Removing the MGB heater is considered one of the most PITA jobs that MG restorers come across. Recommendations include having lots of band aids, making sure kids aren’t around because of colourful language and have beer, I’m not sure whether the beer is for before the work or after to celebrate, maybe both.

With this in mind I’ve been avoiding dealing with the heater on a regular basis. But, it has to come out now as I prepare to paint the engine compartment. I’ve thought about masking the heater off and then painting but then I have one ugly in need of restoration heater in a nice looking engine compartment. Let’s do it right! Here’s what the ugly MG heater looks like.

Rusty MGB heater box
Rusty MGB heater box

Not very pretty. Hopefully it won’t be as ugly on the inside! This is what the interior looks like, what a rats nest! The wiring really needs to be cleaned up under the dash.

1967 MGB GT heating vents and console
1967 MGB GT heating vents and console

I started on the interior of the MG by removing the center console. Fortunately there isn’t a speaker or stereo stuffed in there so no wiring to deal with. The console is held in place with 2 screws on each side so I took these out and while the console was loose it wouldn’t come out. Turns out there were a few bolts under the carpet in front of the console and once these were removed it came out easily.

Removing bolts in front of the MG center console
Removing bolts in front of the MG center console

This is what we have now. Lots of space to work. At this point I’m thinking that the center console could possibly have stayed in but we certainly have better visibility now and while I have the console out I can clean up some other messes.

MGB center console support
MGB center console support

Removing the old venting proved to be easy enough although the right one fell apart. These are easy to replace so Moss Motors will likely make some more money in the near future. There might even be more modern materials available, lots has changed in the past 50 years.

1967 MGB GT heating vents
a 1967 MGB GT heating vents

The rubber elbows came out easily once I applied a little heat from a blow drier to them. Fifty year old rubber can be somewhat stiff but at least the elbows are in good shape and can definitely be reused.

MGB heater box rubber elbow
MGB heater box rubber elbow

Once the rubber elbows are removed it’s easy to reach in with long nose pliers and remove the connecting pipes. At this point the heater box is free except for the control cable.

MGB heater vents with elbows removed
MGB heater vents with elbows removed

There are two ways to remove the heater control cable. The first is to reach under the dash with a small socket or nut remover and undo the cables. This is a royal PITA as the nuts are above the control unit and not easily accessible. The second method involves removing the heater control knob and then removing the control from the dash. No blood lost!

To remove the knob you need to depress a spring through a hole (I used a drill bit to press in) and pull the knob off the shaft. It took a little prying but worked well. Once the control is removed from behind the dash it’s easy to remove the cable.

1967 MGB heater control knob
1967 MGB heater control knob
1967 MGB heater control knob release hole
1967 MGB heater control knob release hole
Have a beer of your choice in a nice location, you deserve it!
Have a beer of your choice in a nice location, you deserve it!

At this point it’s time to have a beer before heading into the engine compartment for more fun. Next installment… removing the MGB GT heater box from the engine compartment. Stay tuned!

Removing the MGB GT heater box PART 2

Related Images:

3 COMMENTS

    • You are not being a loyal MG owner unless you are drinking Old Speckled Hen. I always keep some in my garage, and can renew my supply as needed since there is a liquor store nearby that has it in stock. I do wish it tasted better than California IPAs, but just to satisfy the MG gods, I find it necessary to drink OSH following a successful car repair, or an unsuccessful car repair.

      • I’m not sure if I can get Old Speckled Hen here, will have to look. Maybe a few of my projects would go smoother! Do you have a OSH photo you can post? Might help the MG gods on this project.

LEAVE A REPLY

Please enter your comment!
Please enter your name here

This site uses Akismet to reduce spam. Learn how your comment data is processed.