezing only if the
nucleation point for the ice crystal (that does the damage) is located
directly under the plug. A very unlikely scenario, especially since any and
all surface irregularities in the water jacket are potential nucleation
sites.
Bill Lawrence
On 10/3/04 6:20 AM, "JJSandSMS@cs.com" <JJSandSMS@cs.com> wrote:
> We cleaning a BJ8 block and have removed the freeze plugs. New ones will be
> installed (cup type). But are there removable expansion type plugs available
> to install at the rear of the engine. I understand that if the rear plugs
> start to leak it is almost impossible to remove and replace them without
> removing
> the motor. Temporary rubber type plugs are available but these are only to
> be used in an emergency. There has to be a removable plug that is more
> permanent. Anyone one know of these or is there a slick way of removing and
> installing a standard type rear plugs without engine removal?
>
> Also any secrets as to installing the cup type plugs so they do not leak?
> What is the best sealant to use? Is the blue form-a-gasket type material a
> good
> application?
>
> Broader question? Are the purpose of the plugs only to protect against
> freezing? We live in a warm climate and it never freezes so are they needed?
> If
> not, is there a different type of plug that can be installed that is more
> permanent? I am not thinking of doing this but are just wondering. Do
> purpose
> built racing motors have freeze plugs? What about Healeys that are/were
> raced?
> What is done with those plugs to prevent coolant leakage? Is the standard
> plug up to the task?
>
> Thanks
>
> Jeff,
> 1964 BJ8
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