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RE: MGB Heater Removal

To: "''" <>
Subject: RE: MGB Heater Removal
From: "Jason F. Dutt" <>
Date: Mon, 9 Dec 1996 16:52:53 -0500
        As a matter of fact, I just did it, due to a leaky heater core.    I'm =
almost ready to put it back in, after cleaning and painting all the =
parts. =20
        Removal is not that complicated, but it can be physically difficult (as 
a matter of fact, it was kindof a bear), as the crazy thing is usually =
either glued or gooked in place.  There are only 2 hoses that connect to =
it, and they come away from the box naturally, and stay mounted in the =
car's body.  Watch out for brake lines, as well as the windscreen washer =
hose, as they pass over the top of the flange of the box that connects =
to the body of the car.
        I found it best to remove the fan motor before tearing out the box, =
just to keep from messing up the wires, or worse, getting shocked.
        Just out of curiosity, what's wrong with your heater?  Does it leak?  =
Does it just not generate heat?  If it leaks, you obviously need to =
repair/replace (I opted for replace, as it's not worth doing the job =
again!).  If it just doesn't get hot, it's probably just clogged.  This =
can be rectified simply by disconnecting the two hoses from the engine, =
and flushing it both ways with a hose.  If that doesn't do it, you'll =
probably have to pull it out...
        If you're doing the cooling system now, I'd definitely make sure the =
heater core is in good order.  If it's clogged up with gunk, it'll send =
a bunch of it into the rest of your cooling system, and...well, you get =
the picture.  On the other hand, you could just take it out of the loop =
by connecting a single hose to the water control valve and...well, the =
other place the heater hooks up to.  I did this this summer when I =
realized the heater was leaking onto my feet!

Gook luck!


Sent:   Monday, December 09, 1996 1:57 PM
Subject:        MGB Heater Removal

     Hello all:
     I'm in the process of overhauling the cooling system on my 1970 =
MGB. =20
     Last night I found myself staring at the heater box up on the=20
     firewall.  It's never worked very well, but I don't tend to use it=20
     here in Oregon as it doesn't get very cold.  Nonetheless, it does =
     like the perfect time to fix it since the cooling system is already =

     My Haynes manual makes the heater removal sound straightforward, =
but I=20
     wondered if anyone has removed one lately?  How difficult is it to=20
     disconnect all those heater hoses and such behind the dash?  Any =
     or tricks?
     Thanks in advance for the help!
     Michael Lytton

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