Re: IML: Smoke on Dash equals Heater Coil leak

["Bill Watson" <wwatson5@xxxxxxxxx>]

The heater core is a minature radiator.  There is a frame with connectors
for the hoses that surrounds the core.  With a heater core, it is usually
the centre core that springs a leak and not where the core attaches the
frame.

Just like the radiator, the cooling core can be removed and replaced.  For
all the work involved in removing and reinstalling the heater core, it is
better to get it re-cored instead of having the holes patched.  Besides, if
the core has sprunk one leak (or more) it is more than likely more holes
will appear later.  In your situation this seems to have been the case.

I have had both radiators and heater cores re-cored on various Plymouths,
Valiants, Dodges, and Studebakers I have owned and never had any problems.

Don't bother with new when you can get the old one re-cored, although this
may not hold true for some vehicles with A/C.   Save the new units for those
in the hobby whose radiators and heater cores are beyond repair.  Any
radiator shop can re-core both radiators and heater cores.

And don't use those stop leak products.  Not worth the time and can cost you
more in the end.  Used it once a car I owned to stop a radiator leak.  It
did, for a while, but it also gummed up my heater core.   Had to re-core
both the radiator and the heater core.

Bill
Vancouver, BC



----- Original Message ----- 
From: "Jerry hesch" <jerryhesch@xxxxxxx>
To: <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Friday, December 10, 2004 10:41 AM
Subject: Re: IML: Smoke on Dash equals Heater Coil leak


> To Dick and list,
> dick when you speak of rebuilding a heater core I think you imply that the
> core itself is replaced although soldereed onto the housing????, as
opposed
> to soldered to repair the leak?  I had 2 bad experiences with "repair" of
> core and of radiator and have never done anything but replaced with
> newsince, though I am aware that "new" for some of these old gems is near
> impossible.    Please comment.
> Regards
> JH
> ----- Original Message ----- 
> From: "Dick Benjamin" <dickb@xxxxxxxxx>
> To: <mailing-list@xxxxxxxxxxxxxxxx>
> Sent: Friday, December 10, 2004 10:13 AM
> Subject: RE: IML: Smoke on Dash equals Heater Coil leak
>
>
> > You need to follow the instructions in your FSM to get the old heater
core
> > out for inspection.  You should be able to see signs of water leakage in
> > the
> > housing after you remove the core.  If you don't see leakage evidence
> > there,
> > take a careful look at everything else hooked to your cooling system,
> > especially the heater control valve - your leak may be there.
> >
> > Take the core to your local radiator shop for a pressure test.  If it
> > fails,
> > let them fix it.
> >
> > There is an outfit selling heater cores for old MOPARs on eBay - I
haven't
> > dealt with them because they couldn't help on the special core for the
ATC
> > cars, but they did have one for a standard 67 heater, and may have one
for
> > yours too.  The price might be better than having yours repaired, or it
> > might not - you'll have to do the research.
> >
> > I recently had the core on my project 67 tested, and it failed.  Then I
> > found out that the cars with ATC have a different core, one which is no
> > longer available without adapting another, much larger core, so the cost
> > of
> > rebuilding it was quite high, but it can be done.
> >
> > Dick Benjamin
> >
>
>
>



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